Merge branch '3.0' into feature/TD-11463-3.0

.gitignore

@@ -89,6 +89,7 @@ tests/examples/JDBC/JDBCDemo/.project
 tests/examples/JDBC/JDBCDemo/.settings/
 source/libs/parser/inc/sql.*
 tests/script/tmqResult.txt
+tests/tmqResult.txt
 
 # Emacs
 # -*- mode: gitignore; -*-

example/src/tmq.c

@@ -44,7 +44,7 @@ int32_t init_env() {
 
   pRes = taos_query(pConn, "create stable if not exists st1 (ts timestamp, k int) tags(a int)");
   if (taos_errno(pRes) != 0) {
-    printf("failed to create super table 123_$^), reason:%s\n", taos_errstr(pRes));
+    printf("failed to create super table st1, reason:%s\n", taos_errstr(pRes));
     return -1;
   }
   taos_free_result(pRes);

example/src/tstream.c

@@ -25,7 +25,7 @@ int32_t init_env() {
     return -1;
   }
 
-  TAOS_RES* pRes = taos_query(pConn, "create database if not exists abc1 vgroups 2");
+  TAOS_RES* pRes = taos_query(pConn, "create database if not exists abc1 vgroups 1");
   if (taos_errno(pRes) != 0) {
     printf("error in create db, reason:%s\n", taos_errstr(pRes));
     return -1;

include/client/taos.h

@@ -213,8 +213,10 @@ typedef void(tmq_commit_cb(tmq_t *, tmq_resp_err_t, tmq_topic_vgroup_list_t *, v
 
 DLL_EXPORT tmq_list_t *tmq_list_new();
 DLL_EXPORT int32_t     tmq_list_append(tmq_list_t *, const char *);
+DLL_EXPORT void        tmq_list_destroy(tmq_list_t *);
 
 DLL_EXPORT tmq_t      *tmq_consumer_new(void *conn, tmq_conf_t *conf, char *errstr, int32_t errstrLen);
+DLL_EXPORT tmq_t      *tmq_consumer_new1(tmq_conf_t *conf, char *errstr, int32_t errstrLen);
 DLL_EXPORT void        tmq_message_destroy(tmq_message_t *tmq_message);
 DLL_EXPORT const char *tmq_err2str(tmq_resp_err_t);
 
@@ -244,8 +246,8 @@ enum tmq_conf_res_t {
 typedef enum tmq_conf_res_t tmq_conf_res_t;
 
 DLL_EXPORT tmq_conf_t    *tmq_conf_new();
-DLL_EXPORT void           tmq_conf_destroy(tmq_conf_t *conf);
 DLL_EXPORT tmq_conf_res_t tmq_conf_set(tmq_conf_t *conf, const char *key, const char *value);
+DLL_EXPORT void           tmq_conf_destroy(tmq_conf_t *conf);
 DLL_EXPORT void           tmq_conf_set_offset_commit_cb(tmq_conf_t *conf, tmq_commit_cb *cb);
 
 // temporary used function for demo only
@@ -256,6 +258,7 @@ int32_t tmqGetSkipLogNum(tmq_message_t *tmq_message);
 
 DLL_EXPORT TAOS_ROW tmq_get_row(tmq_message_t *message);
 DLL_EXPORT char    *tmq_get_topic_name(tmq_message_t *message);
+DLL_EXPORT char    *tmq_get_topic_schema(tmq_t *tmq, const char *topic);
 
 /* --------------------TMPORARY INTERFACE FOR TESTING--------------------- */
 DLL_EXPORT TAOS_RES *tmq_create_topic(TAOS *taos, const char *name, const char *sql, int sqlLen);

include/common/tcommon.h

@@ -127,7 +127,7 @@ static FORCE_INLINE int32_t tEncodeSMqPollRsp(void** buf, const SMqPollRsp* pRsp
   tlen += taosEncodeFixedI32(buf, pRsp->skipLogNum);
   tlen += taosEncodeFixedI32(buf, pRsp->numOfTopics);
   if (pRsp->numOfTopics == 0) return tlen;
-  tlen += tEncodeSSchemaWrapper(buf, pRsp->schema);
+  tlen += taosEncodeSSchemaWrapper(buf, pRsp->schema);
   if (pRsp->pBlockData) {
     sz = taosArrayGetSize(pRsp->pBlockData);
   }
@@ -149,7 +149,7 @@ static FORCE_INLINE void* tDecodeSMqPollRsp(void* buf, SMqPollRsp* pRsp) {
   if (pRsp->numOfTopics == 0) return buf;
   pRsp->schema = (SSchemaWrapper*)taosMemoryCalloc(1, sizeof(SSchemaWrapper));
   if (pRsp->schema == NULL) return NULL;
-  buf = tDecodeSSchemaWrapper(buf, pRsp->schema);
+  buf = taosDecodeSSchemaWrapper(buf, pRsp->schema);
   buf = taosDecodeFixedI32(buf, &sz);
   pRsp->pBlockData = taosArrayInit(sz, sizeof(SSDataBlock));
   for (int32_t i = 0; i < sz; i++) {

include/common/tdatablock.h

@@ -138,7 +138,7 @@ SSDataBlock* createOneDataBlock(const SSDataBlock* pDataBlock);
 size_t       blockDataGetCapacityInRow(const SSDataBlock* pBlock, size_t pageSize);
 void*        blockDataDestroy(SSDataBlock* pBlock);
 
-void blockDebugShowData(SArray* dataBlocks);
+void blockDebugShowData(const SArray* dataBlocks);
 
 #ifdef __cplusplus
 }

include/common/tmsg.h

@@ -1125,7 +1125,6 @@ int32_t tDeserializeSSchedulerHbReq(void* buf, int32_t bufLen, SSchedulerHbReq*
 void    tFreeSSchedulerHbReq(SSchedulerHbReq* pReq);
 
 typedef struct {
-  uint64_t       seqId;
   SQueryNodeEpId epId;
   SArray*        taskStatus;  // SArray<STaskStatus>
 } SSchedulerHbRsp;
@@ -1931,7 +1930,7 @@ static FORCE_INLINE int32_t tDecodeSSchema(SCoder* pDecoder, SSchema* pSchema) {
   return 0;
 }
 
-static FORCE_INLINE int32_t tEncodeSSchemaWrapper(void** buf, const SSchemaWrapper* pSW) {
+static FORCE_INLINE int32_t taosEncodeSSchemaWrapper(void** buf, const SSchemaWrapper* pSW) {
   int32_t tlen = 0;
   tlen += taosEncodeFixedU32(buf, pSW->nCols);
   for (int32_t i = 0; i < pSW->nCols; i++) {
@@ -1940,7 +1939,7 @@ static FORCE_INLINE int32_t tEncodeSSchemaWrapper(void** buf, const SSchemaWrapp
   return tlen;
 }
 
-static FORCE_INLINE void* tDecodeSSchemaWrapper(void* buf, SSchemaWrapper* pSW) {
+static FORCE_INLINE void* taosDecodeSSchemaWrapper(void* buf, SSchemaWrapper* pSW) {
   buf = taosDecodeFixedU32(buf, &pSW->nCols);
   pSW->pSchema = (SSchema*)taosMemoryCalloc(pSW->nCols, sizeof(SSchema));
   if (pSW->pSchema == NULL) {
@@ -1953,6 +1952,27 @@ static FORCE_INLINE void* tDecodeSSchemaWrapper(void* buf, SSchemaWrapper* pSW)
   return buf;
 }
 
+static FORCE_INLINE int32_t tEncodeSSchemaWrapper(SCoder* pEncoder, const SSchemaWrapper* pSW) {
+  if (tEncodeU32(pEncoder, pSW->nCols) < 0) return -1;
+  for (int32_t i = 0; i < pSW->nCols; i++) {
+    if (tEncodeSSchema(pEncoder, &pSW->pSchema[i]) < 0) return -1;
+  }
+  return pEncoder->pos;
+}
+
+static FORCE_INLINE int32_t tDecodeSSchemaWrapper(SCoder* pDecoder, SSchemaWrapper* pSW) {
+  if (tDecodeU32(pDecoder, &pSW->nCols) < 0) return -1;
+  void* ptr = taosMemoryRealloc(pSW->pSchema, pSW->nCols * sizeof(SSchema));
+  if (ptr == NULL) {
+    return -1;
+  }
+  pSW->pSchema = (SSchema*)ptr;
+  for (int32_t i = 0; i < pSW->nCols; i++) {
+    if (tDecodeSSchema(pDecoder, &pSW->pSchema[i]) < 0) return -1;
+  }
+  return 0;
+}
+
 typedef struct {
   char    name[TSDB_TABLE_FNAME_LEN];
   char    stb[TSDB_TABLE_FNAME_LEN];

include/common/tmsgcb.h

@@ -28,6 +28,7 @@ typedef struct SMgmtWrapper SMgmtWrapper;
 typedef enum {
   QUERY_QUEUE,
   FETCH_QUEUE,
+  READ_QUEUE,
   WRITE_QUEUE,
   APPLY_QUEUE,
   SYNC_QUEUE,

include/common/tmsgdef.h

@@ -212,6 +212,10 @@ enum {
   TD_DEF_MSG_TYPE(TDMT_SND_TASK_PIPE_EXEC, "snode-task-pipe-exec", SStreamTaskExecReq, SStreamTaskExecRsp)
   TD_DEF_MSG_TYPE(TDMT_SND_TASK_MERGE_EXEC, "snode-task-merge-exec", SStreamTaskExecReq, SStreamTaskExecRsp)
 
+  // Requests handled by SCHEDULER
+  TD_NEW_MSG_SEG(TDMT_SCH_MSG)
+  TD_DEF_MSG_TYPE(TDMT_SCH_LINK_BROKEN, "scheduler-link-broken", NULL, NULL)
+  
 #if defined(TD_MSG_NUMBER_)
   TDMT_MAX
 #endif

include/libs/catalog/catalog.h

@@ -112,7 +112,7 @@ int32_t catalogUpdateDBVgInfo(SCatalog* pCatalog, const char* dbName, uint64_t d
 
 int32_t catalogRemoveDB(SCatalog* pCatalog, const char* dbName, uint64_t dbId);
 
-int32_t catalogRemoveTableMeta(SCatalog* pCtg, SName* pTableName);
+int32_t catalogRemoveTableMeta(SCatalog* pCtg, const SName* pTableName);
 
 int32_t catalogRemoveStbMeta(SCatalog* pCtg, const char* dbFName, uint64_t dbId, const char* stbName, uint64_t suid);
 

include/libs/function/functionMgt.h

@@ -57,18 +57,19 @@ typedef enum EFunctionType {
 
   // math function
   FUNCTION_TYPE_ABS = 1000,
-  FUNCTION_TYPE_ACOS,
-  FUNCTION_TYPE_ASION,
-  FUNCTION_TYPE_ATAN,
-  FUNCTION_TYPE_CEIL,
-  FUNCTION_TYPE_COS,
-  FUNCTION_TYPE_FLOOR,
   FUNCTION_TYPE_LOG,
   FUNCTION_TYPE_POW,
+  FUNCTION_TYPE_SQRT,
+  FUNCTION_TYPE_CEIL,
+  FUNCTION_TYPE_FLOOR,
   FUNCTION_TYPE_ROUND,
+
   FUNCTION_TYPE_SIN,
-  FUNCTION_TYPE_SQRT,
+  FUNCTION_TYPE_COS,
   FUNCTION_TYPE_TAN,
+  FUNCTION_TYPE_ASIN,
+  FUNCTION_TYPE_ACOS,
+  FUNCTION_TYPE_ATAN,
 
   // string function
   FUNCTION_TYPE_CHAR_LENGTH = 1500,

include/libs/nodes/nodes.h

@@ -120,6 +120,7 @@ typedef enum ENodeType {
   QUERY_NODE_LOGIC_PLAN_VNODE_MODIF,
   QUERY_NODE_LOGIC_PLAN_EXCHANGE,
   QUERY_NODE_LOGIC_PLAN_WINDOW,
+  QUERY_NODE_LOGIC_PLAN_SORT,
   QUERY_NODE_LOGIC_SUBPLAN,
   QUERY_NODE_LOGIC_PLAN,
 

include/libs/nodes/plannodes.h

@@ -48,6 +48,7 @@ typedef struct SScanLogicNode {
   uint8_t scanFlag;         // denotes reversed scan of data or not
   STimeWindow scanRange;
   SName tableName;
+  bool showRewrite;
 } SScanLogicNode;
 
 typedef struct SJoinLogicNode {
@@ -65,6 +66,7 @@ typedef struct SAggLogicNode {
 typedef struct SProjectLogicNode {
   SLogicNode node;
   SNodeList* pProjections;
+  char stmtName[TSDB_TABLE_NAME_LEN]; 
 } SProjectLogicNode;
 
 typedef struct SVnodeModifLogicNode {
@@ -96,8 +98,14 @@ typedef struct SWindowLogicNode {
   int8_t  slidingUnit;
   SFillNode* pFill;
   int64_t sessionGap;
+  SNode* pTspk;
 } SWindowLogicNode;
 
+typedef struct SSortLogicNode {
+  SLogicNode node;
+  SNodeList* pSortKeys;
+} SSortLogicNode;
+
 typedef enum ESubplanType {
   SUBPLAN_TYPE_MERGE = 1,
   SUBPLAN_TYPE_PARTIAL,
@@ -171,6 +179,8 @@ typedef SScanPhysiNode SStreamScanPhysiNode;
 typedef struct SSystemTableScanPhysiNode {
   SScanPhysiNode scan;
   SEpSet mgmtEpSet;
+  bool showRewrite;
+  int32_t accountId;
 } SSystemTableScanPhysiNode;
 
 typedef struct STableScanPhysiNode {
@@ -197,7 +207,7 @@ typedef struct SJoinPhysiNode {
 typedef struct SAggPhysiNode {
   SPhysiNode node;
   SNodeList* pExprs;   // these are expression list of group_by_clause and parameter expression of aggregate function
-  SNodeList* pGroupKeys; // SColumnRefNode list
+  SNodeList* pGroupKeys;
   SNodeList* pAggFuncs;
 } SAggPhysiNode;
 
@@ -222,6 +232,7 @@ typedef struct SWinodwPhysiNode {
 
 typedef struct SIntervalPhysiNode {
   SWinodwPhysiNode window;
+  SNode* pTspk; // timestamp primary key
   int64_t    interval;
   int64_t    offset;
   int64_t    sliding;
@@ -235,6 +246,12 @@ typedef struct SSessionWinodwPhysiNode {
   int64_t    gap;
 } SSessionWinodwPhysiNode;
 
+typedef struct SSortPhysiNode {
+  SPhysiNode node;
+  SNodeList* pExprs;   // these are expression list of order_by_clause and parameter expression of aggregate function
+  SNodeList* pSortKeys; // element is SOrderByExprNode, and SOrderByExprNode::pExpr is SColumnNode
+} SSortPhysiNode;
+
 typedef struct SDataSinkNode {
   ENodeType type;
   SDataBlockDescNode* pInputDataBlockDesc;

include/libs/nodes/querynodes.h

@@ -191,12 +191,13 @@ typedef struct SStateWindowNode {
 
 typedef struct SSessionWindowNode {
   ENodeType type; // QUERY_NODE_SESSION_WINDOW
-  SNode* pCol;
+  SNode* pCol; // timestamp primary key
   SNode* pGap; // gap between two session window(in microseconds)
 } SSessionWindowNode;
 
 typedef struct SIntervalWindowNode {
   ENodeType type; // QUERY_NODE_INTERVAL_WINDOW
+  SNode* pCol; // timestamp primary key
   SNode* pInterval; // SValueNode
   SNode* pOffset;   // SValueNode
   SNode* pSliding;  // SValueNode
@@ -231,6 +232,7 @@ typedef struct SSelectStmt {
   SNodeList* pOrderByList; // SOrderByExprNode
   SNode* pLimit;
   SNode* pSlimit;
+  char stmtName[TSDB_TABLE_NAME_LEN];
 } SSelectStmt;
 
 typedef enum ESetOperatorType {

include/libs/parser/parser.h

@@ -54,6 +54,7 @@ typedef struct SQuery {
   int32_t msgType;
   SArray* pDbList;
   SArray* pTableList;
+  bool showRewrite;
 } SQuery;
 
 int32_t qParseQuerySql(SParseContext* pCxt, SQuery** pQuery);

include/libs/planner/planner.h

@@ -29,6 +29,7 @@ typedef struct SPlanContext {
   SNode* pAstRoot;
   bool topicQuery;
   bool streamQuery;
+  bool showRewrite;
 } SPlanContext;
 
 // Create the physical plan for the query, according to the AST.

include/libs/qcom/query.h

@@ -150,6 +150,8 @@ int32_t cleanupTaskQueue();
  */
 int32_t taosAsyncExec(__async_exec_fn_t execFn, void* execParam, int32_t* code);
 
+int32_t asyncSendMsgToServerExt(void* pTransporter, SEpSet* epSet, int64_t* pTransporterId, const SMsgSendInfo* pInfo, bool persistHandle, void *ctx);
+
 /**
  * Asynchronously send message to server, after the response received, the callback will be incured.
  *

include/libs/qworker/qworker.h

@@ -28,6 +28,7 @@ enum {
   NODE_TYPE_VNODE = 1,
   NODE_TYPE_QNODE,
   NODE_TYPE_SNODE,
+  NODE_TYPE_MNODE,
 };
 
 

include/libs/scalar/scalar.h

@@ -42,6 +42,21 @@ int32_t scalarGenerateSetFromList(void **data, void *pNode, uint32_t type);
 int32_t vectorGetConvertType(int32_t type1, int32_t type2);
 int32_t vectorConvertImpl(SScalarParam* pIn, SScalarParam* pOut);
 
+int32_t absFunction(SScalarParam *pInput, int32_t inputNum, SScalarParam *pOutput);
+int32_t logFunction(SScalarParam *pInput, int32_t inputNum, SScalarParam *pOutput);
+int32_t powFunction(SScalarParam *pInput, int32_t inputNum, SScalarParam *pOutput);
+int32_t sqrtFunction(SScalarParam *pInput, int32_t inputNum, SScalarParam *pOutput);
+
+int32_t sinFunction(SScalarParam *pInput, int32_t inputNum, SScalarParam *pOutput);
+int32_t cosFunction(SScalarParam *pInput, int32_t inputNum, SScalarParam *pOutput);
+int32_t tanFunction(SScalarParam *pInput, int32_t inputNum, SScalarParam *pOutput);
+int32_t asinFunction(SScalarParam *pInput, int32_t inputNum, SScalarParam *pOutput);
+int32_t acosFunction(SScalarParam *pInput, int32_t inputNum, SScalarParam *pOutput);
+int32_t atanFunction(SScalarParam *pInput, int32_t inputNum, SScalarParam *pOutput);
+
+int32_t ceilFunction(SScalarParam *pInput, int32_t inputNum, SScalarParam *pOutput);
+int32_t floorFunction(SScalarParam *pInput, int32_t inputNum, SScalarParam *pOutput);
+int32_t roundFunction(SScalarParam *pInput, int32_t inputNum, SScalarParam *pOutput);
 
 #ifdef __cplusplus
 }

include/libs/stream/tstream.h

@@ -30,16 +30,18 @@ enum {
   STREAM_TASK_STATUS__STOP,
 };
 
+#if 0
 // pipe  -> fetch/pipe queue
 // merge -> merge      queue
 // write -> write      queue
 enum {
-  TASK_SINK_MSG__SND_PIPE = 1,
-  TASK_SINK_MSG__SND_MERGE,
-  TASK_SINK_MSG__VND_PIPE,
-  TASK_SINK_MSG__VND_MERGE,
-  TASK_SINK_MSG__VND_WRITE,
+  TASK_DISPATCH_MSG__SND_PIPE = 1,
+  TASK_DISPATCH_MSG__SND_MERGE,
+  TASK_DISPATCH_MSG__VND_PIPE,
+  TASK_DISPATCH_MSG__VND_MERGE,
+  TASK_DISPATCH_MSG__VND_WRITE,
 };
+#endif
 
 typedef struct {
   int32_t nodeId;  // 0 for snode
@@ -93,13 +95,14 @@ typedef struct {
 
 enum {
   TASK_SOURCE__SCAN = 1,
-  TASK_SOURCE__SINGLE,
-  TASK_SOURCE__MULTI,
+  TASK_SOURCE__PIPE,
+  TASK_SOURCE__MERGE,
 };
 
 enum {
   TASK_EXEC__NONE = 1,
-  TASK_EXEC__EXEC,
+  TASK_EXEC__PIPE,
+  TASK_EXEC__MERGE,
 };
 
 enum {
@@ -129,6 +132,9 @@ typedef struct {
   int16_t dispatchMsgType;
   int32_t downstreamTaskId;
 
+  int32_t nodeId;
+  SEpSet  epSet;
+
   // source preprocess
 
   // exec

include/libs/transport/trpc.h

@@ -52,8 +52,8 @@ typedef struct {
   char    user[TSDB_USER_LEN];
   SRpcMsg rpcMsg;
   int32_t rspLen;
-  void   *pRsp;
-  void   *pNode;
+  void *  pRsp;
+  void *  pNode;
 } SNodeMsg;
 
 typedef struct SRpcInit {
@@ -81,13 +81,21 @@ typedef struct SRpcInit {
 } SRpcInit;
 
 typedef struct {
-  void *  val;
-  int32_t len;
-  void (*freeFunc)(const void *arg);
+  void     *val;
+  int32_t (*clone)(void *src, void **dst);
+  void    (*freeFunc)(const void *arg);
 } SRpcCtxVal;
 
 typedef struct {
-  SHashObj *args;
+  int32_t   msgType;
+  void     *val;
+  int32_t (*clone)(void *src, void **dst);
+  void    (*freeFunc)(const void *arg);
+} SRpcBrokenlinkVal;
+
+typedef struct {
+  SHashObj *        args;
+  SRpcBrokenlinkVal brokenVal;
 } SRpcCtx;
 
 int32_t rpcInit();

include/libs/wal/wal.h

@@ -61,30 +61,45 @@ extern "C" {
     }                                                             \
   }
 
-#define WAL_HEAD_VER 0
+#define WAL_HEAD_VER     0
 #define WAL_NOSUFFIX_LEN 20
-#define WAL_SUFFIX_AT (WAL_NOSUFFIX_LEN + 1)
-#define WAL_LOG_SUFFIX "log"
+#define WAL_SUFFIX_AT    (WAL_NOSUFFIX_LEN + 1)
+#define WAL_LOG_SUFFIX   "log"
 #define WAL_INDEX_SUFFIX "idx"
-#define WAL_REFRESH_MS 1000
-#define WAL_MAX_SIZE (TSDB_MAX_WAL_SIZE + sizeof(SWalHead))
-#define WAL_PATH_LEN (TSDB_FILENAME_LEN + 12)
-#define WAL_FILE_LEN (WAL_PATH_LEN + 32)
-#define WAL_MAGIC 0xFAFBFCFDULL
+#define WAL_REFRESH_MS   1000
+#define WAL_MAX_SIZE     (TSDB_MAX_WAL_SIZE + sizeof(SWalHead))
+#define WAL_PATH_LEN     (TSDB_FILENAME_LEN + 12)
+#define WAL_FILE_LEN     (WAL_PATH_LEN + 32)
+#define WAL_MAGIC        0xFAFBFCFDULL
 
 #define WAL_CUR_FAILED 1
 
 #pragma pack(push, 1)
-typedef enum { TAOS_WAL_NOLOG = 0, TAOS_WAL_WRITE = 1, TAOS_WAL_FSYNC = 2 } EWalType;
+typedef enum {
+  TAOS_WAL_NOLOG = 0,
+  TAOS_WAL_WRITE = 1,
+  TAOS_WAL_FSYNC = 2,
+} EWalType;
+
+// used by sync module
+typedef struct {
+  int8_t   isWeek;
+  uint64_t seqNum;
+  uint64_t term;
+} SSyncLogMeta;
 
 typedef struct SWalReadHead {
   int8_t  headVer;
-  int16_t msgType;
   int8_t  reserved;
+  int16_t msgType;
   int32_t len;
   int64_t ingestTs;  // not implemented
   int64_t version;
-  char    body[];
+
+  // sync meta
+  SSyncLogMeta syncMeta;
+
+  char body[];
 } SWalReadHead;
 
 typedef struct {
@@ -117,16 +132,16 @@ typedef struct SWal {
   SWalCfg cfg;
   int32_t fsyncSeq;
   // meta
-  SWalVer vers;
+  SWalVer   vers;
   TdFilePtr pWriteLogTFile;
   TdFilePtr pWriteIdxTFile;
-  int32_t writeCur;
-  SArray *fileInfoSet;
+  int32_t   writeCur;
+  SArray   *fileInfoSet;
   // status
   int64_t totSize;
   int64_t lastRollSeq;
   // ctl
-  int64_t         refId;
+  int64_t       refId;
   TdThreadMutex mutex;
   // path
   char path[WAL_PATH_LEN];
@@ -158,6 +173,8 @@ int32_t walAlter(SWal *, SWalCfg *pCfg);
 void    walClose(SWal *);
 
 // write
+int64_t walWriteWithSyncInfo(SWal *, int64_t index, tmsg_t msgType, SSyncLogMeta syncMeta, const void *body,
+                             int32_t bodyLen);
 int64_t walWrite(SWal *, int64_t index, tmsg_t msgType, const void *body, int32_t bodyLen);
 void    walFsync(SWal *, bool force);
 

include/os/os.h

@@ -75,7 +75,6 @@ extern "C" {
 #include "osDef.h"
 #include "osDir.h"
 #include "osEndian.h"
-#include "osEnv.h"
 #include "osFile.h"
 #include "osLocale.h"
 #include "osLz4.h"
@@ -93,8 +92,9 @@ extern "C" {
 #include "osTime.h"
 #include "osTimer.h"
 #include "osTimezone.h"
+#include "osEnv.h"
 
-void osInit();
+void osDefaultInit();
 
 #ifdef __cplusplus
 }

include/os/osEnv.h

@@ -22,17 +22,18 @@
 extern "C" {
 #endif
 
-extern char    tsOsName[];
-extern char    tsTimezone[];
-extern char    tsCharset[];
-extern char    tsLocale[];
-extern int8_t  tsDaylight;
-extern bool    tsEnableCoreFile;
-extern int64_t tsPageSizeKB;
-extern int64_t tsOpenMax;
-extern int64_t tsStreamMax;
-extern float   tsNumOfCores;
-extern int64_t tsTotalMemoryKB;
+extern char            tsOsName[];
+extern char            tsTimezoneStr[];
+extern enum TdTimezone tsTimezone;
+extern char            tsCharset[];
+extern char            tsLocale[];
+extern int8_t          tsDaylight;
+extern bool            tsEnableCoreFile;
+extern int64_t         tsPageSizeKB;
+extern int64_t         tsOpenMax;
+extern int64_t         tsStreamMax;
+extern float           tsNumOfCores;
+extern int64_t         tsTotalMemoryKB;
 
 extern char configDir[];
 extern char tsDataDir[];
@@ -43,11 +44,12 @@ extern SDiskSpace tsDataSpace;
 extern SDiskSpace tsLogSpace;
 extern SDiskSpace tsTempSpace;
 
-void osInit();
+void osDefaultInit();
 void osUpdate();
 void osCleanup();
 bool osLogSpaceAvailable();
 void osSetTimezone(const char *timezone);
+void osSetSystemLocale(const char *inLocale, const char *inCharSet);
 
 #ifdef __cplusplus
 }

include/os/osTimezone.h

@@ -26,8 +26,37 @@ extern "C" {
     #define tzset TZSET_FUNC_TAOS_FORBID
 #endif
 
-void taosGetSystemTimezone(char *outTimezone);
-void taosSetSystemTimezone(const char *inTimezone, char *outTimezone, int8_t *outDaylight);
+enum TdTimezone
+{
+      TdWestZone12=-12,
+      TdWestZone11,
+      TdWestZone10,
+      TdWestZone9,
+      TdWestZone8,
+      TdWestZone7,
+      TdWestZone6,
+      TdWestZone5,
+      TdWestZone4,
+      TdWestZone3,
+      TdWestZone2,
+      TdWestZone1,
+      TdZeroZone,
+      TdEastZone1,
+      TdEastZone2,
+      TdEastZone3,
+      TdEastZone4,
+      TdEastZone5,
+      TdEastZone6,
+      TdEastZone7,
+      TdEastZone8,
+      TdEastZone9,
+      TdEastZone10,
+      TdEastZone11,
+      TdEastZone12
+};
+
+void taosGetSystemTimezone(char *outTimezone, enum TdTimezone *tsTimezone);
+void taosSetSystemTimezone(const char *inTimezone, char *outTimezone, int8_t *outDaylight, enum TdTimezone *tsTimezone);
 
 #ifdef __cplusplus
 }

include/util/taoserror.h

@@ -16,6 +16,8 @@
 #ifndef _TD_UTIL_TAOS_ERROR_H_
 #define _TD_UTIL_TAOS_ERROR_H_
 
+#include "os.h"
+
 #ifdef __cplusplus
 extern "C" {
 #endif

include/util/tdef.h

@@ -109,6 +109,8 @@ extern const int32_t TYPE_BYTES[15];
 #define TSDB_INS_TABLE_USER_USERS             "user_users"
 #define TSDB_INS_TABLE_VGROUPS                "vgroups"
 
+#define TSDB_INS_USER_STABLES_DBNAME_COLID    2
+
 #define TSDB_TICK_PER_SECOND(precision)                      \
   ((int64_t)((precision) == TSDB_TIME_PRECISION_MILLI ? 1e3L \
                                                       : ((precision) == TSDB_TIME_PRECISION_MICRO ? 1e6L : 1e9L)))

source/client/src/clientEnv.c

@@ -192,6 +192,10 @@ static void doDestroyRequest(void *p) {
   doFreeReqResultInfo(&pRequest->body.resInfo);
   qDestroyQueryPlan(pRequest->body.pDag);
 
+  if (pRequest->body.queryJob != 0) {
+    schedulerFreeJob(pRequest->body.queryJob);
+  }
+
   if (pRequest->body.showInfo.pArray != NULL) {
     taosArrayDestroy(pRequest->body.showInfo.pArray);
   }
@@ -404,10 +408,10 @@ int taos_options_imp(TSDB_OPTION option, const char *str) {
       assert(cfg != NULL);
 
       if (cfg->cfgStatus <= TAOS_CFG_CSTATUS_OPTION) {
-        tstrncpy(tsTimezone, str, TD_TIMEZONE_LEN);
+        tstrncpy(tsTimezoneStr, str, TD_TIMEZONE_LEN);
         tsSetTimeZone();
         cfg->cfgStatus = TAOS_CFG_CSTATUS_OPTION;
-        tscDebug("timezone set:%s, input:%s by taos_options", tsTimezone, str);
+        tscDebug("timezone set:%s, input:%s by taos_options", tsTimezoneStr, str);
       } else {
         tscWarn("config option:%s, input value:%s, is configured by %s, use %s", cfg->option, str,
                 tsCfgStatusStr[cfg->cfgStatus], (char *)cfg->ptr);

source/client/src/clientImpl.c

@@ -199,7 +199,8 @@ int32_t getPlan(SRequestObj* pRequest, SQuery* pQuery, SQueryPlan** pPlan, SArra
     .queryId = pRequest->requestId,
     .acctId = pRequest->pTscObj->acctId,
     .mgmtEpSet = getEpSet_s(&pRequest->pTscObj->pAppInfo->mgmtEp),
-    .pAstRoot = pQuery->pRoot
+    .pAstRoot = pQuery->pRoot,
+    .showRewrite = pQuery->showRewrite
   };
   int32_t  code = qCreateQueryPlan(&cxt, pPlan, pNodeList);
   if (code != 0) {
@@ -330,6 +331,8 @@ SRequestObj* execQuery(STscObj* pTscObj, const char* sql, int sqlLen) {
       pRequest->code = code;
       break;
     }
+
+    destroyRequest(pRequest);
   }
   
   return pRequest;

source/client/src/tmq.c

@@ -27,9 +27,7 @@
 #include "tref.h"
 
 struct tmq_list_t {
-  int32_t cnt;
-  int32_t tot;
-  char*   elems[];
+  SArray container;
 };
 
 struct tmq_topic_vgroup_t {
@@ -45,11 +43,14 @@ struct tmq_topic_vgroup_list_t {
 struct tmq_conf_t {
   char           clientId[256];
   char           groupId[TSDB_CGROUP_LEN];
-  int8_t         auto_commit;
+  int8_t         autoCommit;
   int8_t         resetOffset;
+  uint16_t       port;
+  char*          ip;
+  char*          user;
+  char*          pass;
+  char*          db;
   tmq_commit_cb* commit_cb;
-  /*char*          ip;*/
-  /*uint16_t       port;*/
 };
 
 struct tmq_t {
@@ -98,12 +99,13 @@ typedef struct {
 
 typedef struct {
   // subscribe info
-  int32_t sqlLen;
-  char*   sql;
-  char*   topicName;
-  int64_t topicId;
-  int32_t nextVgIdx;
-  SArray* vgs;  // SArray<SMqClientVg>
+  int32_t        sqlLen;
+  char*          sql;
+  char*          topicName;
+  int64_t        topicId;
+  int32_t        nextVgIdx;
+  SArray*        vgs;  // SArray<SMqClientVg>
+  SSchemaWrapper schema;
 } SMqClientTopic;
 
 typedef struct {
@@ -137,7 +139,7 @@ typedef struct {
 
 tmq_conf_t* tmq_conf_new() {
   tmq_conf_t* conf = taosMemoryCalloc(1, sizeof(tmq_conf_t));
-  conf->auto_commit = false;
+  conf->autoCommit = false;
   conf->resetOffset = TMQ_CONF__RESET_OFFSET__EARLIEAST;
   return conf;
 }
@@ -151,21 +153,24 @@ tmq_conf_res_t tmq_conf_set(tmq_conf_t* conf, const char* key, const char* value
     strcpy(conf->groupId, value);
     return TMQ_CONF_OK;
   }
+
   if (strcmp(key, "client.id") == 0) {
     strcpy(conf->clientId, value);
     return TMQ_CONF_OK;
   }
+
   if (strcmp(key, "enable.auto.commit") == 0) {
     if (strcmp(value, "true") == 0) {
-      conf->auto_commit = true;
+      conf->autoCommit = true;
       return TMQ_CONF_OK;
     } else if (strcmp(value, "false") == 0) {
-      conf->auto_commit = false;
+      conf->autoCommit = false;
       return TMQ_CONF_OK;
     } else {
       return TMQ_CONF_INVALID;
     }
   }
+
   if (strcmp(key, "auto.offset.reset") == 0) {
     if (strcmp(value, "none") == 0) {
       conf->resetOffset = TMQ_CONF__RESET_OFFSET__NONE;
@@ -180,26 +185,49 @@ tmq_conf_res_t tmq_conf_set(tmq_conf_t* conf, const char* key, const char* value
       return TMQ_CONF_INVALID;
     }
   }
+
+  if (strcmp(key, "connection.ip") == 0) {
+    conf->ip = strdup(value);
+    return TMQ_CONF_OK;
+  }
+  if (strcmp(key, "connection.user") == 0) {
+    conf->user = strdup(value);
+    return TMQ_CONF_OK;
+  }
+  if (strcmp(key, "connection.pass") == 0) {
+    conf->pass = strdup(value);
+    return TMQ_CONF_OK;
+  }
+  if (strcmp(key, "connection.port") == 0) {
+    conf->port = atoi(value);
+    return TMQ_CONF_OK;
+  }
+  if (strcmp(key, "connection.db") == 0) {
+    conf->db = strdup(value);
+    return TMQ_CONF_OK;
+  }
+
   return TMQ_CONF_UNKNOWN;
 }
 
 tmq_list_t* tmq_list_new() {
-  tmq_list_t* ptr = taosMemoryMalloc(sizeof(tmq_list_t) + 8 * sizeof(char*));
-  if (ptr == NULL) {
-    return ptr;
-  }
-  ptr->cnt = 0;
-  ptr->tot = 8;
-  return ptr;
+  //
+  return (tmq_list_t*)taosArrayInit(0, sizeof(void*));
 }
 
-int32_t tmq_list_append(tmq_list_t* ptr, const char* src) {
-  if (ptr->cnt >= ptr->tot - 1) return -1;
-  ptr->elems[ptr->cnt] = strdup(src);
-  ptr->cnt++;
+int32_t tmq_list_append(tmq_list_t* list, const char* src) {
+  SArray* container = &list->container;
+  char*   topic = strdup(src);
+  if (taosArrayPush(container, &topic) == NULL) return -1;
   return 0;
 }
 
+void tmq_list_destroy(tmq_list_t* list) {
+  SArray* container = (SArray*)list;
+  /*taosArrayDestroy(container);*/
+  taosArrayDestroyEx(container, (void (*)(void*))taosMemoryFree);
+}
+
 void tmqClearUnhandleMsg(tmq_t* tmq) {
   tmq_message_t* msg;
   while (1) {
@@ -268,17 +296,57 @@ tmq_t* tmq_consumer_new(void* conn, tmq_conf_t* conf, char* errstr, int32_t errs
   // set conf
   strcpy(pTmq->clientId, conf->clientId);
   strcpy(pTmq->groupId, conf->groupId);
-  pTmq->autoCommit = conf->auto_commit;
+  pTmq->autoCommit = conf->autoCommit;
   pTmq->commit_cb = conf->commit_cb;
   pTmq->resetOffsetCfg = conf->resetOffset;
 
+  pTmq->consumerId = generateRequestId() & (((uint64_t)-1) >> 1);
+  pTmq->clientTopics = taosArrayInit(0, sizeof(SMqClientTopic));
+  if (pTmq->clientTopics == NULL) {
+    taosMemoryFree(pTmq);
+    return NULL;
+  }
+
+  pTmq->mqueue = taosOpenQueue();
+  pTmq->qall = taosAllocateQall();
+
   tsem_init(&pTmq->rspSem, 0, 0);
 
+  return pTmq;
+}
+
+tmq_t* tmq_consumer_new1(tmq_conf_t* conf, char* errstr, int32_t errstrLen) {
+  tmq_t* pTmq = taosMemoryCalloc(1, sizeof(tmq_t));
+  if (pTmq == NULL) {
+    return NULL;
+  }
+  pTmq->pTscObj = taos_connect(conf->ip, conf->user, conf->pass, conf->db, conf->port);
+
+  pTmq->inWaiting = 0;
+  pTmq->status = 0;
+  pTmq->pollCnt = 0;
+  pTmq->epoch = 0;
+  pTmq->waitingRequest = 0;
+  pTmq->readyRequest = 0;
+  // set conf
+  strcpy(pTmq->clientId, conf->clientId);
+  strcpy(pTmq->groupId, conf->groupId);
+  pTmq->autoCommit = conf->autoCommit;
+  pTmq->commit_cb = conf->commit_cb;
+  pTmq->resetOffsetCfg = conf->resetOffset;
+
   pTmq->consumerId = generateRequestId() & (((uint64_t)-1) >> 1);
   pTmq->clientTopics = taosArrayInit(0, sizeof(SMqClientTopic));
+  if (pTmq->clientTopics == NULL) {
+    taosMemoryFree(pTmq);
+    return NULL;
+  }
 
   pTmq->mqueue = taosOpenQueue();
   pTmq->qall = taosAllocateQall();
+
+  tsem_init(&pTmq->rspSem, 0, 0);
+
   return pTmq;
 }
 
@@ -372,7 +440,8 @@ tmq_resp_err_t tmq_commit(tmq_t* tmq, const tmq_topic_vgroup_list_t* offsets, in
 
 tmq_resp_err_t tmq_subscribe(tmq_t* tmq, tmq_list_t* topic_list) {
   SRequestObj* pRequest = NULL;
-  int32_t      sz = topic_list->cnt;
+  SArray*      container = &topic_list->container;
+  int32_t      sz = taosArrayGetSize(container);
   // destroy ex
   taosArrayDestroy(tmq->clientTopics);
   tmq->clientTopics = taosArrayInit(sz, sizeof(SMqClientTopic));
@@ -384,7 +453,8 @@ tmq_resp_err_t tmq_subscribe(tmq_t* tmq, tmq_list_t* topic_list) {
   req.topicNames = taosArrayInit(sz, sizeof(void*));
 
   for (int i = 0; i < sz; i++) {
-    char* topicName = topic_list->elems[i];
+    /*char* topicName = topic_list->elems[i];*/
+    char* topicName = taosArrayGetP(container, i);
 
     SName name = {0};
     char* dbName = getDbOfConnection(tmq->pTscObj);

source/common/src/tdatablock.c

@@ -1380,7 +1380,7 @@ static char* formatTimestamp(char* buf, int64_t val, int precision) {
 
   return buf;
 }
-void blockDebugShowData(SArray* dataBlocks) {
+void blockDebugShowData(const SArray* dataBlocks) {
   char    pBuf[128];
   int32_t sz = taosArrayGetSize(dataBlocks);
   for (int32_t i = 0; i < sz; i++) {
@@ -1398,13 +1398,17 @@ void blockDebugShowData(SArray* dataBlocks) {
             printf(" %25s |", pBuf);
             break;
           case TSDB_DATA_TYPE_INT:
-          case TSDB_DATA_TYPE_UINT:
             printf(" %15d |", *(int32_t*)var);
             break;
+          case TSDB_DATA_TYPE_UINT:
+            printf(" %15u |", *(uint32_t*)var);
+            break;
           case TSDB_DATA_TYPE_BIGINT:
-          case TSDB_DATA_TYPE_UBIGINT:
             printf(" %15ld |", *(int64_t*)var);
             break;
+          case TSDB_DATA_TYPE_UBIGINT:
+            printf(" %15lu |", *(uint64_t*)var);
+            break;
         }
       }
       printf("\n");

source/common/src/tglobal.c

@@ -122,7 +122,7 @@ bool tsRetrieveBlockingModel = 0;
 // last_row(*), first(*), last_row(ts, col1, col2) query, the result fields will be the original column name
 bool tsKeepOriginalColumnName = 0;
 
-// long query death-lock
+// kill long query
 bool tsDeadLockKillQuery = 0;
 
 // tsdb config
@@ -303,7 +303,7 @@ static int32_t taosAddClientCfg(SConfig *pCfg) {
 static int32_t taosAddSystemCfg(SConfig *pCfg) {
   SysNameInfo info = taosGetSysNameInfo();
 
-  if (cfgAddTimezone(pCfg, "timezone", tsTimezone) != 0) return -1;
+  if (cfgAddTimezone(pCfg, "timezone", tsTimezoneStr) != 0) return -1;
   if (cfgAddLocale(pCfg, "locale", tsLocale) != 0) return -1;
   if (cfgAddCharset(pCfg, "charset", tsCharset) != 0) return -1;
   if (cfgAddBool(pCfg, "enableCoreFile", 1, 1) != 0) return -1;
@@ -431,12 +431,13 @@ static int32_t taosSetClientCfg(SConfig *pCfg) {
 static void taosSetSystemCfg(SConfig *pCfg) {
   SConfigItem *pItem = cfgGetItem(pCfg, "timezone");
   osSetTimezone(pItem->str);
-  uDebug("timezone format changed from %s to %s", pItem->str, tsTimezone);
-  cfgSetItem(pCfg, "timezone", tsTimezone, pItem->stype);
+  uDebug("timezone format changed from %s to %s", pItem->str, tsTimezoneStr);
+  cfgSetItem(pCfg, "timezone", tsTimezoneStr, pItem->stype);
 
   const char *locale = cfgGetItem(pCfg, "locale")->str;
   const char *charset = cfgGetItem(pCfg, "charset")->str;
   taosSetSystemLocale(locale, charset);
+  osSetSystemLocale(locale, charset);
 
   bool enableCore = cfgGetItem(pCfg, "enableCoreFile")->bval;
   taosSetConsoleEcho(enableCore);
@@ -483,7 +484,7 @@ static int32_t taosSetServerCfg(SConfig *pCfg) {
 
 int32_t taosCreateLog(const char *logname, int32_t logFileNum, const char *cfgDir, const char *envFile,
                       const char *apolloUrl, SArray *pArgs, bool tsc) {
-  osInit();
+  osDefaultInit();
 
   SConfig *pCfg = cfgInit();
   if (pCfg == NULL) return -1;

source/common/src/tmsg.c

@@ -2871,7 +2871,6 @@ int32_t tSerializeSSchedulerHbRsp(void *buf, int32_t bufLen, SSchedulerHbRsp *pR
   tCoderInit(&encoder, TD_LITTLE_ENDIAN, buf, bufLen, TD_ENCODER);
 
   if (tStartEncode(&encoder) < 0) return -1;
-  if (tEncodeU64(&encoder, pRsp->seqId) < 0) return -1;
   if (tEncodeI32(&encoder, pRsp->epId.nodeId) < 0) return -1;
   if (tEncodeU16(&encoder, pRsp->epId.ep.port) < 0) return -1;
   if (tEncodeCStr(&encoder, pRsp->epId.ep.fqdn) < 0) return -1;
@@ -2900,7 +2899,6 @@ int32_t tDeserializeSSchedulerHbRsp(void *buf, int32_t bufLen, SSchedulerHbRsp *
   tCoderInit(&decoder, TD_LITTLE_ENDIAN, buf, bufLen, TD_DECODER);
 
   if (tStartDecode(&decoder) < 0) return -1;
-  if (tDecodeU64(&decoder, &pRsp->seqId) < 0) return -1;
   if (tDecodeI32(&decoder, &pRsp->epId.nodeId) < 0) return -1;
   if (tDecodeU16(&decoder, &pRsp->epId.ep.port) < 0) return -1;
   if (tDecodeCStrTo(&decoder, pRsp->epId.ep.fqdn) < 0) return -1;

source/dnode/mgmt/container/src/dndInt.c

@@ -134,6 +134,7 @@ void dndProcessStartupReq(SDnode *pDnode, SRpcMsg *pReq) {
   dndGetStartup(pDnode, pStartup);
 
   dDebug("startup req is sent, step:%s desc:%s finished:%d", pStartup->name, pStartup->desc, pStartup->finished);
-  SRpcMsg rpcRsp = {.handle = pReq->handle, .pCont = pStartup, .contLen = sizeof(SStartupReq)};
+  SRpcMsg rpcRsp = {
+      .handle = pReq->handle, .pCont = pStartup, .contLen = sizeof(SStartupReq), .ahandle = pReq->ahandle};
   rpcSendResponse(&rpcRsp);
 }

source/dnode/mgmt/dnode/src/dmMsg.c

@@ -36,7 +36,7 @@ void dmSendStatusReq(SDnodeMgmt *pMgmt) {
   req.clusterCfg.checkTime = 0;
   char timestr[32] = "1970-01-01 00:00:00.00";
   (void)taosParseTime(timestr, &req.clusterCfg.checkTime, (int32_t)strlen(timestr), TSDB_TIME_PRECISION_MILLI, 0);
-  memcpy(req.clusterCfg.timezone, tsTimezone, TD_TIMEZONE_LEN);
+  memcpy(req.clusterCfg.timezone, tsTimezoneStr, TD_TIMEZONE_LEN);
   memcpy(req.clusterCfg.locale, tsLocale, TD_LOCALE_LEN);
   memcpy(req.clusterCfg.charset, tsCharset, TD_LOCALE_LEN);
   taosRUnLockLatch(&pMgmt->latch);

source/dnode/mgmt/dnode/src/dmWorker.c

@@ -23,7 +23,7 @@
 
 static void *dmThreadRoutine(void *param) {
   SDnodeMgmt *pMgmt = param;
-  SDnode     *pDnode = pMgmt->pDnode;
+  SDnode *    pDnode = pMgmt->pDnode;
   int64_t     lastStatusTime = taosGetTimestampMs();
   int64_t     lastMonitorTime = lastStatusTime;
 
@@ -55,7 +55,7 @@ static void *dmThreadRoutine(void *param) {
 static void dmProcessQueue(SQueueInfo *pInfo, SNodeMsg *pMsg) {
   SDnodeMgmt *pMgmt = pInfo->ahandle;
 
-  SDnode  *pDnode = pMgmt->pDnode;
+  SDnode * pDnode = pMgmt->pDnode;
   SRpcMsg *pRpc = &pMsg->rpcMsg;
   int32_t  code = -1;
   dTrace("msg:%p, will be processed in dnode queue", pMsg);

source/dnode/mgmt/mnode/inc/mmInt.h

@@ -28,6 +28,7 @@ typedef struct SMnodeMgmt {
   SDnode       *pDnode;
   SMgmtWrapper *pWrapper;
   const char   *path;
+  SSingleWorker queryWorker;
   SSingleWorker readWorker;
   SSingleWorker writeWorker;
   SSingleWorker syncWorker;
@@ -57,11 +58,13 @@ void    mmStopWorker(SMnodeMgmt *pMgmt);
 int32_t mmProcessWriteMsg(SMnodeMgmt *pMgmt, SNodeMsg *pMsg);
 int32_t mmProcessSyncMsg(SMnodeMgmt *pMgmt, SNodeMsg *pMsg);
 int32_t mmProcessReadMsg(SMnodeMgmt *pMgmt, SNodeMsg *pMsg);
+int32_t mmProcessQueryMsg(SMnodeMgmt *pMgmt, SNodeMsg *pMsg);
 int32_t mmPutMsgToWriteQueue(SMgmtWrapper *pWrapper, SRpcMsg *pRpcMsg);
 int32_t mmPutMsgToReadQueue(SMgmtWrapper *pWrapper, SRpcMsg *pRpcMsg);
+int32_t mmPutMsgToQueryQueue(SMgmtWrapper *pWrapper, SRpcMsg *pRpc);
 
 #ifdef __cplusplus
 }
 #endif
 
-#endif /*_TD_DND_MNODE_INT_H_*/
+#endif /*_TD_DND_MNODE_INT_H_*/
\ No newline at end of file

source/dnode/mgmt/mnode/src/mmInt.c

@@ -45,7 +45,8 @@ static void mmInitOption(SMnodeMgmt *pMgmt, SMnodeOpt *pOption) {
 
   SMsgCb msgCb = {0};
   msgCb.pWrapper = pMgmt->pWrapper;
-  msgCb.queueFps[QUERY_QUEUE] = mmPutMsgToReadQueue;
+  msgCb.queueFps[QUERY_QUEUE] = mmPutMsgToQueryQueue;
+  msgCb.queueFps[READ_QUEUE] = mmPutMsgToReadQueue;
   msgCb.queueFps[WRITE_QUEUE] = mmPutMsgToWriteQueue;
   msgCb.sendReqFp = dndSendReqToDnode;
   msgCb.sendMnodeReqFp = dndSendReqToMnode;
@@ -258,4 +259,4 @@ int32_t mmMonitorMnodeInfo(SMgmtWrapper *pWrapper, SMonClusterInfo *pClusterInfo
                          SMonGrantInfo *pGrantInfo) {
   SMnodeMgmt *pMgmt = pWrapper->pMgmt;
   return mndGetMonitorInfo(pMgmt->pMnode, pClusterInfo, pVgroupInfo, pGrantInfo);
-}
+}
\ No newline at end of file

source/dnode/mgmt/mnode/src/mmMsg.c

@@ -156,9 +156,10 @@ void mmInitMsgHandles(SMgmtWrapper *pWrapper) {
   dndSetMsgHandle(pWrapper, TDMT_VND_CREATE_SMA_RSP, (NodeMsgFp)mmProcessWriteMsg, VND_VGID);
   dndSetMsgHandle(pWrapper, TDMT_VND_DROP_SMA_RSP, (NodeMsgFp)mmProcessWriteMsg, VND_VGID);
 
-  dndSetMsgHandle(pWrapper, TDMT_VND_QUERY, (NodeMsgFp)mmProcessReadMsg, MND_VGID);
-  dndSetMsgHandle(pWrapper, TDMT_VND_QUERY_CONTINUE, (NodeMsgFp)mmProcessReadMsg, MND_VGID);
-  dndSetMsgHandle(pWrapper, TDMT_VND_FETCH, (NodeMsgFp)mmProcessReadMsg, MND_VGID);
-  dndSetMsgHandle(pWrapper, TDMT_VND_FETCH_RSP, (NodeMsgFp)mmProcessReadMsg, MND_VGID);
+  dndSetMsgHandle(pWrapper, TDMT_VND_QUERY, (NodeMsgFp)mmProcessQueryMsg, MND_VGID);
+  dndSetMsgHandle(pWrapper, TDMT_VND_QUERY_CONTINUE, (NodeMsgFp)mmProcessQueryMsg, MND_VGID);
+  dndSetMsgHandle(pWrapper, TDMT_VND_FETCH, (NodeMsgFp)mmProcessQueryMsg, MND_VGID);
+  dndSetMsgHandle(pWrapper, TDMT_VND_DROP_TASK, (NodeMsgFp)mmProcessQueryMsg, MND_VGID);
+  dndSetMsgHandle(pWrapper, TDMT_VND_QUERY_HEARTBEAT, (NodeMsgFp)mmProcessQueryMsg, MND_VGID);
 
 }

source/dnode/mgmt/mnode/src/mmWorker.c

@@ -44,6 +44,30 @@ static void mmProcessQueue(SQueueInfo *pInfo, SNodeMsg *pMsg) {
   taosFreeQitem(pMsg);
 }
 
+static void mmProcessQueryQueue(SQueueInfo *pInfo, SNodeMsg *pMsg) {
+  SMnodeMgmt *pMgmt = pInfo->ahandle;
+
+  dTrace("msg:%p, will be processed in mnode queue", pMsg);
+  SRpcMsg *pRpc = &pMsg->rpcMsg;
+  int32_t  code = -1;
+
+  pMsg->pNode = pMgmt->pMnode;
+  code = mndProcessMsg(pMsg);
+
+  if (pRpc->msgType & 1U) {
+    if (pRpc->handle == NULL) return;
+    if (code != 0) {
+      SRpcMsg rsp = {.handle = pRpc->handle, .code = code, .ahandle = pRpc->ahandle};
+      dndSendRsp(pMgmt->pWrapper, &rsp);
+    }
+  }
+
+  dTrace("msg:%p, is freed, result:0x%04x:%s", pMsg, code & 0XFFFF, tstrerror(code));
+  rpcFreeCont(pRpc->pCont);
+  taosFreeQitem(pMsg);
+}
+
+
 static int32_t mmPutMsgToWorker(SMnodeMgmt *pMgmt, SSingleWorker *pWorker, SNodeMsg *pMsg) {
   dTrace("msg:%p, put into worker %s", pMsg, pWorker->name);
   return taosWriteQitem(pWorker->queue, pMsg);
@@ -61,6 +85,10 @@ int32_t mmProcessReadMsg(SMnodeMgmt *pMgmt, SNodeMsg *pMsg) {
   return mmPutMsgToWorker(pMgmt, &pMgmt->readWorker, pMsg);
 }
 
+int32_t mmProcessQueryMsg(SMnodeMgmt *pMgmt, SNodeMsg *pMsg) {
+  return mmPutMsgToWorker(pMgmt, &pMgmt->queryWorker, pMsg);
+}
+
 static int32_t mmPutRpcMsgToWorker(SMnodeMgmt *pMgmt, SSingleWorker *pWorker, SRpcMsg *pRpc) {
   SNodeMsg *pMsg = taosAllocateQitem(sizeof(SNodeMsg));
   if (pMsg == NULL) {
@@ -90,8 +118,20 @@ int32_t mmPutMsgToReadQueue(SMgmtWrapper *pWrapper, SRpcMsg *pRpc) {
   return mmPutRpcMsgToWorker(pMgmt, &pMgmt->readWorker, pRpc);
 }
 
+int32_t mmPutMsgToQueryQueue(SMgmtWrapper *pWrapper, SRpcMsg *pRpc) {
+  SMnodeMgmt *pMgmt = pWrapper->pMgmt;
+  return mmPutRpcMsgToWorker(pMgmt, &pMgmt->queryWorker, pRpc);
+}
+
+
 int32_t mmStartWorker(SMnodeMgmt *pMgmt) {
   SSingleWorkerCfg cfg = {.minNum = 0, .maxNum = 1, .name = "mnode-read", .fp = (FItem)mmProcessQueue, .param = pMgmt};
+  SSingleWorkerCfg queryCfg = {.minNum = 0, .maxNum = 1, .name = "mnode-query", .fp = (FItem)mmProcessQueryQueue, .param = pMgmt};
+
+  if (tSingleWorkerInit(&pMgmt->queryWorker, &queryCfg) != 0) {
+    dError("failed to start mnode-query worker since %s", terrstr());
+    return -1;
+  }
 
   if (tSingleWorkerInit(&pMgmt->readWorker, &cfg) != 0) {
     dError("failed to start mnode-read worker since %s", terrstr());
@@ -114,6 +154,7 @@ int32_t mmStartWorker(SMnodeMgmt *pMgmt) {
 
 void mmStopWorker(SMnodeMgmt *pMgmt) {
   tSingleWorkerCleanup(&pMgmt->readWorker);
+  tSingleWorkerCleanup(&pMgmt->queryWorker);
   tSingleWorkerCleanup(&pMgmt->writeWorker);
   tSingleWorkerCleanup(&pMgmt->syncWorker);
   dDebug("mnode workers are closed");

source/dnode/mgmt/vnode/src/vmWorker.c

@@ -165,8 +165,8 @@ static int32_t vmPutNodeMsgToQueue(SVnodesMgmt *pMgmt, SNodeMsg *pMsg, EQueueTyp
   int32_t  code = -1;
 
   SMsgHead *pHead = pRpc->pCont;
-  pHead->contLen = htonl(pHead->contLen);
-  pHead->vgId = htonl(pHead->vgId);
+  pHead->contLen = ntohl(pHead->contLen);
+  pHead->vgId = ntohl(pHead->vgId);
 
   SVnodeObj *pVnode = vmAcquireVnode(pMgmt, pHead->vgId);
   if (pVnode == NULL) {

source/dnode/mnode/impl/CMakeLists.txt

@@ -6,7 +6,7 @@ target_include_directories(
     PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}/inc"
 )
 target_link_libraries(
-    mnode scheduler sdb wal transport cjson sync monitor stream parser
+    mnode scheduler sdb wal transport cjson sync monitor executor qworker stream parser
 )
 
 if(${BUILD_TEST})

source/dnode/mnode/impl/inc/mndDef.h

@@ -633,18 +633,19 @@ static FORCE_INLINE void tDeleteSMqSubscribeObj(SMqSubscribeObj* pSub) {
 }
 
 typedef struct {
-  char     name[TSDB_TOPIC_FNAME_LEN];
-  char     db[TSDB_DB_FNAME_LEN];
-  int64_t  createTime;
-  int64_t  updateTime;
-  int64_t  uid;
-  int64_t  dbUid;
-  int32_t  version;
-  SRWLatch lock;
-  int32_t  sqlLen;
-  char*    sql;
-  char*    logicalPlan;
-  char*    physicalPlan;
+  char           name[TSDB_TOPIC_FNAME_LEN];
+  char           db[TSDB_DB_FNAME_LEN];
+  int64_t        createTime;
+  int64_t        updateTime;
+  int64_t        uid;
+  int64_t        dbUid;
+  int32_t        version;
+  SRWLatch       lock;
+  int32_t        sqlLen;
+  char*          sql;
+  char*          logicalPlan;
+  char*          physicalPlan;
+  SSchemaWrapper schema;
 } SMqTopicObj;
 
 typedef struct {
@@ -733,12 +734,12 @@ typedef struct {
   int8_t   sourceType;
   int8_t   sinkType;
   // int32_t  sqlLen;
-  int32_t sinkVgId;  // 0 for automatic
-  char*   sql;
-  char*   logicalPlan;
-  char*   physicalPlan;
-  SArray* tasks;     // SArray<SArray<SStreamTask>>
-  SArray* ColAlias;  // SArray<char*>
+  int32_t        sinkVgId;  // 0 for automatic
+  char*          sql;
+  char*          logicalPlan;
+  char*          physicalPlan;
+  SArray*        tasks;  // SArray<SArray<SStreamTask>>
+  SSchemaWrapper outputSchema;
 } SStreamObj;
 
 int32_t tEncodeSStreamObj(SCoder* pEncoder, const SStreamObj* pObj);

source/dnode/mnode/impl/inc/mndInt.h

@@ -59,6 +59,8 @@ typedef struct SMnodeLoad {
   int64_t compStorage;
 } SMnodeLoad;
 
+typedef struct SQWorkerMgmt SQHandle;
+
 typedef struct {
   const char  *name;
   MndInitFp    initFp;
@@ -112,6 +114,7 @@ typedef struct SMnode {
   SSdb             *pSdb;
   SMgmtWrapper     *pWrapper;
   SArray           *pSteps;
+  SQHandle         *pQuery;
   SShowMgmt         showMgmt;
   SProfileMgmt      profileMgmt;
   STelemMgmt        telemMgmt;
@@ -119,7 +122,7 @@ typedef struct SMnode {
   SHashObj         *infosMeta;
   SGrantInfo        grant;
   MndMsgFp          msgFp[TDMT_MAX];
-  SMsgCb            msgCb;
+  SMsgCb            msgCb;  
 } SMnode;
 
 void    mndSetMsgHandle(SMnode *pMnode, tmsg_t msgType, MndMsgFp fp);

source/client/stream/stream.c → source/dnode/mnode/impl/inc/mndQuery.h

@@ -11,4 +11,23 @@
  *
  * You should have received a copy of the GNU Affero General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
+ */
\ No newline at end of file
+
+#ifndef _TD_MND_QUERY_H_
+#define _TD_MND_QUERY_H_
+
+#include "mndInt.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int32_t  mndInitQuery(SMnode *pMnode);
+void     mndCleanupQuery(SMnode *pMnode);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /*_TD_MND_QUERY_H_*/

source/dnode/mnode/impl/src/mndDb.c

@@ -1034,7 +1034,9 @@ static int32_t mndProcessUseDbReq(SNodeMsg *pReq) {
       usedbRsp.vgVersion = usedbReq.vgVersion;
       code = 0;
     }
-    usedbRsp.vgNum = taosArrayGetSize(usedbRsp.pVgroupInfos);    
+    usedbRsp.vgNum = taosArrayGetSize(usedbRsp.pVgroupInfos);  
+
+    // no jump, need to construct rsp
   } else {
     pDb = mndAcquireDb(pMnode, usedbReq.db);
     if (pDb == NULL) {

source/dnode/mnode/impl/src/mndDef.c

@@ -17,7 +17,7 @@
 
 int32_t tEncodeSStreamObj(SCoder *pEncoder, const SStreamObj *pObj) {
   int32_t sz = 0;
-  int32_t outputNameSz = 0;
+  /*int32_t outputNameSz = 0;*/
   if (tEncodeCStr(pEncoder, pObj->name) < 0) return -1;
   if (tEncodeCStr(pEncoder, pObj->db) < 0) return -1;
   if (tEncodeI64(pEncoder, pObj->createTime) < 0) return -1;
@@ -45,6 +45,9 @@ int32_t tEncodeSStreamObj(SCoder *pEncoder, const SStreamObj *pObj) {
     }
   }
 
+  if (tEncodeSSchemaWrapper(pEncoder, &pObj->outputSchema) < 0) return -1;
+
+#if 0
   if (pObj->ColAlias != NULL) {
     outputNameSz = taosArrayGetSize(pObj->ColAlias);
   }
@@ -53,6 +56,7 @@ int32_t tEncodeSStreamObj(SCoder *pEncoder, const SStreamObj *pObj) {
     char *name = taosArrayGetP(pObj->ColAlias, i);
     if (tEncodeCStr(pEncoder, name) < 0) return -1;
   }
+#endif
   return pEncoder->pos;
 }
 
@@ -85,6 +89,9 @@ int32_t tDecodeSStreamObj(SCoder *pDecoder, SStreamObj *pObj) {
       taosArrayPush(pObj->tasks, pArray);
     }
   }
+
+  if (tDecodeSSchemaWrapper(pDecoder, &pObj->outputSchema) < 0) return -1;
+#if 0
   int32_t outputNameSz;
   if (tDecodeI32(pDecoder, &outputNameSz) < 0) return -1;
   if (outputNameSz != 0) {
@@ -98,5 +105,6 @@ int32_t tDecodeSStreamObj(SCoder *pDecoder, SStreamObj *pObj) {
     if (tDecodeCStrAlloc(pDecoder, &name) < 0) return -1;
     taosArrayPush(pObj->ColAlias, &name);
   }
+#endif
   return 0;
 }

source/dnode/mnode/impl/src/mndDnode.c

@@ -277,8 +277,8 @@ static int32_t mndCheckClusterCfgPara(SMnode *pMnode, const SClusterCfg *pCfg) {
     return DND_REASON_STATUS_INTERVAL_NOT_MATCH;
   }
 
-  if ((0 != strcasecmp(pCfg->timezone, tsTimezone)) && (pMnode->checkTime != pCfg->checkTime)) {
-    mError("timezone [%s - %s] [%" PRId64 " - %" PRId64 "] cfg inconsistent", pCfg->timezone, tsTimezone,
+  if ((0 != strcasecmp(pCfg->timezone, tsTimezoneStr)) && (pMnode->checkTime != pCfg->checkTime)) {
+    mError("timezone [%s - %s] [%" PRId64 " - %" PRId64 "] cfg inconsistent", pCfg->timezone, tsTimezoneStr,
            pCfg->checkTime, pMnode->checkTime);
     return DND_REASON_TIME_ZONE_NOT_MATCH;
   }
@@ -677,7 +677,7 @@ static int32_t mndRetrieveConfigs(SNodeMsg *pReq, SShowObj *pShow, char *data, i
   totalRows++;
 
   cfgOpts[totalRows] = "timezone";
-  snprintf(cfgVals[totalRows], TSDB_CONIIG_VALUE_LEN, "%s", tsTimezone);
+  snprintf(cfgVals[totalRows], TSDB_CONIIG_VALUE_LEN, "%s", tsTimezoneStr);
   totalRows++;
 
   cfgOpts[totalRows] = "locale";

source/dnode/mnode/impl/src/mndInfoSchema.c

@@ -19,6 +19,7 @@
 #define SYSTABLE_SCH_TABLE_NAME_LEN ((TSDB_TABLE_NAME_LEN - 1) + VARSTR_HEADER_SIZE)
 #define SYSTABLE_SCH_DB_NAME_LEN    ((TSDB_DB_NAME_LEN - 1) + VARSTR_HEADER_SIZE)
 
+//!!!! Note: only APPEND columns in below tables, NO insert !!!!
 static const SInfosTableSchema dnodesSchema[] = {{.name = "id",             .bytes = 2,   .type = TSDB_DATA_TYPE_SMALLINT},
                                                  {.name = "endpoint",       .bytes = TSDB_EP_LEN + VARSTR_HEADER_SIZE, .type = TSDB_DATA_TYPE_BINARY},
                                                  {.name = "vnodes",         .bytes = 2,   .type = TSDB_DATA_TYPE_SMALLINT},

source/dnode/mnode/impl/src/mndQuery.c

+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "mndQuery.h"
+#include "mndMnode.h"
+#include "executor.h"
+#include "qworker.h"
+
+int32_t mndProcessQueryMsg(SNodeMsg *pReq) {
+  mTrace("message in query queue is processing");
+  SMnode *pMnode = pReq->pNode;
+  SReadHandle handle = {0};
+
+  switch (pReq->rpcMsg.msgType) {
+    case TDMT_VND_QUERY:
+      return qWorkerProcessQueryMsg(&handle, pMnode->pQuery, &pReq->rpcMsg);
+    case TDMT_VND_QUERY_CONTINUE:
+      return qWorkerProcessCQueryMsg(&handle, pMnode->pQuery, &pReq->rpcMsg);
+    default:
+      mError("unknown msg type:%d in query queue", pReq->rpcMsg.msgType);
+      return TSDB_CODE_VND_APP_ERROR;
+  }
+}
+
+int32_t mndProcessFetchMsg(SNodeMsg *pReq) {
+  mTrace("message in fetch queue is processing");
+  SMnode *pMnode = pReq->pNode;
+  
+  switch (pReq->rpcMsg.msgType) {
+    case TDMT_VND_FETCH:
+      return qWorkerProcessFetchMsg(pMnode, pMnode->pQuery, &pReq->rpcMsg);
+    case TDMT_VND_DROP_TASK:
+      return qWorkerProcessDropMsg(pMnode, pMnode->pQuery, &pReq->rpcMsg);
+    case TDMT_VND_QUERY_HEARTBEAT:
+      return qWorkerProcessHbMsg(pMnode, pMnode->pQuery, &pReq->rpcMsg);
+    default:
+      mError("unknown msg type:%d in fetch queue", pReq->rpcMsg.msgType);
+      return TSDB_CODE_VND_APP_ERROR;
+  }
+}
+
+int32_t mndInitQuery(SMnode *pMnode) {
+  int32_t code = qWorkerInit(NODE_TYPE_MNODE, MND_VGID, NULL, (void **)&pMnode->pQuery, &pMnode->msgCb);
+  if (code) {
+    return code;
+  }
+
+  mndSetMsgHandle(pMnode, TDMT_VND_QUERY, mndProcessQueryMsg);
+  mndSetMsgHandle(pMnode, TDMT_VND_QUERY_CONTINUE, mndProcessQueryMsg);
+  mndSetMsgHandle(pMnode, TDMT_VND_FETCH, mndProcessFetchMsg);
+  mndSetMsgHandle(pMnode, TDMT_VND_DROP_TASK, mndProcessFetchMsg);
+  mndSetMsgHandle(pMnode, TDMT_VND_QUERY_HEARTBEAT, mndProcessFetchMsg);
+
+  return 0;
+}
+
+void mndCleanupQuery(SMnode *pMnode) { qWorkerDestroy((void **)&pMnode->pQuery); }
+

source/dnode/mnode/impl/src/mndScheduler.c

@@ -66,8 +66,11 @@ int32_t mndPersistTaskDeployReq(STrans* pTrans, SStreamTask* pTask, const SEpSet
 
 int32_t mndAssignTaskToVg(SMnode* pMnode, STrans* pTrans, SStreamTask* pTask, SSubplan* plan, const SVgObj* pVgroup) {
   int32_t msgLen;
+  pTask->nodeId = pVgroup->vgId;
+  pTask->epSet = mndGetVgroupEpset(pMnode, pVgroup);
+
   plan->execNode.nodeId = pVgroup->vgId;
-  plan->execNode.epSet = mndGetVgroupEpset(pMnode, pVgroup);
+  plan->execNode.epSet = pTask->epSet;
 
   if (qSubPlanToString(plan, &pTask->exec.qmsg, &msgLen) < 0) {
     terrno = TSDB_CODE_QRY_INVALID_INPUT;
@@ -86,8 +89,12 @@ SSnodeObj* mndSchedFetchSnode(SMnode* pMnode) {
 int32_t mndAssignTaskToSnode(SMnode* pMnode, STrans* pTrans, SStreamTask* pTask, SSubplan* plan,
                              const SSnodeObj* pSnode) {
   int32_t msgLen;
-  plan->execNode.nodeId = pSnode->id;
-  plan->execNode.epSet = mndAcquireEpFromSnode(pMnode, pSnode);
+
+  pTask->nodeId = 0;
+  pTask->epSet = mndAcquireEpFromSnode(pMnode, pSnode);
+
+  plan->execNode.nodeId = 0;
+  plan->execNode.epSet = pTask->epSet;
 
   if (qSubPlanToString(plan, &pTask->exec.qmsg, &msgLen) < 0) {
     terrno = TSDB_CODE_QRY_INVALID_INPUT;
@@ -97,9 +104,23 @@ int32_t mndAssignTaskToSnode(SMnode* pMnode, STrans* pTrans, SStreamTask* pTask,
   return 0;
 }
 
+SVgObj* mndSchedFetchOneVg(SMnode* pMnode, int64_t dbUid) {
+  void*   pIter = NULL;
+  SVgObj* pVgroup = NULL;
+  while (1) {
+    pIter = sdbFetch(pMnode->pSdb, SDB_VGROUP, pIter, (void**)&pVgroup);
+    if (pIter == NULL) break;
+    if (pVgroup->dbUid != dbUid) {
+      sdbRelease(pMnode->pSdb, pVgroup);
+      continue;
+    }
+    return pVgroup;
+  }
+  return pVgroup;
+}
+
 int32_t mndScheduleStream(SMnode* pMnode, STrans* pTrans, SStreamObj* pStream) {
   SSdb*       pSdb = pMnode->pSdb;
-  SVgObj*     pVgroup = NULL;
   SQueryPlan* pPlan = qStringToQueryPlan(pStream->physicalPlan);
   if (pPlan == NULL) {
     terrno = TSDB_CODE_QRY_INVALID_INPUT;
@@ -108,80 +129,144 @@ int32_t mndScheduleStream(SMnode* pMnode, STrans* pTrans, SStreamObj* pStream) {
   ASSERT(pStream->vgNum == 0);
 
   int32_t totLevel = LIST_LENGTH(pPlan->pSubplans);
-  pStream->tasks = taosArrayInit(totLevel, sizeof(SArray));
-  int32_t lastUsedVgId = 0;
+  ASSERT(totLevel <= 2);
+  pStream->tasks = taosArrayInit(totLevel, sizeof(void*));
 
-  // gather vnodes
-  // gather snodes
-  // iterate plan, expand source to vnodes and assign ep to each task
-  // iterate tasks, assign sink type and sink ep to each task
-
-  for (int32_t revLevel = totLevel - 1; revLevel >= 0; revLevel--) {
-    int32_t        level = totLevel - 1 - revLevel;
-    SArray*        taskOneLevel = taosArrayInit(0, sizeof(SStreamTask));
-    SNodeListNode* inner = nodesListGetNode(pPlan->pSubplans, revLevel);
-    int32_t        opNum = LIST_LENGTH(inner->pNodeList);
-    ASSERT(opNum == 1);
+  for (int32_t level = 0; level < totLevel; level++) {
+    SArray*        taskOneLevel = taosArrayInit(0, sizeof(void*));
+    SNodeListNode* inner = nodesListGetNode(pPlan->pSubplans, level);
+    ASSERT(LIST_LENGTH(inner->pNodeList) == 1);
 
     SSubplan* plan = nodesListGetNode(inner->pNodeList, 0);
-    if (level == 0) {
+
+    // if (level == totLevel - 1 /* or no snode */) {
+    if (level == totLevel - 1) {
+      // last level, source, must assign to vnode
+      // must be scan type
       ASSERT(plan->subplanType == SUBPLAN_TYPE_SCAN);
+
+      // replicate task to each vnode
       void* pIter = NULL;
       while (1) {
+        SVgObj* pVgroup;
         pIter = sdbFetch(pSdb, SDB_VGROUP, pIter, (void**)&pVgroup);
         if (pIter == NULL) break;
         if (pVgroup->dbUid != pStream->dbUid) {
           sdbRelease(pSdb, pVgroup);
           continue;
         }
+        SStreamTask* pTask = tNewSStreamTask(pStream->uid);
+        // source part
+        pTask->sourceType = TASK_SOURCE__SCAN;
 
-        lastUsedVgId = pVgroup->vgId;
-        pStream->vgNum++;
+        // sink part
+        if (level == 0) {
+          // only for inplace
+          pTask->sinkType = TASK_SINK__SHOW;
+          pTask->showSink.reserved = 0;
+        } else {
+          pTask->sinkType = TASK_SINK__NONE;
+        }
 
-        SStreamTask* pTask = tNewSStreamTask(pStream->uid);
-        /*pTask->level = level;*/
-        // TODO
-        /*pTask->sourceType = STREAM_SOURCE__SUPER;*/
-        /*pTask->sinkType = level == totLevel - 1 ? 1 : 0;*/
+        // dispatch part
+        if (level == 0) {
+          pTask->dispatchType = TASK_DISPATCH__NONE;
+          // if inplace sink, no dispatcher
+          // if fixed ep, add fixed ep dispatcher
+          // if shuffle, add shuffle dispatcher
+        } else {
+          // add fixed ep dispatcher
+          int32_t lastLevel = level - 1;
+          ASSERT(lastLevel == 0);
+          SArray* pArray = taosArrayGetP(pStream->tasks, lastLevel);
+          // one merge only
+          ASSERT(taosArrayGetSize(pArray) == 1);
+          SStreamTask* lastLevelTask = taosArrayGetP(pArray, lastLevel);
+          pTask->dispatchMsgType = TDMT_VND_TASK_MERGE_EXEC;
+          pTask->dispatchType = TASK_DISPATCH__FIXED;
+
+          pTask->fixedEpDispatcher.nodeId = lastLevelTask->nodeId;
+          pTask->fixedEpDispatcher.epSet = lastLevelTask->epSet;
+        }
+
+        // exec part
+        pTask->execType = TASK_EXEC__PIPE;
         pTask->exec.parallelizable = 1;
         if (mndAssignTaskToVg(pMnode, pTrans, pTask, plan, pVgroup) < 0) {
           sdbRelease(pSdb, pVgroup);
           qDestroyQueryPlan(pPlan);
           return -1;
         }
-        taosArrayPush(taskOneLevel, pTask);
+        sdbRelease(pSdb, pVgroup);
+        taosArrayPush(taskOneLevel, &pTask);
       }
     } else {
+      // merge plan
+
+      // TODO if has snode, assign to snode
+
+      // else, assign to vnode
+      ASSERT(plan->subplanType == SUBPLAN_TYPE_MERGE);
       SStreamTask* pTask = tNewSStreamTask(pStream->uid);
-      /*pTask->level = level;*/
-      /*pTask->sourceType = STREAM_SOURCE__NONE;*/
-      /*pTask->sinkType = level == totLevel - 1 ? 1 : 0;*/
-      pTask->exec.parallelizable = plan->subplanType == SUBPLAN_TYPE_SCAN;
-
-      SSnodeObj* pSnode = mndSchedFetchSnode(pMnode);
-      if (pSnode == NULL || tsStreamSchedV) {
-        ASSERT(lastUsedVgId != 0);
-        SVgObj* pVg = mndAcquireVgroup(pMnode, lastUsedVgId);
-        if (mndAssignTaskToVg(pMnode, pTrans, pTask, plan, pVg) < 0) {
-          sdbRelease(pSdb, pVg);
-          qDestroyQueryPlan(pPlan);
-          return -1;
-        }
-        sdbRelease(pSdb, pVg);
-      } else {
-        if (mndAssignTaskToSnode(pMnode, pTrans, pTask, plan, pSnode) < 0) {
-          sdbRelease(pSdb, pSnode);
-          qDestroyQueryPlan(pPlan);
-          return -1;
-        }
+
+      // source part, currently only support multi source
+      pTask->sourceType = TASK_SOURCE__PIPE;
+
+      // sink part
+      pTask->sinkType = TASK_SINK__SHOW;
+      /*pTask->sinkType = TASK_SINK__NONE;*/
+
+      // dispatch part
+      pTask->dispatchType = TASK_DISPATCH__SHUFFLE;
+      pTask->dispatchMsgType = TDMT_VND_TASK_WRITE_EXEC;
+
+      // exec part
+      pTask->execType = TASK_EXEC__MERGE;
+      pTask->exec.parallelizable = 0;
+      SVgObj* pVgroup = mndSchedFetchOneVg(pMnode, pStream->dbUid);
+      ASSERT(pVgroup);
+      if (mndAssignTaskToVg(pMnode, pTrans, pTask, plan, pVgroup) < 0) {
+        sdbRelease(pSdb, pVgroup);
+        qDestroyQueryPlan(pPlan);
+        return -1;
+      }
+      sdbRelease(pSdb, pVgroup);
+      taosArrayPush(taskOneLevel, &pTask);
+    }
+
+    taosArrayPush(pStream->tasks, &taskOneLevel);
+  }
+
+  if (totLevel == 2) {
+    void* pIter = NULL;
+    while (1) {
+      SVgObj* pVgroup;
+      pIter = sdbFetch(pSdb, SDB_VGROUP, pIter, (void**)&pVgroup);
+      if (pIter == NULL) break;
+      if (pVgroup->dbUid != pStream->dbUid) {
+        sdbRelease(pSdb, pVgroup);
+        continue;
       }
-      sdbRelease(pMnode->pSdb, pSnode);
+      SStreamTask* pTask = tNewSStreamTask(pStream->uid);
 
-      taosArrayPush(taskOneLevel, pTask);
+      // source part
+      pTask->sourceType = TASK_SOURCE__MERGE;
+
+      // sink part
+      pTask->sinkType = TASK_SINK__SHOW;
+
+      // dispatch part
+      pTask->dispatchType = TASK_DISPATCH__NONE;
+
+      // exec part
+      pTask->execType = TASK_EXEC__NONE;
+      pTask->exec.parallelizable = 0;
     }
-    taosArrayPush(pStream->tasks, taskOneLevel);
   }
+
+  // free memory
   qDestroyQueryPlan(pPlan);
+
   return 0;
 }
 

source/dnode/mnode/impl/src/mndShow.c

@@ -357,6 +357,13 @@ static int32_t mndProcessRetrieveSysTableReq(SNodeMsg *pReq) {
   // if free flag is set, client wants to clean the resources
   if ((retrieveReq.free & TSDB_QUERY_TYPE_FREE_RESOURCE) != TSDB_QUERY_TYPE_FREE_RESOURCE) {
     rowsRead = (*retrieveFp)(pReq, (SShowObj*) pShow, pRsp->data, rowsToRead);
+    if (rowsRead < 0) {
+      terrno = rowsRead;
+      rpcFreeCont(pRsp);
+      mDebug("show:0x%" PRIx64 ", retrieve completed", pShow->id);
+      mndReleaseShowObj((SShowObj*) pShow, true);
+      return -1;
+    }
   }
 
   mDebug("show:0x%" PRIx64 ", stop retrieve data, rowsRead:%d rowsToRead:%d", pShow->id, rowsRead, rowsToRead);

source/dnode/mnode/impl/src/mndStb.c

@@ -1613,7 +1613,7 @@ static int32_t mndRetrieveStb(SNodeMsg *pReq, SShowObj *pShow, char *data, int32
   SDbObj* pDb = NULL;
   if (strlen(pShow->db) > 0) {
     pDb = mndAcquireDb(pMnode, pShow->db);
-    if (pDb == NULL) return 0;
+    if (pDb == NULL) return terrno;
   }
 
   while (numOfRows < rows) {

source/dnode/mnode/impl/src/mndStream.c

@@ -14,7 +14,6 @@
  */
 
 #include "mndStream.h"
-#include "parser.h"
 #include "mndAuth.h"
 #include "mndDb.h"
 #include "mndDnode.h"
@@ -26,6 +25,7 @@
 #include "mndTrans.h"
 #include "mndUser.h"
 #include "mndVgroup.h"
+#include "parser.h"
 #include "tname.h"
 
 #define MND_STREAM_VER_NUMBER   1
@@ -248,23 +248,22 @@ static int32_t mndStreamGetPlanString(const char *ast, char **pStr) {
 
 int32_t mndAddStreamToTrans(SMnode *pMnode, SStreamObj *pStream, const char *ast, STrans *pTrans) {
   SNode *pAst = NULL;
-#if 1 // TODO: remove debug info later
-  printf("ast = %s\n", ast); 
-#endif
+
   if (nodesStringToNode(ast, &pAst) < 0) {
     return -1;
   }
-#if 1
-  SSchemaWrapper sw = {0};
-  qExtractResultSchema(pAst, (int32_t*)&sw.nCols, &sw.pSchema);
 
+  if (qExtractResultSchema(pAst, (int32_t *)&pStream->outputSchema.nCols, &pStream->outputSchema.pSchema) != 0) {
+    return -1;
+  }
+
+#if 1
   printf("|");
-  for (int i = 0; i < sw.nCols; i++) {
-    printf(" %15s |", (char *)sw.pSchema[i].name);
+  for (int i = 0; i < pStream->outputSchema.nCols; i++) {
+    printf(" %15s |", (char *)pStream->outputSchema.pSchema[i].name);
   }
   printf("\n=======================================================\n");
 
-  pStream->ColAlias = NULL;
 #endif
 
   if (TSDB_CODE_SUCCESS != mndStreamGetPlanString(ast, &pStream->physicalPlan)) {

source/dnode/mnode/impl/src/mndTopic.c

@@ -23,6 +23,7 @@
 #include "mndTrans.h"
 #include "mndUser.h"
 #include "mndVgroup.h"
+#include "parser.h"
 #include "tname.h"
 
 #define MND_TOPIC_VER_NUMBER   1
@@ -85,6 +86,16 @@ SSdbRaw *mndTopicActionEncode(SMqTopicObj *pTopic) {
   SDB_SET_INT32(pRaw, dataPos, physicalPlanLen, TOPIC_ENCODE_OVER);
   SDB_SET_BINARY(pRaw, dataPos, pTopic->physicalPlan, physicalPlanLen, TOPIC_ENCODE_OVER);
 
+  int32_t swLen = taosEncodeSSchemaWrapper(NULL, &pTopic->schema);
+  void   *swBuf = taosMemoryMalloc(swLen);
+  if (swBuf == NULL) {
+    goto TOPIC_ENCODE_OVER;
+  }
+  void *aswBuf = swBuf;
+  taosEncodeSSchemaWrapper(&aswBuf, &pTopic->schema);
+  SDB_SET_INT32(pRaw, dataPos, swLen, TOPIC_ENCODE_OVER);
+  SDB_SET_BINARY(pRaw, dataPos, swBuf, swLen, TOPIC_ENCODE_OVER);
+
   SDB_SET_RESERVE(pRaw, dataPos, MND_TOPIC_RESERVE_SIZE, TOPIC_ENCODE_OVER);
   SDB_SET_DATALEN(pRaw, dataPos, TOPIC_ENCODE_OVER);
 
@@ -149,6 +160,17 @@ SSdbRow *mndTopicActionDecode(SSdbRaw *pRaw) {
   }
   SDB_GET_BINARY(pRaw, dataPos, pTopic->physicalPlan, len, TOPIC_DECODE_OVER);
 
+  SDB_GET_INT32(pRaw, dataPos, &len, TOPIC_DECODE_OVER);
+  void *buf = taosMemoryMalloc(len);
+  if (buf == NULL) {
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
+    goto TOPIC_DECODE_OVER;
+  }
+  SDB_GET_BINARY(pRaw, dataPos, buf, len, TOPIC_DECODE_OVER);
+  if (taosDecodeSSchemaWrapper(buf, &pTopic->schema) == NULL) {
+    goto TOPIC_DECODE_OVER;
+  }
+
   SDB_GET_RESERVE(pRaw, dataPos, MND_TOPIC_RESERVE_SIZE, TOPIC_DECODE_OVER);
 
   terrno = TSDB_CODE_SUCCESS;
@@ -283,6 +305,14 @@ static int32_t mndCreateTopic(SMnode *pMnode, SNodeMsg *pReq, SCMCreateTopicReq
     topicObj.physicalPlan = pPlanStr;
   }
 
+  SNode *pAst = NULL;
+  if (nodesStringToNode(pCreate->ast, &pAst) < 0) {
+    return -1;
+  }
+  if (qExtractResultSchema(pAst, &topicObj.schema.nCols, &topicObj.schema.pSchema) != 0) {
+    return -1;
+  }
+
   STrans *pTrans = mndTransCreate(pMnode, TRN_POLICY_ROLLBACK, TRN_TYPE_CREATE_TOPIC, &pReq->rpcMsg);
   if (pTrans == NULL) {
     mError("topic:%s, failed to create since %s", pCreate->name, terrstr());

source/dnode/mnode/impl/src/mnode.c

@@ -39,6 +39,7 @@
 #include "mndTrans.h"
 #include "mndUser.h"
 #include "mndVgroup.h"
+#include "mndQuery.h"
 
 #define MQ_TIMER_MS    3000
 #define TRNAS_TIMER_MS 6000
@@ -79,7 +80,7 @@ static void mndCalMqRebalance(void *param, void *tmrId) {
         .pCont = pReq,
         .contLen = contLen,
     };
-    tmsgPutToQueue(&pMnode->msgCb, QUERY_QUEUE, &rpcMsg);
+    tmsgPutToQueue(&pMnode->msgCb, READ_QUEUE, &rpcMsg);
   }
 
   taosTmrReset(mndCalMqRebalance, MQ_TIMER_MS, pMnode, pMnode->timer, &pMnode->mqTimer);
@@ -91,7 +92,7 @@ static void mndPullupTelem(void *param, void *tmrId) {
     int32_t contLen = 0;
     void   *pReq = mndBuildTimerMsg(&contLen);
     SRpcMsg rpcMsg = {.msgType = TDMT_MND_TELEM_TIMER, .pCont = pReq, .contLen = contLen};
-    tmsgPutToQueue(&pMnode->msgCb, QUERY_QUEUE, &rpcMsg);
+    tmsgPutToQueue(&pMnode->msgCb, READ_QUEUE, &rpcMsg);
   }
 
   taosTmrReset(mndPullupTelem, TELEM_TIMER_MS, pMnode, pMnode->timer, &pMnode->telemTimer);
@@ -217,6 +218,7 @@ static int32_t mndInitSteps(SMnode *pMnode) {
   // if (mndAllocStep(pMnode, "mnode-timer", mndInitTimer, NULL) != 0) return -1;
   if (mndAllocStep(pMnode, "mnode-profile", mndInitProfile, mndCleanupProfile) != 0) return -1;
   if (mndAllocStep(pMnode, "mnode-show", mndInitShow, mndCleanupShow) != 0) return -1;
+  if (mndAllocStep(pMnode, "mnode-query", mndInitQuery, mndCleanupQuery) != 0) return -1;
   if (mndAllocStep(pMnode, "mnode-sync", mndInitSync, mndCleanupSync) != 0) return -1;
   if (mndAllocStep(pMnode, "mnode-telem", mndInitTelem, mndCleanupTelem) != 0) return -1;
   if (mndAllocStep(pMnode, "mnode-timer", NULL, mndCleanupTimer) != 0) return -1;

source/dnode/vnode/src/tq/tq.c

@@ -14,12 +14,11 @@
  */
 
 #include "tcompare.h"
+#include "tdatablock.h"
 #include "tqInt.h"
 #include "tqMetaStore.h"
 #include "tstream.h"
 
-void blockDebugShowData(SArray* dataBlocks);
-
 int32_t tqInit() { return tqPushMgrInit(); }
 
 void tqCleanUp() { tqPushMgrCleanUp(); }
@@ -445,18 +444,19 @@ int32_t tqExpandTask(STQ* pTq, SStreamTask* pTask, int32_t parallel) {
   if (pTask->execType == TASK_EXEC__NONE) return 0;
 
   pTask->exec.numOfRunners = parallel;
+  pTask->exec.runners = taosMemoryCalloc(parallel, sizeof(SStreamRunner));
+  if (pTask->exec.runners == NULL) {
+    return -1;
+  }
   for (int32_t i = 0; i < parallel; i++) {
     STqReadHandle* pReadHandle = tqInitSubmitMsgScanner(pTq->pVnodeMeta);
     SReadHandle    handle = {
            .reader = pReadHandle,
            .meta = pTq->pVnodeMeta,
     };
-    pTask->exec.runners = taosMemoryCalloc(parallel, sizeof(SStreamRunner));
-    if (pTask->exec.runners == NULL) {
-      return -1;
-    }
     pTask->exec.runners[i].inputHandle = pReadHandle;
     pTask->exec.runners[i].executor = qCreateStreamExecTaskInfo(pTask->exec.qmsg, &handle);
+    ASSERT(pTask->exec.runners[i].executor);
   }
   return 0;
 }
@@ -473,7 +473,10 @@ int32_t tqProcessTaskDeploy(STQ* pTq, char* msg, int32_t msgLen) {
   }
   tCoderClear(&decoder);
 
-  tqExpandTask(pTq, pTask, 8);
+  if (tqExpandTask(pTq, pTask, 4) < 0) {
+    ASSERT(0);
+  }
+
   taosHashPut(pTq->pStreamTasks, &pTask->taskId, sizeof(int32_t), pTask, sizeof(SStreamTask));
 
   return 0;

source/dnode/vnode/src/vnd/vnodeQuery.c

@@ -31,9 +31,8 @@ int vnodeProcessQueryMsg(SVnode *pVnode, SRpcMsg *pMsg) {
   SReadHandle handle = {.reader = pVnode->pTsdb, .meta = pVnode->pMeta, .config = &pVnode->config};
 
   switch (pMsg->msgType) {
-    case TDMT_VND_QUERY: {
+    case TDMT_VND_QUERY:
       return qWorkerProcessQueryMsg(&handle, pVnode->pQuery, pMsg);
-    }
     case TDMT_VND_QUERY_CONTINUE:
       return qWorkerProcessCQueryMsg(&handle, pVnode->pQuery, pMsg);
     default:
@@ -205,7 +204,7 @@ _exit:
 
   rpcSendResponse(&rpcMsg);
 
-  return code;
+  return TSDB_CODE_SUCCESS;
 }
 
 static void freeItemHelper(void *pItem) {

source/dnode/vnode/src/vnd/vnodeWrite.c

@@ -187,7 +187,7 @@ int vnodeApplyWMsg(SVnode *pVnode, SRpcMsg *pMsg, SRpcMsg **pRsp) {
       }
 
       // record current timezone of server side
-      tstrncpy(vCreateSmaReq.tSma.timezone, tsTimezone, TD_TIMEZONE_LEN);
+      tstrncpy(vCreateSmaReq.tSma.timezone, tsTimezoneStr, TD_TIMEZONE_LEN);
 
       if (metaCreateTSma(pVnode->pMeta, &vCreateSmaReq) < 0) {
         // TODO: handle error

source/libs/catalog/src/catalog.c

@@ -406,9 +406,9 @@ _return:
 }
 
 
-int32_t ctgPushRmStbMsgInQueue(SCatalog* pCtg, const char *dbFName, int64_t dbId, const char *stbName, uint64_t suid) {
+int32_t ctgPushRmStbMsgInQueue(SCatalog* pCtg, const char *dbFName, int64_t dbId, const char *stbName, uint64_t suid, bool syncReq) {
   int32_t code = 0;
-  SCtgMetaAction action= {.act = CTG_ACT_REMOVE_STB};
+  SCtgMetaAction action= {.act = CTG_ACT_REMOVE_STB, .syncReq = syncReq};
   SCtgRemoveStbMsg *msg = taosMemoryMalloc(sizeof(SCtgRemoveStbMsg));
   if (NULL == msg) {
     ctgError("malloc %d failed", (int32_t)sizeof(SCtgRemoveStbMsg));
@@ -435,9 +435,9 @@ _return:
 
 
 
-int32_t ctgPushRmTblMsgInQueue(SCatalog* pCtg, const char *dbFName, int64_t dbId, const char *tbName) {
+int32_t ctgPushRmTblMsgInQueue(SCatalog* pCtg, const char *dbFName, int64_t dbId, const char *tbName, bool syncReq) {
   int32_t code = 0;
-  SCtgMetaAction action= {.act = CTG_ACT_REMOVE_TBL};
+  SCtgMetaAction action= {.act = CTG_ACT_REMOVE_TBL, .syncReq = syncReq};
   SCtgRemoveTblMsg *msg = taosMemoryMalloc(sizeof(SCtgRemoveTblMsg));
   if (NULL == msg) {
     ctgError("malloc %d failed", (int32_t)sizeof(SCtgRemoveTblMsg));
@@ -496,7 +496,7 @@ _return:
 
 int32_t ctgPushUpdateTblMsgInQueue(SCatalog* pCtg, STableMetaOutput *output, bool syncReq) {
   int32_t code = 0;
-  SCtgMetaAction action= {.act = CTG_ACT_UPDATE_TBL};
+  SCtgMetaAction action= {.act = CTG_ACT_UPDATE_TBL, .syncReq = syncReq};
   SCtgUpdateTblMsg *msg = taosMemoryMalloc(sizeof(SCtgUpdateTblMsg));
   if (NULL == msg) {
     ctgError("malloc %d failed", (int32_t)sizeof(SCtgUpdateTblMsg));
@@ -1843,6 +1843,7 @@ int32_t ctgRefreshTblMeta(SCatalog* pCtg, void *pTrans, const SEpSet* pMgmtEps,
 
   if (CTG_IS_META_NULL(output->metaType)) {
     ctgError("no tbmeta got, tbNmae:%s", tNameGetTableName(pTableName));
+    catalogRemoveTableMeta(pCtg, pTableName);
     CTG_ERR_JRET(CTG_ERR_CODE_TABLE_NOT_EXIST);
   }
 
@@ -1951,9 +1952,9 @@ _return:
     }
 
     if (TSDB_SUPER_TABLE == tbType) {
-      ctgPushRmStbMsgInQueue(pCtg, dbFName, dbId, pTableName->tname, suid);
+      ctgPushRmStbMsgInQueue(pCtg, dbFName, dbId, pTableName->tname, suid, false);
     } else {
-      ctgPushRmTblMsgInQueue(pCtg, dbFName, dbId, pTableName->tname);
+      ctgPushRmTblMsgInQueue(pCtg, dbFName, dbId, pTableName->tname, false);
     }
   }
 
@@ -2534,7 +2535,7 @@ int32_t catalogUpdateVgEpSet(SCatalog* pCtg, const char* dbFName, int32_t vgId,
 
 }
 
-int32_t catalogRemoveTableMeta(SCatalog* pCtg, SName* pTableName) {
+int32_t catalogRemoveTableMeta(SCatalog* pCtg, const SName* pTableName) {
   CTG_API_ENTER();
 
   int32_t code = 0;
@@ -2561,9 +2562,9 @@ int32_t catalogRemoveTableMeta(SCatalog* pCtg, SName* pTableName) {
   tNameGetFullDbName(pTableName, dbFName);
   
   if (TSDB_SUPER_TABLE == tblMeta->tableType) {
-    CTG_ERR_JRET(ctgPushRmStbMsgInQueue(pCtg, dbFName, dbId, pTableName->tname, tblMeta->suid));
+    CTG_ERR_JRET(ctgPushRmStbMsgInQueue(pCtg, dbFName, dbId, pTableName->tname, tblMeta->suid, true));
   } else {
-    CTG_ERR_JRET(ctgPushRmTblMsgInQueue(pCtg, dbFName, dbId, pTableName->tname));
+    CTG_ERR_JRET(ctgPushRmTblMsgInQueue(pCtg, dbFName, dbId, pTableName->tname, true));
   }
 
  
@@ -2588,7 +2589,7 @@ int32_t catalogRemoveStbMeta(SCatalog* pCtg, const char* dbFName, uint64_t dbId,
     CTG_API_LEAVE(TSDB_CODE_SUCCESS);
   }
 
-  CTG_ERR_JRET(ctgPushRmStbMsgInQueue(pCtg, dbFName, dbId, stbName, suid));
+  CTG_ERR_JRET(ctgPushRmStbMsgInQueue(pCtg, dbFName, dbId, stbName, suid, true));
 
   CTG_API_LEAVE(TSDB_CODE_SUCCESS);
   

source/libs/executor/inc/executorimpl.h

@@ -415,6 +415,7 @@ typedef struct STableScanInfo {
   int32_t*        rowCellInfoOffset;
   SExprInfo*      pExpr;
   SSDataBlock     block;
+  SArray*         pColMatchInfo;
   int32_t         numOfOutput;
   int64_t         elapsedTime;
   int32_t         prevGroupId;  // previous table group id
@@ -449,6 +450,8 @@ typedef struct SSysTableScanInfo {
   SEpSet              epSet;
   tsem_t              ready;
 
+  int32_t             accountId;
+  bool                showRewrite;
   SNode*              pCondition; // db_name filter condition, to discard data that are not in current database
   void               *pCur;       // cursor for iterate the local table meta store.
   SArray             *scanCols;   // SArray<int16_t> scan column id list
@@ -646,8 +649,8 @@ typedef struct SDistinctOperatorInfo {
 } SDistinctOperatorInfo;
 
 SOperatorInfo* createExchangeOperatorInfo(const SNodeList* pSources, SSDataBlock* pBlock, SExecTaskInfo* pTaskInfo);
-SOperatorInfo* createTableScanOperatorInfo(void* pTsdbReadHandle, int32_t order, int32_t numOfOutput,
-                                           int32_t repeatTime, int32_t reverseTime, SExecTaskInfo* pTaskInfo);
+SOperatorInfo* createTableScanOperatorInfo(void* pTsdbReadHandle, int32_t order, int32_t numOfCols, int32_t repeatTime,
+                                           int32_t reverseTime, SArray* pColMatchInfo, SExecTaskInfo* pTaskInfo);
 SOperatorInfo* createAggregateOperatorInfo(SOperatorInfo* downstream, SExprInfo* pExprInfo, int32_t numOfCols, SSDataBlock* pResultBlock,
                                            SExecTaskInfo* pTaskInfo, const STableGroupInfo* pTableGroupInfo);
 SOperatorInfo* createMultiTableAggOperatorInfo(SOperatorInfo* downstream, SExprInfo* pExprInfo, int32_t numOfCols, SSDataBlock* pResBlock, SExecTaskInfo* pTaskInfo, const STableGroupInfo* pTableGroupInfo);
@@ -655,7 +658,7 @@ SOperatorInfo* createProjectOperatorInfo(SOperatorInfo* downstream, SExprInfo* p
 SOperatorInfo* createOrderOperatorInfo(SOperatorInfo* downstream, SExprInfo* pExprInfo, int32_t numOfCols, SArray* pOrderVal, SExecTaskInfo* pTaskInfo);
 SOperatorInfo* createSortedMergeOperatorInfo(SOperatorInfo** downstream, int32_t numOfDownstream, SExprInfo* pExprInfo, int32_t num, SArray* pOrderVal, SArray* pGroupInfo, SExecTaskInfo* pTaskInfo);
 SOperatorInfo* createSysTableScanOperatorInfo(void* pSysTableReadHandle, SSDataBlock* pResBlock, const SName* pName,
-                                              SNode* pCondition, SEpSet epset, SArray* colList, SExecTaskInfo* pTaskInfo);
+                                              SNode* pCondition, SEpSet epset, SArray* colList, SExecTaskInfo* pTaskInfo, bool showRewrite, int32_t accountId);
 SOperatorInfo* createLimitOperatorInfo(SOperatorInfo* downstream, SLimit* pLimit, SExecTaskInfo* pTaskInfo);
 
 SOperatorInfo* createIntervalOperatorInfo(SOperatorInfo* downstream, SExprInfo* pExprInfo, int32_t numOfCols, SSDataBlock* pResBlock, SInterval* pInterval,

source/libs/executor/src/executor.c

@@ -97,6 +97,8 @@ qTaskInfo_t qCreateStreamExecTaskInfo(void* msg, void* streamReadHandle) {
   pMsg->contentLen = pMsg->contentLen;
 #endif
 
+  qDebugL("stream task string %s", (const char*)msg);
+
   struct SSubplan* plan = NULL;
   int32_t          code = qStringToSubplan(msg, &plan);
   if (code != TSDB_CODE_SUCCESS) {

source/libs/executor/src/executorimpl.c

@@ -66,6 +66,11 @@ typedef enum SResultTsInterpType {
   RESULT_ROW_END_INTERP   = 2,
 } SResultTsInterpType;
 
+typedef struct SColMatchInfo {
+  int32_t colId;
+  int32_t targetSlotId;
+} SColMatchInfo;
+
 #if 0
 static UNUSED_FUNC void *u_malloc (size_t __size) {
   uint32_t v = taosRand();
@@ -2944,12 +2949,21 @@ int32_t loadDataBlock(SExecTaskInfo *pTaskInfo, STableScanInfo* pTableScanInfo,
 
   *status = BLK_DATA_ALL_NEEDED;
 
-  pBlock->pDataBlock = tsdbRetrieveDataBlock(pTableScanInfo->pTsdbReadHandle, NULL);
-  if (pBlock->pDataBlock == NULL) {
+  SArray* pCols = tsdbRetrieveDataBlock(pTableScanInfo->pTsdbReadHandle, NULL);
+  if (pCols == NULL) {
     return terrno;
-  } else {
-    return TSDB_CODE_SUCCESS;
   }
+
+    int32_t numOfCols = pBlock->info.numOfCols;
+    for(int32_t i = 0; i < numOfCols; ++i) {
+      SColumnInfoData* p = taosArrayGet(pCols, i);
+      SColMatchInfo* pColMatchInfo = taosArrayGet(pTableScanInfo->pColMatchInfo, i);
+      ASSERT(pColMatchInfo->colId == p->info.colId);
+
+      taosArraySet(pBlock->pDataBlock, pColMatchInfo->targetSlotId, p);
+    }
+
+    return TSDB_CODE_SUCCESS;
 }
 
 int32_t loadDataBlockOnDemand(SExecTaskInfo *pTaskInfo, STableScanInfo* pTableScanInfo, SSDataBlock* pBlock, uint32_t* status) {
@@ -5374,7 +5388,8 @@ SSDataBlock* createResultDataBlock(const SArray* pExprInfo) {
   return pResBlock;
 }
 
-SOperatorInfo* createTableScanOperatorInfo(void* pTsdbReadHandle, int32_t order, int32_t numOfOutput, int32_t repeatTime, int32_t reverseTime, SExecTaskInfo* pTaskInfo) {
+SOperatorInfo* createTableScanOperatorInfo(void* pTsdbReadHandle, int32_t order, int32_t numOfOutput, int32_t repeatTime, int32_t reverseTime, SArray* pColMatchInfo,
+    SExecTaskInfo* pTaskInfo) {
   assert(repeatTime > 0);
 
   STableScanInfo* pInfo    = taosMemoryCalloc(1, sizeof(STableScanInfo));
@@ -5387,12 +5402,19 @@ SOperatorInfo* createTableScanOperatorInfo(void* pTsdbReadHandle, int32_t order,
     return NULL;
   }
 
+  pInfo->block.pDataBlock = taosArrayInit(numOfOutput, sizeof(SColumnInfoData));
+  for(int32_t i = 0; i < numOfOutput; ++i) {
+    SColumnInfoData idata = {0};
+    taosArrayPush(pInfo->block.pDataBlock, &idata);
+  }
+
   pInfo->pTsdbReadHandle = pTsdbReadHandle;
   pInfo->times             = repeatTime;
   pInfo->reverseTimes      = reverseTime;
   pInfo->order             = order;
   pInfo->current           = 0;
   pInfo->scanFlag          = MAIN_SCAN;
+  pInfo->pColMatchInfo     = pColMatchInfo;
   pOperator->name          = "TableScanOperator";
   pOperator->operatorType  = QUERY_NODE_PHYSICAL_PLAN_TABLE_SCAN;
   pOperator->blockingOptr  = false;
@@ -5489,7 +5511,8 @@ SOperatorInfo* createStreamScanOperatorInfo(void *streamReadHandle, SSDataBlock*
 }
 
 static int32_t loadSysTableContentCb(void* param, const SDataBuf* pMsg, int32_t code) {
-  SSysTableScanInfo* pScanResInfo = (SSysTableScanInfo*) param;
+  SOperatorInfo* operator = (SOperatorInfo *)param;
+  SSysTableScanInfo* pScanResInfo = (SSysTableScanInfo *)operator->info;
   if (TSDB_CODE_SUCCESS == code) {
     pScanResInfo->pRsp = pMsg->pData;
 
@@ -5498,6 +5521,8 @@ static int32_t loadSysTableContentCb(void* param, const SDataBuf* pMsg, int32_t
     pRsp->useconds  = htobe64(pRsp->useconds);
     pRsp->handle    = htobe64(pRsp->handle);
     pRsp->compLen   = htonl(pRsp->compLen);
+  } else {
+    operator->pTaskInfo->code = code;
   }
 
   tsem_post(&pScanResInfo->ready);
@@ -5544,6 +5569,64 @@ static SSDataBlock* doFilterResult(SSysTableScanInfo* pInfo) {
   return pInfo->pRes->info.rows == 0? NULL:pInfo->pRes;
 }
 
+EDealRes getDBNameFromConditionWalker(SNode* pNode, void* pContext) {
+  int32_t code = TSDB_CODE_SUCCESS;
+  ENodeType nType = nodeType(pNode);
+
+  switch (nType) {
+    case QUERY_NODE_OPERATOR: {
+      SOperatorNode *node = (SOperatorNode *)pNode;
+
+      if (OP_TYPE_EQUAL == node->opType) {
+        *(int32_t *)pContext = 1;      
+        return DEAL_RES_CONTINUE;
+      }
+
+      *(int32_t *)pContext = 0;      
+
+      return DEAL_RES_IGNORE_CHILD;
+    }
+    case QUERY_NODE_COLUMN: {
+      if (1 != *(int32_t *)pContext) {
+        return DEAL_RES_CONTINUE;
+      }
+      
+      SColumnNode *node = (SColumnNode *)pNode;
+      if (TSDB_INS_USER_STABLES_DBNAME_COLID == node->colId) {
+        *(int32_t *)pContext = 2;      
+        return DEAL_RES_CONTINUE;
+      }
+
+      *(int32_t *)pContext = 0;  
+      return DEAL_RES_CONTINUE;
+    }
+    case QUERY_NODE_VALUE: {
+      if (2 != *(int32_t *)pContext) {
+        return DEAL_RES_CONTINUE;
+      }
+
+      SValueNode *node = (SValueNode *)pNode;
+      char *dbName = nodesGetValueFromNode(node);
+      strncpy(pContext, varDataVal(dbName), varDataLen(dbName)); 
+      *((char *)pContext + varDataLen(dbName)) = 0;
+      return DEAL_RES_ERROR;  // stop walk
+    }
+    default:
+      break;
+  }
+
+  return DEAL_RES_CONTINUE;
+}
+
+
+void getDBNameFromCondition(SNode *pCondition, char *dbName) {
+  if (NULL == pCondition) {
+    return;
+  }
+
+  nodesWalkNode(pCondition, getDBNameFromConditionWalker, dbName);
+}
+
 static SSDataBlock* doSysTableScan(SOperatorInfo *pOperator, bool* newgroup) {
 // build message and send to mnode to fetch the content of system tables.
   SExecTaskInfo* pTaskInfo = pOperator->pTaskInfo;
@@ -5600,6 +5683,11 @@ static SSDataBlock* doSysTableScan(SOperatorInfo *pOperator, bool* newgroup) {
 
     pInfo->req.type = pInfo->type;
     strncpy(pInfo->req.tb, tNameGetTableName(&pInfo->name), tListLen(pInfo->req.tb));
+    if (pInfo->showRewrite) {
+      char dbName[TSDB_DB_NAME_LEN] = {0};
+      getDBNameFromCondition(pInfo->pCondition, dbName);
+      sprintf(pInfo->req.db, "%d.%s", pInfo->accountId, dbName);
+    }
 
     int32_t contLen = tSerializeSRetrieveTableReq(NULL, 0, &pInfo->req);
     char* buf1 = taosMemoryCalloc(1, contLen);
@@ -5613,7 +5701,7 @@ static SSDataBlock* doSysTableScan(SOperatorInfo *pOperator, bool* newgroup) {
       return NULL;
     }
 
-    pMsgSendInfo->param = pInfo;
+    pMsgSendInfo->param = pOperator;
     pMsgSendInfo->msgInfo.pData = buf1;
     pMsgSendInfo->msgInfo.len = contLen;
     pMsgSendInfo->msgType = TDMT_MND_SYSTABLE_RETRIEVE;
@@ -5623,6 +5711,10 @@ static SSDataBlock* doSysTableScan(SOperatorInfo *pOperator, bool* newgroup) {
     int32_t code = asyncSendMsgToServer(pInfo->pTransporter, &pInfo->epSet, &transporterId, pMsgSendInfo);
     tsem_wait(&pInfo->ready);
 
+    if (pTaskInfo->code) {
+      return NULL;
+    }
+
     SRetrieveMetaTableRsp* pRsp = pInfo->pRsp;
     pInfo->req.showId = pRsp->handle;
 
@@ -5644,7 +5736,7 @@ static SSDataBlock* doSysTableScan(SOperatorInfo *pOperator, bool* newgroup) {
 }
 
 SOperatorInfo* createSysTableScanOperatorInfo(void* pSysTableReadHandle, SSDataBlock* pResBlock, const SName* pName,
-                                              SNode* pCondition, SEpSet epset, SArray* colList, SExecTaskInfo* pTaskInfo) {
+                                              SNode* pCondition, SEpSet epset, SArray* colList, SExecTaskInfo* pTaskInfo, bool showRewrite, int32_t accountId) {
   SSysTableScanInfo* pInfo = taosMemoryCalloc(1, sizeof(SSysTableScanInfo));
   SOperatorInfo* pOperator = taosMemoryCalloc(1, sizeof(SOperatorInfo));
   if (pInfo == NULL || pOperator == NULL) {
@@ -5654,10 +5746,12 @@ SOperatorInfo* createSysTableScanOperatorInfo(void* pSysTableReadHandle, SSDataB
     return NULL;
   }
 
-  pInfo->pRes       = pResBlock;
-  pInfo->capacity   = 4096;
-  pInfo->pCondition = pCondition;
-  pInfo->scanCols   = colList;
+  pInfo->accountId   = accountId;
+  pInfo->showRewrite = showRewrite;
+  pInfo->pRes        = pResBlock;
+  pInfo->capacity    = 4096;
+  pInfo->pCondition  = pCondition;
+  pInfo->scanCols    = colList;
 
   // TODO remove it
   int32_t tableType = 0;
@@ -8497,6 +8591,7 @@ static int32_t doCreateTableGroup(void* metaHandle, int32_t tableType, uint64_t
 static SArray* extractTableIdList(const STableGroupInfo* pTableGroupInfo);
 static SArray* extractScanColumnId(SNodeList* pNodeList);
 static SArray* extractColumnInfo(SNodeList* pNodeList);
+static SArray* extractColMatchInfo(SNodeList* pNodeList);
 
 SOperatorInfo* doCreateOperatorTreeNode(SPhysiNode* pPhyNode, SExecTaskInfo* pTaskInfo, SReadHandle* pHandle, uint64_t queryId, uint64_t taskId, STableGroupInfo* pTableGroupInfo) {
   if (pPhyNode->pChildren == NULL || LIST_LENGTH(pPhyNode->pChildren) == 0) {
@@ -8505,7 +8600,9 @@ SOperatorInfo* doCreateOperatorTreeNode(SPhysiNode* pPhyNode, SExecTaskInfo* pTa
 
       size_t      numOfCols = LIST_LENGTH(pScanPhyNode->pScanCols);
       tsdbReaderT pDataReader = doCreateDataReader((STableScanPhysiNode*)pPhyNode, pHandle, pTableGroupInfo, (uint64_t)queryId, taskId);
-      return createTableScanOperatorInfo(pDataReader, pScanPhyNode->order, numOfCols, pScanPhyNode->count, pScanPhyNode->reverse, pTaskInfo);
+      SArray* pColList = extractColMatchInfo(pScanPhyNode->pScanCols);
+
+      return createTableScanOperatorInfo(pDataReader, pScanPhyNode->order, numOfCols, pScanPhyNode->count, pScanPhyNode->reverse, pColList, pTaskInfo);
     } else if (QUERY_NODE_PHYSICAL_PLAN_EXCHANGE == nodeType(pPhyNode)) {
       SExchangePhysiNode* pExchange = (SExchangePhysiNode*)pPhyNode;
       SSDataBlock* pResBlock = createOutputBuf_rv1(pExchange->node.pOutputDataBlockDesc);
@@ -8530,7 +8627,8 @@ SOperatorInfo* doCreateOperatorTreeNode(SPhysiNode* pPhyNode, SExecTaskInfo* pTa
       SArray* colList = extractScanColumnId(pScanNode->pScanCols);
 
       SOperatorInfo* pOperator = createSysTableScanOperatorInfo(pHandle->meta, pResBlock, &pScanNode->tableName,
-                                                                pScanNode->node.pConditions, pSysScanPhyNode->mgmtEpSet, colList, pTaskInfo);
+                                                                pScanNode->node.pConditions, pSysScanPhyNode->mgmtEpSet, 
+                                                                colList, pTaskInfo, pSysScanPhyNode->showRewrite, pSysScanPhyNode->accountId);
       return pOperator;
     } else {
       ASSERT(0);
@@ -8644,9 +8742,14 @@ SArray* extractScanColumnId(SNodeList* pNodeList) {
   }
 
   for(int32_t i = 0; i < numOfCols; ++i) {
-    STargetNode* pNode = (STargetNode*) nodesListGetNode(pNodeList, i);
-    SColumnNode* pColNode = (SColumnNode*) pNode->pExpr;
-    taosArrayPush(pList, &pColNode->colId);
+    for (int32_t j = 0; j < numOfCols; ++j) {
+      STargetNode* pNode = (STargetNode*) nodesListGetNode(pNodeList, j);
+      if (pNode->slotId == i) {
+        SColumnNode* pColNode = (SColumnNode*) pNode->pExpr;
+        taosArrayPush(pList, &pColNode->colId);
+        break;
+      }
+    }
   }
 
   return pList;
@@ -8678,6 +8781,28 @@ SArray* extractColumnInfo(SNodeList* pNodeList) {
   return pList;
 }
 
+SArray* extractColMatchInfo(SNodeList* pNodeList) {
+  size_t numOfCols = LIST_LENGTH(pNodeList);
+  SArray* pList = taosArrayInit(numOfCols, sizeof(SColMatchInfo));
+  if (pList == NULL) {
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
+    return NULL;
+  }
+
+  for(int32_t i = 0; i < numOfCols; ++i) {
+    STargetNode* pNode = (STargetNode*) nodesListGetNode(pNodeList, i);
+    SColumnNode* pColNode = (SColumnNode*) pNode->pExpr;
+
+    SColMatchInfo c = {0};
+    c.colId = pColNode->colId;
+    c.targetSlotId = pNode->slotId;
+
+    taosArrayPush(pList, &c);
+  }
+
+  return pList;
+}
+
 int32_t doCreateTableGroup(void* metaHandle, int32_t tableType, uint64_t tableUid, STableGroupInfo* pGroupInfo, uint64_t queryId, uint64_t taskId) {
   int32_t code = 0;
   if (tableType == TSDB_SUPER_TABLE) {

source/libs/function/CMakeLists.txt

@@ -11,8 +11,8 @@ target_include_directories(
 
 target_link_libraries(
     function
+    PRIVATE os util common nodes scalar
     PUBLIC uv_a
-    PRIVATE os util common nodes
 )
 
 add_executable(runUdf test/runUdf.c)

source/libs/function/src/builtins.c

@@ -15,6 +15,7 @@
 
 #include "builtins.h"
 #include "builtinsimpl.h"
+#include "scalar.h"
 #include "taoserror.h"
 #include "tdatablock.h"
 
@@ -151,6 +152,136 @@ const SBuiltinFuncDefinition funcMgtBuiltins[] = {
     .processFunc  = lastFunction,
     .finalizeFunc = functionFinalize
   },
+  {
+    .name = "abs",
+    .type = FUNCTION_TYPE_ABS,
+    .classification = FUNC_MGT_SCALAR_FUNC,
+    .checkFunc    = stubCheckAndGetResultType,
+    .getEnvFunc   = NULL,
+    .initFunc     = NULL,
+    .sprocessFunc = absFunction,
+    .finalizeFunc = NULL
+  },
+  {
+    .name = "log",
+    .type = FUNCTION_TYPE_LOG,
+    .classification = FUNC_MGT_SCALAR_FUNC,
+    .checkFunc    = stubCheckAndGetResultType,
+    .getEnvFunc   = NULL,
+    .initFunc     = NULL,
+    .sprocessFunc = logFunction,
+    .finalizeFunc = NULL
+  },
+  {
+    .name = "power",
+    .type = FUNCTION_TYPE_POW,
+    .classification = FUNC_MGT_SCALAR_FUNC,
+    .checkFunc    = stubCheckAndGetResultType,
+    .getEnvFunc   = NULL,
+    .initFunc     = NULL,
+    .sprocessFunc = powFunction,
+    .finalizeFunc = NULL
+  },
+  {
+    .name = "sqrt",
+    .type = FUNCTION_TYPE_SQRT,
+    .classification = FUNC_MGT_SCALAR_FUNC,
+    .checkFunc    = stubCheckAndGetResultType,
+    .getEnvFunc   = NULL,
+    .initFunc     = NULL,
+    .sprocessFunc = sqrtFunction,
+    .finalizeFunc = NULL
+  },
+  {
+    .name = "ceil",
+    .type = FUNCTION_TYPE_CEIL,
+    .classification = FUNC_MGT_SCALAR_FUNC,
+    .checkFunc    = stubCheckAndGetResultType,
+    .getEnvFunc   = NULL,
+    .initFunc     = NULL,
+    .sprocessFunc = ceilFunction,
+    .finalizeFunc = NULL
+  },
+  {
+    .name = "floor",
+    .type = FUNCTION_TYPE_FLOOR,
+    .classification = FUNC_MGT_SCALAR_FUNC,
+    .checkFunc    = stubCheckAndGetResultType,
+    .getEnvFunc   = NULL,
+    .initFunc     = NULL,
+    .sprocessFunc = floorFunction,
+    .finalizeFunc = NULL
+  },
+  {
+    .name = "round",
+    .type = FUNCTION_TYPE_ROUND,
+    .classification = FUNC_MGT_SCALAR_FUNC,
+    .checkFunc    = stubCheckAndGetResultType,
+    .getEnvFunc   = NULL,
+    .initFunc     = NULL,
+    .sprocessFunc = roundFunction,
+    .finalizeFunc = NULL
+  },
+  {
+    .name = "sin",
+    .type = FUNCTION_TYPE_SIN,
+    .classification = FUNC_MGT_SCALAR_FUNC,
+    .checkFunc    = stubCheckAndGetResultType,
+    .getEnvFunc   = NULL,
+    .initFunc     = NULL,
+    .sprocessFunc = sinFunction,
+    .finalizeFunc = NULL
+  },
+  {
+    .name = "cos",
+    .type = FUNCTION_TYPE_COS,
+    .classification = FUNC_MGT_SCALAR_FUNC,
+    .checkFunc    = stubCheckAndGetResultType,
+    .getEnvFunc   = NULL,
+    .initFunc     = NULL,
+    .sprocessFunc = cosFunction,
+    .finalizeFunc = NULL
+  },
+  {
+    .name = "tan",
+    .type = FUNCTION_TYPE_TAN,
+    .classification = FUNC_MGT_SCALAR_FUNC,
+    .checkFunc    = stubCheckAndGetResultType,
+    .getEnvFunc   = NULL,
+    .initFunc     = NULL,
+    .sprocessFunc = tanFunction,
+    .finalizeFunc = NULL
+  },
+  {
+    .name = "asin",
+    .type = FUNCTION_TYPE_ASIN,
+    .classification = FUNC_MGT_SCALAR_FUNC,
+    .checkFunc    = stubCheckAndGetResultType,
+    .getEnvFunc   = NULL,
+    .initFunc     = NULL,
+    .sprocessFunc = asinFunction,
+    .finalizeFunc = NULL
+  },
+  {
+    .name = "acos",
+    .type = FUNCTION_TYPE_ACOS,
+    .classification = FUNC_MGT_SCALAR_FUNC,
+    .checkFunc    = stubCheckAndGetResultType,
+    .getEnvFunc   = NULL,
+    .initFunc     = NULL,
+    .sprocessFunc = acosFunction,
+    .finalizeFunc = NULL
+  },
+  {
+    .name = "atan",
+    .type = FUNCTION_TYPE_ATAN,
+    .classification = FUNC_MGT_SCALAR_FUNC,
+    .checkFunc    = stubCheckAndGetResultType,
+    .getEnvFunc   = NULL,
+    .initFunc     = NULL,
+    .sprocessFunc = atanFunction,
+    .finalizeFunc = NULL
+  },
   {
     .name = "concat",
     .type = FUNCTION_TYPE_CONCAT,

source/libs/nodes/src/nodesCloneFuncs.c

@@ -19,6 +19,11 @@
 #include "taos.h"
 #include "taoserror.h"
 
+#define COPY_ALL_SCALAR_FIELDS \
+	do { \
+    memcpy((pDst), (pSrc), sizeof(*pSrc)); \
+	} while (0)
+
 #define COPY_SCALAR_FIELD(fldname) \
 	do { \
     (pDst)->fldname = (pSrc)->fldname; \
@@ -195,6 +200,12 @@ static SNode* groupingSetNodeCopy(const SGroupingSetNode* pSrc, SGroupingSetNode
   return (SNode*)pDst;
 }
 
+static SNode* orderByExprNodeCopy(const SOrderByExprNode* pSrc, SOrderByExprNode* pDst) {
+  COPY_ALL_SCALAR_FIELDS;
+  CLONE_NODE_FIELD(pExpr);
+  return (SNode*)pDst;
+}
+
 static SNode* fillNodeCopy(const SFillNode* pSrc, SFillNode* pDst) {
   COPY_SCALAR_FIELD(mode);
   CLONE_NODE_FIELD(pValues);
@@ -237,6 +248,7 @@ static SNode* logicScanCopy(const SScanLogicNode* pSrc, SScanLogicNode* pDst) {
   COPY_SCALAR_FIELD(scanFlag);
   COPY_SCALAR_FIELD(scanRange);
   COPY_SCALAR_FIELD(tableName);
+  COPY_SCALAR_FIELD(showRewrite);
   return (SNode*)pDst;
 }
 
@@ -250,6 +262,7 @@ static SNode* logicAggCopy(const SAggLogicNode* pSrc, SAggLogicNode* pDst) {
 static SNode* logicProjectCopy(const SProjectLogicNode* pSrc, SProjectLogicNode* pDst) {
   COPY_BASE_OBJECT_FIELD(node, logicNodeCopy);
   CLONE_NODE_LIST_FIELD(pProjections);
+  COPY_CHAR_ARRAY_FIELD(stmtName);
   return (SNode*)pDst;
 }
 
@@ -266,16 +279,24 @@ static SNode* logicExchangeCopy(const SExchangeLogicNode* pSrc, SExchangeLogicNo
 }
 
 static SNode* logicWindowCopy(const SWindowLogicNode* pSrc, SWindowLogicNode* pDst) {
+  COPY_ALL_SCALAR_FIELDS;
   COPY_BASE_OBJECT_FIELD(node, logicNodeCopy);
-  COPY_SCALAR_FIELD(winType);
+  // COPY_SCALAR_FIELD(winType);
   CLONE_NODE_LIST_FIELD(pFuncs);
-  COPY_SCALAR_FIELD(interval);
-  COPY_SCALAR_FIELD(offset);
-  COPY_SCALAR_FIELD(sliding);
-  COPY_SCALAR_FIELD(intervalUnit);
-  COPY_SCALAR_FIELD(slidingUnit);
+  // COPY_SCALAR_FIELD(interval);
+  // COPY_SCALAR_FIELD(offset);
+  // COPY_SCALAR_FIELD(sliding);
+  // COPY_SCALAR_FIELD(intervalUnit);
+  // COPY_SCALAR_FIELD(slidingUnit);
   CLONE_NODE_FIELD(pFill);
-  COPY_SCALAR_FIELD(sessionGap);
+  // COPY_SCALAR_FIELD(sessionGap);
+  CLONE_NODE_FIELD(pTspk);
+  return (SNode*)pDst;
+}
+
+static SNode* logicSortCopy(const SSortLogicNode* pSrc, SSortLogicNode* pDst) {
+  COPY_BASE_OBJECT_FIELD(node, logicNodeCopy);
+  CLONE_NODE_LIST_FIELD(pSortKeys);
   return (SNode*)pDst;
 }
 
@@ -338,6 +359,7 @@ SNodeptr nodesCloneNode(const SNodeptr pNode) {
     case QUERY_NODE_GROUPING_SET:
       return groupingSetNodeCopy((const SGroupingSetNode*)pNode, (SGroupingSetNode*)pDst);
     case QUERY_NODE_ORDER_BY_EXPR:
+      return orderByExprNodeCopy((const SOrderByExprNode*)pNode, (SOrderByExprNode*)pDst);
     case QUERY_NODE_LIMIT:
       break;
     case QUERY_NODE_FILL:
@@ -360,6 +382,8 @@ SNodeptr nodesCloneNode(const SNodeptr pNode) {
       return logicExchangeCopy((const SExchangeLogicNode*)pNode, (SExchangeLogicNode*)pDst);
     case QUERY_NODE_LOGIC_PLAN_WINDOW:
       return logicWindowCopy((const SWindowLogicNode*)pNode, (SWindowLogicNode*)pDst);
+    case QUERY_NODE_LOGIC_PLAN_SORT:
+      return logicSortCopy((const SSortLogicNode*)pNode, (SSortLogicNode*)pDst);
     case QUERY_NODE_LOGIC_SUBPLAN:
       return logicSubplanCopy((const SLogicSubplan*)pNode, (SLogicSubplan*)pDst);
     default:

source/libs/nodes/src/nodesCodeFuncs.c

@@ -764,6 +764,8 @@ static int32_t jsonToEpSet(const SJson* pJson, void* pObj) {
 }
 
 static const char* jkSysTableScanPhysiPlanMnodeEpSet = "MnodeEpSet";
+static const char* jkSysTableScanPhysiPlanShowRewrite = "ShowRewrite";
+static const char* jkSysTableScanPhysiPlanAccountId = "AccountId";
 
 static int32_t physiSysTableScanNodeToJson(const void* pObj, SJson* pJson) {
   const SSystemTableScanPhysiNode* pNode = (const SSystemTableScanPhysiNode*)pObj;
@@ -772,6 +774,12 @@ static int32_t physiSysTableScanNodeToJson(const void* pObj, SJson* pJson) {
   if (TSDB_CODE_SUCCESS == code) {
     code = tjsonAddObject(pJson, jkSysTableScanPhysiPlanMnodeEpSet, epSetToJson, &pNode->mgmtEpSet);
   }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonAddBoolToObject(pJson, jkSysTableScanPhysiPlanShowRewrite, pNode->showRewrite);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonAddIntegerToObject(pJson, jkSysTableScanPhysiPlanAccountId, pNode->accountId);
+  }
 
   return code;
 }
@@ -783,6 +791,12 @@ static int32_t jsonToPhysiSysTableScanNode(const SJson* pJson, void* pObj) {
   if (TSDB_CODE_SUCCESS == code) {
     code = tjsonToObject(pJson, jkSysTableScanPhysiPlanMnodeEpSet, jsonToEpSet, &pNode->mgmtEpSet);
   }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonGetBoolValue(pJson, jkSysTableScanPhysiPlanShowRewrite, &pNode->showRewrite);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonGetNumberValue(pJson, jkSysTableScanPhysiPlanAccountId, pNode->accountId);
+  }
 
   return code;
 }
@@ -837,9 +851,7 @@ static int32_t jsonToPhysiJoinNode(const SJson* pJson, void* pObj) {
 
   int32_t code = jsonToPhysicPlanNode(pJson, pObj);
   if (TSDB_CODE_SUCCESS == code) {
-    int32_t val;
-    code = tjsonGetIntValue(pJson, jkJoinPhysiPlanJoinType, &val);
-    pNode->joinType = val;
+    code = tjsonGetNumberValue(pJson, jkJoinPhysiPlanJoinType, pNode->joinType);
   }
   if (TSDB_CODE_SUCCESS == code) {
     code = jsonToNodeObject(pJson, jkJoinPhysiPlanOnConditions, &pNode->pOnConditions);
@@ -920,6 +932,37 @@ static int32_t jsonToPhysiExchangeNode(const SJson* pJson, void* pObj) {
   return code;
 }
 
+static const char* jkSortPhysiPlanExprs = "Exprs";
+static const char* jkSortPhysiPlanSortKeys = "SortKeys";
+
+static int32_t physiSortNodeToJson(const void* pObj, SJson* pJson) {
+  const SSortPhysiNode* pNode = (const SSortPhysiNode*)pObj;
+
+  int32_t code = physicPlanNodeToJson(pObj, pJson);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = nodeListToJson(pJson, jkSortPhysiPlanExprs, pNode->pExprs);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = nodeListToJson(pJson, jkSortPhysiPlanSortKeys, pNode->pSortKeys);
+  }
+
+  return code;
+}
+
+static int32_t jsonToPhysiSortNode(const SJson* pJson, void* pObj) {
+  SSortPhysiNode* pNode = (SSortPhysiNode*)pObj;
+
+  int32_t code = jsonToPhysicPlanNode(pJson, pObj);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = jsonToNodeList(pJson, jkSortPhysiPlanExprs, &pNode->pExprs);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = jsonToNodeList(pJson, jkSortPhysiPlanSortKeys, &pNode->pSortKeys);
+  }
+
+  return code;
+}
+
 static const char* jkWindowPhysiPlanExprs = "Exprs";
 static const char* jkWindowPhysiPlanFuncs = "Funcs";
 
@@ -957,6 +1000,7 @@ static const char* jkIntervalPhysiPlanSliding = "Sliding";
 static const char* jkIntervalPhysiPlanIntervalUnit = "intervalUnit";
 static const char* jkIntervalPhysiPlanSlidingUnit  = "slidingUnit";
 static const char* jkIntervalPhysiPlanFill = "Fill";
+static const char* jkIntervalPhysiPlanTsPk = "TsPk";
 
 static int32_t physiIntervalNodeToJson(const void* pObj, SJson* pJson) {
   const SIntervalPhysiNode* pNode = (const SIntervalPhysiNode*)pObj;
@@ -980,6 +1024,9 @@ static int32_t physiIntervalNodeToJson(const void* pObj, SJson* pJson) {
   if (TSDB_CODE_SUCCESS == code) {
     code = tjsonAddObject(pJson, jkIntervalPhysiPlanFill, nodeToJson, pNode->pFill);
   }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonAddObject(pJson, jkIntervalPhysiPlanTsPk, nodeToJson, pNode->pTspk);
+  }
 
   return code;
 }
@@ -1006,6 +1053,9 @@ static int32_t jsonToPhysiIntervalNode(const SJson* pJson, void* pObj) {
   if (TSDB_CODE_SUCCESS == code) {
     code = jsonToNodeObject(pJson, jkIntervalPhysiPlanFill, (SNode**)&pNode->pFill);
   }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = jsonToNodeObject(pJson, jkIntervalPhysiPlanTsPk, (SNode**)&pNode->pTspk);
+  }
 
   return code;
 }
@@ -1164,9 +1214,7 @@ static int32_t jsonToSubplan(const SJson* pJson, void* pObj) {
 
   int32_t code = tjsonToObject(pJson, jkSubplanId, jsonToSubplanId, &pNode->id);
   if (TSDB_CODE_SUCCESS == code) {
-    int32_t val;
-    code = tjsonGetIntValue(pJson, jkSubplanType, &val);
-    pNode->subplanType = val;
+    code = tjsonGetNumberValue(pJson, jkSubplanType, pNode->subplanType);
   }
   if (TSDB_CODE_SUCCESS == code) {
     code = tjsonGetIntValue(pJson, jkSubplanMsgType, &pNode->msgType);
@@ -1356,9 +1404,7 @@ static int32_t jsonToColumnNode(const SJson* pJson, void* pObj) {
     code = tjsonGetSmallIntValue(pJson, jkColumnColId, &pNode->colId);
   }
   if (TSDB_CODE_SUCCESS == code) {
-    int32_t tmp;
-    code = tjsonGetIntValue(pJson, jkColumnColType, &tmp);
-    pNode->colType = tmp;
+    code = tjsonGetNumberValue(pJson, jkColumnColType, pNode->colType);
   }
   if (TSDB_CODE_SUCCESS == code) {
     code = tjsonGetStringValue(pJson, jkColumnDbName, pNode->dbName);
@@ -1546,9 +1592,7 @@ static int32_t jsonToOperatorNode(const SJson* pJson, void* pObj) {
 
   int32_t code = jsonToExprNode(pJson, pObj);
   if (TSDB_CODE_SUCCESS == code) {
-    int32_t val;
-    code = tjsonGetIntValue(pJson, jkOperatorType, &val);
-    pNode->opType = val;
+    code = tjsonGetNumberValue(pJson, jkOperatorType, pNode->opType);
   }
   if (TSDB_CODE_SUCCESS == code) {
     code = jsonToNodeObject(pJson, jkOperatorLeft, &pNode->pLeft);
@@ -1582,9 +1626,7 @@ static int32_t jsonToLogicConditionNode(const SJson* pJson, void* pObj) {
 
   int32_t code = jsonToExprNode(pJson, pObj);
   if (TSDB_CODE_SUCCESS == code) {
-    int32_t val;
-    code = tjsonGetIntValue(pJson, jkLogicCondType, &val);
-    pNode->condType = val;
+    code = tjsonGetNumberValue(pJson, jkLogicCondType, pNode->condType);
   }
   if (TSDB_CODE_SUCCESS == code) {
     code = jsonToNodeList(pJson, jkLogicCondParameters, &pNode->pParameterList);
@@ -1807,10 +1849,43 @@ static int32_t groupingSetNodeToJson(const void* pObj, SJson* pJson) {
   return code;
 }
 
+static const char* jkOrderByExprExpr = "Expr";
+static const char* jkOrderByExprOrder = "Order";
+static const char* jkOrderByExprNullOrder = "NullOrder";
+
+static int32_t orderByExprNodeToJson(const void* pObj, SJson* pJson) {
+  const SOrderByExprNode* pNode = (const SOrderByExprNode*)pObj;
+
+  int32_t code = tjsonAddObject(pJson, jkOrderByExprExpr, nodeToJson, pNode->pExpr);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonAddIntegerToObject(pJson, jkOrderByExprOrder, pNode->order);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonAddIntegerToObject(pJson, jkOrderByExprNullOrder, pNode->nullOrder);
+  }
+
+  return code;
+}
+
+static int32_t jsonToOrderByExprNode(const SJson* pJson, void* pObj) {
+  SOrderByExprNode* pNode = (SOrderByExprNode*)pObj;
+
+  int32_t code = jsonToNodeObject(pJson, jkOrderByExprExpr, &pNode->pExpr);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonGetNumberValue(pJson, jkOrderByExprOrder, pNode->order);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonGetNumberValue(pJson, jkOrderByExprNullOrder, pNode->nullOrder);
+  }
+
+  return code;
+}
+
 static const char* jkIntervalWindowInterval = "Interval";
 static const char* jkIntervalWindowOffset = "Offset";
 static const char* jkIntervalWindowSliding = "Sliding";
 static const char* jkIntervalWindowFill = "Fill";
+static const char* jkIntervalWindowTsPk = "TsPk";
 
 static int32_t intervalWindowNodeToJson(const void* pObj, SJson* pJson) {
   const SIntervalWindowNode* pNode = (const SIntervalWindowNode*)pObj;
@@ -1825,6 +1900,9 @@ static int32_t intervalWindowNodeToJson(const void* pObj, SJson* pJson) {
   if (TSDB_CODE_SUCCESS == code) {
     code = tjsonAddObject(pJson, jkIntervalWindowFill, nodeToJson, pNode->pFill);
   }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonAddObject(pJson, jkIntervalWindowTsPk, nodeToJson, pNode->pCol);
+  }
 
   return code;
 }
@@ -1842,6 +1920,9 @@ static int32_t jsonToIntervalWindowNode(const SJson* pJson, void* pObj) {
   if (TSDB_CODE_SUCCESS == code) {
     code = jsonToNodeObject(pJson, jkIntervalWindowFill, &pNode->pFill);
   }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = jsonToNodeObject(pJson, jkIntervalWindowTsPk, &pNode->pCol);
+  }
 
   return code;
 }
@@ -2019,6 +2100,7 @@ static const char* jkSelectStmtHaving = "Having";
 static const char* jkSelectStmtOrderBy = "OrderBy";
 static const char* jkSelectStmtLimit = "Limit";
 static const char* jkSelectStmtSlimit = "Slimit";
+static const char* jkSelectStmtStmtName = "StmtName";
 
 static int32_t selectStmtTojson(const void* pObj, SJson* pJson) {
   const SSelectStmt* pNode = (const SSelectStmt*)pObj;
@@ -2054,6 +2136,9 @@ static int32_t selectStmtTojson(const void* pObj, SJson* pJson) {
   if (TSDB_CODE_SUCCESS == code) {
     code = tjsonAddObject(pJson, jkSelectStmtSlimit, nodeToJson, pNode->pSlimit);
   }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonAddStringToObject(pJson, jkSelectStmtStmtName, pNode->stmtName);
+  }
 
   return code;
 }
@@ -2092,6 +2177,9 @@ static int32_t jsonToSelectStmt(const SJson* pJson, void* pObj) {
   if (TSDB_CODE_SUCCESS == code) {
     code = jsonToNodeObject(pJson, jkSelectStmtSlimit, &pNode->pSlimit);
   }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonGetStringValue(pJson, jkSelectStmtStmtName, pNode->stmtName);
+  }
 
   return code;
 }
@@ -2155,6 +2243,7 @@ static int32_t specificNodeToJson(const void* pObj, SJson* pJson) {
     case QUERY_NODE_GROUPING_SET:
       return groupingSetNodeToJson(pObj, pJson);
     case QUERY_NODE_ORDER_BY_EXPR:
+      return orderByExprNodeToJson(pObj, pJson);
     case QUERY_NODE_LIMIT:
     case QUERY_NODE_STATE_WINDOW:
     case QUERY_NODE_SESSION_WINDOW:
@@ -2218,7 +2307,7 @@ static int32_t specificNodeToJson(const void* pObj, SJson* pJson) {
     case QUERY_NODE_PHYSICAL_PLAN_EXCHANGE:
       return physiExchangeNodeToJson(pObj, pJson);
     case QUERY_NODE_PHYSICAL_PLAN_SORT:
-      break;
+      return physiSortNodeToJson(pObj, pJson);
     case QUERY_NODE_PHYSICAL_PLAN_INTERVAL:
       return physiIntervalNodeToJson(pObj, pJson);
     case QUERY_NODE_PHYSICAL_PLAN_SESSION_WINDOW:
@@ -2258,7 +2347,8 @@ static int32_t jsonToSpecificNode(const SJson* pJson, void* pObj) {
     //   break;
     // case QUERY_NODE_GROUPING_SET:
     //   return jsonToGroupingSetNode(pJson, pObj);
-    // case QUERY_NODE_ORDER_BY_EXPR:
+    case QUERY_NODE_ORDER_BY_EXPR:
+      return jsonToOrderByExprNode(pJson, pObj);
     // case QUERY_NODE_LIMIT:
     // case QUERY_NODE_STATE_WINDOW:
     // case QUERY_NODE_SESSION_WINDOW:
@@ -2307,6 +2397,8 @@ static int32_t jsonToSpecificNode(const SJson* pJson, void* pObj) {
       return jsonToPhysiAggNode(pJson, pObj);
     case QUERY_NODE_PHYSICAL_PLAN_EXCHANGE:
       return jsonToPhysiExchangeNode(pJson, pObj);
+    case QUERY_NODE_PHYSICAL_PLAN_SORT:
+      return jsonToPhysiSortNode(pJson, pObj);
     case QUERY_NODE_PHYSICAL_PLAN_INTERVAL:
       return jsonToPhysiIntervalNode(pJson, pObj);
     case QUERY_NODE_PHYSICAL_PLAN_SESSION_WINDOW:
@@ -2348,9 +2440,7 @@ static int32_t nodeToJson(const void* pObj, SJson* pJson) {
 static int32_t jsonToNode(const SJson* pJson, void* pObj) {
   SNode* pNode = (SNode*)pObj;
 
-  int32_t val = 0;
-  int32_t code = tjsonGetIntValue(pJson, jkNodeType, &val);
-  pNode->type = val;
+  int32_t code = tjsonGetNumberValue(pJson, jkNodeType, pNode->type);
   if (TSDB_CODE_SUCCESS == code) {
     code = tjsonToObject(pJson, nodesNodeName(pNode->type), jsonToSpecificNode, pNode);
     if (TSDB_CODE_SUCCESS != code) {

source/libs/nodes/src/nodesTraverseFuncs.c

@@ -99,6 +99,9 @@ static EDealRes walkNode(SNode* pNode, ETraversalOrder order, FNodeWalker walker
       if (DEAL_RES_ERROR != res) {
         res = walkNode(pInterval->pFill, order, walker, pContext);
       }
+      if (DEAL_RES_ERROR != res) {
+        res = walkNode(pInterval->pCol, order, walker, pContext);
+      }
       break;
     }
     case QUERY_NODE_NODE_LIST:
@@ -225,6 +228,9 @@ static EDealRes rewriteNode(SNode** pRawNode, ETraversalOrder order, FNodeRewrit
       if (DEAL_RES_ERROR != res) {
         res = rewriteNode(&(pInterval->pFill), order, rewriter, pContext);
       }
+      if (DEAL_RES_ERROR != res) {
+        res = rewriteNode(&(pInterval->pCol), order, rewriter, pContext);
+      }
       break;
     }
     case QUERY_NODE_NODE_LIST:
@@ -294,10 +300,10 @@ void nodesWalkSelectStmt(SSelectStmt* pSelect, ESqlClause clause, FNodeWalker wa
     case SQL_CLAUSE_GROUP_BY:
       nodesWalkNode(pSelect->pHaving, walker, pContext);
     case SQL_CLAUSE_HAVING:
-      nodesWalkList(pSelect->pProjectionList, walker, pContext);
-    case SQL_CLAUSE_SELECT:
       nodesWalkList(pSelect->pOrderByList, walker, pContext);
     case SQL_CLAUSE_ORDER_BY:
+      nodesWalkList(pSelect->pProjectionList, walker, pContext);
+    case SQL_CLAUSE_SELECT:
     default:
       break;
   }

source/libs/nodes/src/nodesUtilFuncs.c

@@ -159,6 +159,8 @@ SNodeptr nodesMakeNode(ENodeType type) {
       return makeNode(type, sizeof(SExchangeLogicNode));
     case QUERY_NODE_LOGIC_PLAN_WINDOW:
       return makeNode(type, sizeof(SWindowLogicNode));
+    case QUERY_NODE_LOGIC_PLAN_SORT:
+      return makeNode(type, sizeof(SSortLogicNode));
     case QUERY_NODE_LOGIC_SUBPLAN:
       return makeNode(type, sizeof(SLogicSubplan));
     case QUERY_NODE_LOGIC_PLAN:
@@ -182,7 +184,7 @@ SNodeptr nodesMakeNode(ENodeType type) {
     case QUERY_NODE_PHYSICAL_PLAN_EXCHANGE:
       return makeNode(type, sizeof(SExchangePhysiNode));
     case QUERY_NODE_PHYSICAL_PLAN_SORT:
-      return makeNode(type, sizeof(SNode));
+      return makeNode(type, sizeof(SSortPhysiNode));
     case QUERY_NODE_PHYSICAL_PLAN_INTERVAL:
       return makeNode(type, sizeof(SIntervalPhysiNode));
     case QUERY_NODE_PHYSICAL_PLAN_SESSION_WINDOW:
@@ -555,7 +557,7 @@ static EDealRes collectColumns(SNode* pNode, void* pContext) {
   if (QUERY_NODE_COLUMN == nodeType(pNode)) {
     SColumnNode* pCol = (SColumnNode*)pNode;
     int32_t colId = pCol->colId;
-    if (0 == strcmp(pCxt->pTableAlias, pCol->tableAlias)) {
+    if (NULL == pCxt->pTableAlias || 0 == strcmp(pCxt->pTableAlias, pCol->tableAlias)) {
       return doCollect(pCxt, colId, pNode);
     }
   }

source/libs/parser/inc/parUtil.h

@@ -30,6 +30,8 @@ extern "C" {
 #define parserDebug(param, ...)  qDebug("PARSER: " param, __VA_ARGS__)
 #define parserTrace(param, ...)  qTrace("PARSER: " param, __VA_ARGS__)
 
+#define PK_TS_COL_INTERNAL_NAME "_rowts"
+
 typedef struct SMsgBuf {
   int32_t len;
   char   *buf;

source/libs/parser/src/parAstCreater.c

@@ -645,6 +645,11 @@ SNode* createTempTableNode(SAstCreateContext* pCxt, SNode* pSubquery, const STok
   tempTable->pSubquery = pSubquery;
   if (NULL != pTableAlias && TK_NK_NIL != pTableAlias->type) {
     strncpy(tempTable->table.tableAlias, pTableAlias->z, pTableAlias->n);
+  } else {
+    sprintf(tempTable->table.tableAlias, "%p", tempTable);
+  }
+  if (QUERY_NODE_SELECT_STMT == nodeType(pSubquery)) {
+    strcpy(((SSelectStmt*)pSubquery)->stmtName, tempTable->table.tableAlias);
   }
   return (SNode*)tempTable;
 }
@@ -697,6 +702,13 @@ SNode* createStateWindowNode(SAstCreateContext* pCxt, SNode* pCol) {
 SNode* createIntervalWindowNode(SAstCreateContext* pCxt, SNode* pInterval, SNode* pOffset, SNode* pSliding, SNode* pFill) {
   SIntervalWindowNode* interval = (SIntervalWindowNode*)nodesMakeNode(QUERY_NODE_INTERVAL_WINDOW);
   CHECK_OUT_OF_MEM(interval);
+  interval->pCol = nodesMakeNode(QUERY_NODE_COLUMN);
+  if (NULL == interval->pCol) {
+    nodesDestroyNode(interval);
+    CHECK_OUT_OF_MEM(interval->pCol);
+  }
+  ((SColumnNode*)interval->pCol)->colId = PRIMARYKEY_TIMESTAMP_COL_ID;
+  strcpy(((SColumnNode*)interval->pCol)->colName, PK_TS_COL_INTERNAL_NAME);
   interval->pInterval = pInterval;
   interval->pOffset = pOffset;
   interval->pSliding = pSliding;
@@ -792,6 +804,7 @@ SNode* createSelectStmt(SAstCreateContext* pCxt, bool isDistinct, SNodeList* pPr
   select->isDistinct = isDistinct;
   select->pProjectionList = pProjectionList;
   select->pFromTable = pTable;
+  sprintf(select->stmtName, "%p", select);
   return (SNode*)select;
 }
 

source/libs/parser/src/parTranslater.c

@@ -84,12 +84,18 @@ static SName* toName(int32_t acctId, const char* pDbName, const char* pTableName
   return pName;
 }
 
-static int32_t collectUseDatabase(const char* pFullDbName, SHashObj* pDbs) {
+static int32_t collectUseDatabaseImpl(const char* pFullDbName, SHashObj* pDbs) {
   SFullDatabaseName name = {0};
   strcpy(name.fullDbName, pFullDbName);
   return taosHashPut(pDbs, pFullDbName, strlen(pFullDbName), &name, sizeof(SFullDatabaseName));
 }
 
+static int32_t collectUseDatabase(const SName* pName, SHashObj* pDbs) {
+  char dbFName[TSDB_DB_FNAME_LEN] = {0};
+  tNameGetFullDbName(pName, dbFName);
+  return collectUseDatabaseImpl(dbFName, pDbs);
+}
+
 static int32_t collectUseTable(const SName* pName, SHashObj* pDbs) {
   char fullName[TSDB_TABLE_FNAME_LEN];
   tNameExtractFullName(pName, fullName);
@@ -98,7 +104,10 @@ static int32_t collectUseTable(const SName* pName, SHashObj* pDbs) {
 
 static int32_t getTableMetaImpl(STranslateContext* pCxt, const SName* pName, STableMeta** pMeta) {
   SParseContext* pParCxt = pCxt->pParseCxt;
-  int32_t code = collectUseTable(pName, pCxt->pTables);
+  int32_t code = collectUseDatabase(pName, pCxt->pDbs);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = collectUseTable(pName, pCxt->pTables);
+  }
   if (TSDB_CODE_SUCCESS == code) {
     code = catalogGetTableMeta(pParCxt->pCatalog, pParCxt->pTransporter, &pParCxt->mgmtEpSet, pName, pMeta);
   }
@@ -117,7 +126,10 @@ static int32_t getTableMeta(STranslateContext* pCxt, const char* pDbName, const
 
 static int32_t getTableDistVgInfo(STranslateContext* pCxt, const SName* pName, SArray** pVgInfo) {
   SParseContext* pParCxt = pCxt->pParseCxt;
-  int32_t code = collectUseTable(pName, pCxt->pTables);
+  int32_t code = collectUseDatabase(pName, pCxt->pDbs);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = collectUseTable(pName, pCxt->pTables);
+  }
   if (TSDB_CODE_SUCCESS == code) {
     code = catalogGetTableDistVgInfo(pParCxt->pCatalog, pParCxt->pTransporter, &pParCxt->mgmtEpSet, pName, pVgInfo);
   }
@@ -131,7 +143,7 @@ static int32_t getDBVgInfoImpl(STranslateContext* pCxt, const SName* pName, SArr
   SParseContext* pParCxt = pCxt->pParseCxt;
   char fullDbName[TSDB_DB_FNAME_LEN];
   tNameGetFullDbName(pName, fullDbName);
-  int32_t code = collectUseDatabase(fullDbName, pCxt->pDbs);
+  int32_t code = collectUseDatabaseImpl(fullDbName, pCxt->pDbs);
   if (TSDB_CODE_SUCCESS == code) {
     code = catalogGetDBVgInfo(pParCxt->pCatalog, pParCxt->pTransporter, &pParCxt->mgmtEpSet, fullDbName, pVgInfo);
   }
@@ -151,7 +163,10 @@ static int32_t getDBVgInfo(STranslateContext* pCxt, const char* pDbName, SArray*
 
 static int32_t getTableHashVgroupImpl(STranslateContext* pCxt, const SName* pName, SVgroupInfo* pInfo) {
   SParseContext* pParCxt = pCxt->pParseCxt;
-  int32_t code = collectUseTable(pName, pCxt->pTables);
+  int32_t code = collectUseDatabase(pName, pCxt->pDbs);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = collectUseTable(pName, pCxt->pTables);
+  }
   if (TSDB_CODE_SUCCESS == code) {
     code = catalogGetTableHashVgroup(pParCxt->pCatalog, pParCxt->pTransporter, &pParCxt->mgmtEpSet, pName, pInfo);
   }
@@ -170,7 +185,7 @@ static int32_t getTableHashVgroup(STranslateContext* pCxt, const char* pDbName,
 
 static int32_t getDBVgVersion(STranslateContext* pCxt, const char* pDbFName, int32_t* pVersion, int64_t* pDbId, int32_t* pTableNum) {
   SParseContext* pParCxt = pCxt->pParseCxt;
-  int32_t code = collectUseDatabase(pDbFName, pCxt->pDbs);
+  int32_t code = collectUseDatabaseImpl(pDbFName, pCxt->pDbs);
   if (TSDB_CODE_SUCCESS == code) {
     code = catalogGetDBVgVersion(pParCxt->pCatalog, pDbFName, pVersion, pDbId, pTableNum);
   }
@@ -256,6 +271,10 @@ static bool findAndSetColumn(SColumnNode* pCol, const STableNode* pTable) {
   bool found = false;
   if (QUERY_NODE_REAL_TABLE == nodeType(pTable)) {
     const STableMeta* pMeta = ((SRealTableNode*)pTable)->pMeta;
+    if (PRIMARYKEY_TIMESTAMP_COL_ID == pCol->colId && 0 == strcmp(pCol->colName, PK_TS_COL_INTERNAL_NAME)) {
+      setColumnInfoBySchema((SRealTableNode*)pTable, pMeta->schema, false, pCol);
+      return true;
+    }
     int32_t nums = pMeta->tableInfo.numOfTags + pMeta->tableInfo.numOfColumns;
     for (int32_t i = 0; i < nums; ++i) {
       if (0 == strcmp(pCol->colName, pMeta->schema[i].name)) {
@@ -388,7 +407,7 @@ static EDealRes translateValue(STranslateContext* pCxt, SValueNode* pVal) {
           return generateDealNodeErrMsg(pCxt, TSDB_CODE_OUT_OF_MEMORY);
         }
         varDataSetLen(pVal->datum.p, pVal->node.resType.bytes);
-        strcpy(varDataVal(pVal->datum.p), pVal->literal);
+        strncpy(varDataVal(pVal->datum.p), pVal->literal, pVal->node.resType.bytes);
         break;
       }
       case TSDB_DATA_TYPE_TIMESTAMP: {
@@ -599,9 +618,9 @@ static int32_t toVgroupsInfo(SArray* pVgs, SVgroupsInfo** pVgsInfo) {
 
 static int32_t setSysTableVgroupList(STranslateContext* pCxt, SName* pName, SRealTableNode* pRealTable) {
   // todo release
-  // if (0 != strcmp(pRealTable->table.tableName, TSDB_INS_TABLE_USER_TABLES)) {
-  //   return TSDB_CODE_SUCCESS;
-  // }
+  if (0 != strcmp(pRealTable->table.tableName, TSDB_INS_TABLE_USER_TABLES)) {
+    return TSDB_CODE_SUCCESS;
+  }
 
   int32_t code = TSDB_CODE_SUCCESS;
   SArray* vgroupList = NULL;
@@ -613,9 +632,9 @@ static int32_t setSysTableVgroupList(STranslateContext* pCxt, SName* pName, SRea
 
   if (TSDB_CODE_SUCCESS == code) {
     // todo remove
-    if (NULL != vgroupList && taosArrayGetSize(vgroupList) > 0 && 0 != strcmp(pRealTable->table.tableName, TSDB_INS_TABLE_USER_TABLES)) {
-      taosArrayPopTailBatch(vgroupList, taosArrayGetSize(vgroupList) - 1);
-    }
+    //if (NULL != vgroupList && taosArrayGetSize(vgroupList) > 0 && 0 != strcmp(pRealTable->table.tableName, TSDB_INS_TABLE_USER_TABLES)) {
+    //  taosArrayPopTailBatch(vgroupList, taosArrayGetSize(vgroupList) - 1);
+    //}
 
     code = toVgroupsInfo(vgroupList, &pRealTable->pVgroupList);
   }
@@ -1433,6 +1452,7 @@ static int32_t getSmaIndexBuildAst(STranslateContext* pCxt, SCreateIndexStmt* pS
   if (NULL == pSelect) {
     return TSDB_CODE_OUT_OF_MEMORY;
   }
+  sprintf(pSelect->stmtName, "%p", pSelect);
 
   SRealTableNode* pTable = nodesMakeNode(QUERY_NODE_REAL_TABLE);
   if (NULL == pTable) {
@@ -1448,6 +1468,10 @@ static int32_t getSmaIndexBuildAst(STranslateContext* pCxt, SCreateIndexStmt* pS
     nodesDestroyNode(pSelect);
     return TSDB_CODE_OUT_OF_MEMORY;
   }
+  SNode* pProject = NULL;
+  FOREACH(pProject, pSelect->pProjectionList) {
+    sprintf(((SExprNode*)pProject)->aliasName, "#sma_%p", pProject);
+  }
 
   SIntervalWindowNode* pInterval = nodesMakeNode(QUERY_NODE_INTERVAL_WINDOW);
   if (NULL == pInterval) {
@@ -1455,14 +1479,18 @@ static int32_t getSmaIndexBuildAst(STranslateContext* pCxt, SCreateIndexStmt* pS
     return TSDB_CODE_OUT_OF_MEMORY;
   }
   pSelect->pWindow = (SNode*)pInterval;
+  pInterval->pCol = nodesMakeNode(QUERY_NODE_COLUMN);
   pInterval->pInterval = nodesCloneNode(pStmt->pOptions->pInterval);
   pInterval->pOffset = nodesCloneNode(pStmt->pOptions->pOffset);
   pInterval->pSliding = nodesCloneNode(pStmt->pOptions->pSliding);
-  if (NULL == pInterval->pInterval || (NULL != pStmt->pOptions->pOffset && NULL == pInterval->pOffset) ||
+  if (NULL == pInterval->pCol || NULL == pInterval->pInterval || 
+      (NULL != pStmt->pOptions->pOffset && NULL == pInterval->pOffset) ||
       (NULL != pStmt->pOptions->pSliding && NULL == pInterval->pSliding)) {
     nodesDestroyNode(pSelect);
     return TSDB_CODE_OUT_OF_MEMORY;
   }
+  ((SColumnNode*)pInterval->pCol)->colId = PRIMARYKEY_TIMESTAMP_COL_ID;
+  strcpy(((SColumnNode*)pInterval->pCol)->colName, PK_TS_COL_INTERNAL_NAME);
 
   int32_t code = translateQuery(pCxt, (SNode*)pSelect);
   if (TSDB_CODE_SUCCESS == code) {
@@ -1772,7 +1800,7 @@ static int32_t translateSubquery(STranslateContext* pCxt, SNode* pNode) {
 }
 
 int32_t qExtractResultSchema(const SNode* pRoot, int32_t* numOfCols, SSchema** pSchema) {
-  if (QUERY_NODE_SELECT_STMT == nodeType(pRoot)) {
+  if (NULL != pRoot && QUERY_NODE_SELECT_STMT == nodeType(pRoot)) {
     SSelectStmt* pSelect = (SSelectStmt*) pRoot;
     *numOfCols = LIST_LENGTH(pSelect->pProjectionList);
     *pSchema = taosMemoryCalloc((*numOfCols), sizeof(SSchema));
@@ -1850,6 +1878,7 @@ static int32_t createSelectStmtForShow(ENodeType showType, SSelectStmt** pStmt)
   if (NULL == pSelect) {
     return TSDB_CODE_OUT_OF_MEMORY;
   }
+  sprintf(pSelect->stmtName, "%p", pSelect);
 
   SRealTableNode* pTable = nodesMakeNode(QUERY_NODE_REAL_TABLE);
   if (NULL == pTable) {
@@ -1858,6 +1887,7 @@ static int32_t createSelectStmtForShow(ENodeType showType, SSelectStmt** pStmt)
   }
   strcpy(pTable->table.dbName, TSDB_INFORMATION_SCHEMA_DB);
   strcpy(pTable->table.tableName, getSysTableName(showType));
+  strcpy(pTable->table.tableAlias, pTable->table.tableName);
   pSelect->pFromTable = (SNode*)pTable;
 
   *pStmt = pSelect;
@@ -1947,6 +1977,7 @@ static int32_t rewriteShow(STranslateContext* pCxt, SQuery* pQuery) {
     code = createShowCondition((SShowStmt*)pQuery->pRoot, pStmt);
   }
   if (TSDB_CODE_SUCCESS == code) {
+    pQuery->showRewrite = true;
     nodesDestroyNode(pQuery->pRoot);
     pQuery->pRoot = (SNode*)pStmt;
   }
@@ -2369,13 +2400,14 @@ static int32_t rewriteQuery(STranslateContext* pCxt, SQuery* pQuery) {
 }
 
 static int32_t setQuery(STranslateContext* pCxt, SQuery* pQuery) {
-  int32_t code = TSDB_CODE_SUCCESS;
   switch (nodeType(pQuery->pRoot)) {
     case QUERY_NODE_SELECT_STMT:
       pQuery->haveResultSet = true;
       pQuery->directRpc = false;
       pQuery->msgType = TDMT_VND_QUERY;
-      code = qExtractResultSchema(pQuery->pRoot, &pQuery->numOfResCols, &pQuery->pResSchema);
+      if (TSDB_CODE_SUCCESS != qExtractResultSchema(pQuery->pRoot, &pQuery->numOfResCols, &pQuery->pResSchema)) {
+        return TSDB_CODE_OUT_OF_MEMORY;
+      }
       break;
     case QUERY_NODE_VNODE_MODIF_STMT:
       pQuery->haveResultSet = false;
@@ -2415,7 +2447,7 @@ static int32_t setQuery(STranslateContext* pCxt, SQuery* pQuery) {
     }
   }
 
-  return code;
+  return TSDB_CODE_SUCCESS;
 }
 
 int32_t doTranslate(SParseContext* pParseCxt, SQuery* pQuery) {

source/libs/planner/inc/planInt.h

@@ -22,32 +22,6 @@ extern "C" {
 
 #include "planner.h"
 
-#define CHECK_ALLOC(p, res) \
-  do { \
-    if (NULL == (p)) { \
-      pCxt->errCode = TSDB_CODE_OUT_OF_MEMORY; \
-      return (res); \
-    } \
-  } while (0)
-
-#define CHECK_CODE(exec, res) \
-  do { \
-    int32_t code = (exec); \
-    if (TSDB_CODE_SUCCESS != code) { \
-      pCxt->errCode = code; \
-      return (res); \
-    } \
-  } while (0)
-
-#define CHECK_CODE_EXT(exec) \
-  do { \
-    int32_t code = (exec); \
-    if (TSDB_CODE_SUCCESS != code) { \
-      pCxt->errCode = code; \
-      return code; \
-    } \
-  } while (0)
-
 #define planFatal(param, ...)  qFatal("PLAN: " param, __VA_ARGS__)
 #define planError(param, ...)  qError("PLAN: " param, __VA_ARGS__)
 #define planWarn(param, ...)   qWarn("PLAN: " param, __VA_ARGS__)

source/libs/planner/src/planLogicCreater.c

@@ -45,7 +45,9 @@ static EDealRes doRewriteExpr(SNode** pNode, void* pContext) {
         }
         if (nodesEqualNode(pExpr, *pNode)) {
           SColumnNode* pCol = (SColumnNode*)nodesMakeNode(QUERY_NODE_COLUMN);
-          CHECK_ALLOC(pCol, DEAL_RES_ERROR);
+          if (NULL == pCol) {
+            return DEAL_RES_ERROR;
+          }
           SExprNode* pToBeRewrittenExpr = (SExprNode*)(*pNode);
           pCol->node.resType = pToBeRewrittenExpr->resType;
           strcpy(pCol->node.aliasName, pToBeRewrittenExpr->aliasName);
@@ -65,17 +67,12 @@ static EDealRes doRewriteExpr(SNode** pNode, void* pContext) {
   return DEAL_RES_CONTINUE;
 }
 
-typedef struct SNameExprCxt {
-  int32_t rewriteId;
-} SNameExprCxt;
-
 static EDealRes doNameExpr(SNode* pNode, void* pContext) {
   switch (nodeType(pNode)) {
     case QUERY_NODE_OPERATOR:
     case QUERY_NODE_LOGIC_CONDITION:
     case QUERY_NODE_FUNCTION: {
-      SNameExprCxt* pCxt = (SNameExprCxt*)pContext;
-      sprintf(((SExprNode*)pNode)->aliasName, "#expr_%d", pCxt->rewriteId++);
+      sprintf(((SExprNode*)pNode)->aliasName, "#expr_%p", pNode);
       return DEAL_RES_IGNORE_CHILD;
     }
     default:
@@ -86,9 +83,7 @@ static EDealRes doNameExpr(SNode* pNode, void* pContext) {
 }
 
 static int32_t rewriteExpr(SNodeList* pExprs, SSelectStmt* pSelect, ESqlClause clause) {
-  static int32_t rewriteId = 1;
-  SNameExprCxt nameCxt = { .rewriteId = rewriteId };
-  nodesWalkList(pExprs, doNameExpr, &nameCxt);
+  nodesWalkList(pExprs, doNameExpr, NULL);
   SRewriteExprCxt cxt = { .errCode = TSDB_CODE_SUCCESS, .pExprs = pExprs };
   nodesRewriteSelectStmt(pSelect, clause, doRewriteExpr, &cxt);
   return cxt.errCode;
@@ -161,6 +156,7 @@ static int32_t createScanLogicNode(SLogicPlanContext* pCxt, SSelectStmt* pSelect
   pScan->tableName.acctId = pCxt->pPlanCxt->acctId;
   strcpy(pScan->tableName.dbname, pRealTable->table.dbName);
   strcpy(pScan->tableName.tname, pRealTable->table.tableName);
+  pScan->showRewrite = pCxt->pPlanCxt->showRewrite;
 
   // set columns to scan
   SNodeList* pCols = NULL;
@@ -290,13 +286,14 @@ static int32_t createLogicNodeByTable(SLogicPlanContext* pCxt, SSelectStmt* pSel
   return code;
 }
 
-static SColumnNode* createColumnByExpr(SExprNode* pExpr) {
+static SColumnNode* createColumnByExpr(const char* pStmtName, SExprNode* pExpr) {
   SColumnNode* pCol = nodesMakeNode(QUERY_NODE_COLUMN);
   if (NULL == pCol) {
     return NULL;
   }
   pCol->node.resType = pExpr->resType;
   strcpy(pCol->colName, pExpr->aliasName);
+  strcpy(pCol->tableAlias, pStmtName);
   return pCol;
 }
 
@@ -310,20 +307,22 @@ static EDealRes doCreateColumn(SNode* pNode, void* pContext) {
   switch (nodeType(pNode)) {
     case QUERY_NODE_COLUMN: {
       SNode* pCol = nodesCloneNode(pNode);
-      CHECK_ALLOC(pCol, DEAL_RES_ERROR);
-      CHECK_CODE(nodesListAppend(pCxt->pList, pCol), DEAL_RES_ERROR);
-      return DEAL_RES_IGNORE_CHILD;
+      if (NULL == pCol) {
+        return DEAL_RES_ERROR;
+      }
+      return (TSDB_CODE_SUCCESS == nodesListAppend(pCxt->pList, pCol) ? DEAL_RES_IGNORE_CHILD : DEAL_RES_ERROR);
     }
     case QUERY_NODE_OPERATOR:
     case QUERY_NODE_LOGIC_CONDITION:
     case QUERY_NODE_FUNCTION: {
       SExprNode* pExpr = (SExprNode*)pNode;
       SColumnNode* pCol = (SColumnNode*)nodesMakeNode(QUERY_NODE_COLUMN);
-      CHECK_ALLOC(pCol, DEAL_RES_ERROR);
+      if (NULL == pCol) {
+        return DEAL_RES_ERROR;
+      }
       pCol->node.resType = pExpr->resType;
       strcpy(pCol->colName, pExpr->aliasName);
-      CHECK_CODE(nodesListAppend(pCxt->pList, (SNode*)pCol), DEAL_RES_ERROR);
-      return DEAL_RES_IGNORE_CHILD;
+      return (TSDB_CODE_SUCCESS == nodesListAppend(pCxt->pList, pCol) ? DEAL_RES_IGNORE_CHILD : DEAL_RES_ERROR);
     }
     default:
       break;
@@ -456,6 +455,12 @@ static int32_t createWindowLogicNodeByInterval(SLogicPlanContext* pCxt, SInterva
   pWindow->sliding = (NULL != pInterval->pSliding ? ((SValueNode*)pInterval->pSliding)->datum.i : pWindow->interval);
   pWindow->slidingUnit = (NULL != pInterval->pSliding ? ((SValueNode*)pInterval->pSliding)->unit : pWindow->intervalUnit);
 
+  pWindow->pTspk = nodesCloneNode(pInterval->pCol);
+  if (NULL == pWindow->pTspk) {
+    nodesDestroyNode(pWindow);
+    return TSDB_CODE_OUT_OF_MEMORY;
+  }
+
   if (NULL != pInterval->pFill) {
     pWindow->pFill = nodesCloneNode(pInterval->pFill);
     if (NULL == pWindow->pFill) {
@@ -484,7 +489,42 @@ static int32_t createWindowLogicNode(SLogicPlanContext* pCxt, SSelectStmt* pSele
   return TSDB_CODE_FAILED;
 }
 
-static int32_t createColumnByProjections(SLogicPlanContext* pCxt, SNodeList* pExprs, SNodeList** pCols) {
+static int32_t createSortLogicNode(SLogicPlanContext* pCxt, SSelectStmt* pSelect, SLogicNode** pLogicNode) {
+  if (NULL == pSelect->pOrderByList) {
+    return TSDB_CODE_SUCCESS;
+  }
+
+  SSortLogicNode* pSort = nodesMakeNode(QUERY_NODE_LOGIC_PLAN_SORT);
+  if (NULL == pSort) {
+    return TSDB_CODE_OUT_OF_MEMORY;
+  }
+
+  SNodeList* pCols = NULL;
+  int32_t code = nodesCollectColumns(pSelect, SQL_CLAUSE_ORDER_BY, NULL, &pCols);
+  if (TSDB_CODE_SUCCESS == code && NULL != pCols) {
+    pSort->node.pTargets = nodesCloneList(pCols);
+    if (NULL == pSort->node.pTargets) {
+      code = TSDB_CODE_OUT_OF_MEMORY;
+    }
+  }
+
+  if (TSDB_CODE_SUCCESS == code) {
+    pSort->pSortKeys = nodesCloneList(pSelect->pOrderByList);
+    if (NULL == pSort->pSortKeys) {
+      code = TSDB_CODE_OUT_OF_MEMORY;
+    }
+  }
+
+  if (TSDB_CODE_SUCCESS == code) {
+    *pLogicNode = (SLogicNode*)pSort;
+  } else {
+    nodesDestroyNode(pSort);
+  }
+
+  return code;
+}
+
+static int32_t createColumnByProjections(SLogicPlanContext* pCxt, const char* pStmtName, SNodeList* pExprs, SNodeList** pCols) {
   SNodeList* pList = nodesMakeList();
   if (NULL == pList) {
     return TSDB_CODE_OUT_OF_MEMORY;
@@ -492,7 +532,7 @@ static int32_t createColumnByProjections(SLogicPlanContext* pCxt, SNodeList* pEx
 
   SNode* pNode;
   FOREACH(pNode, pExprs) {    
-    if (TSDB_CODE_SUCCESS != nodesListAppend(pList, createColumnByExpr((SExprNode*)pNode))) {
+    if (TSDB_CODE_SUCCESS != nodesListAppend(pList, createColumnByExpr(pStmtName, (SExprNode*)pNode))) {
       nodesDestroyList(pList);
       return TSDB_CODE_OUT_OF_MEMORY;
     }
@@ -514,9 +554,10 @@ static int32_t createProjectLogicNode(SLogicPlanContext* pCxt, SSelectStmt* pSel
   if (NULL == pProject->pProjections) {
     code = TSDB_CODE_OUT_OF_MEMORY;
   }
+  strcpy(pProject->stmtName, pSelect->stmtName);
 
   if (TSDB_CODE_SUCCESS == code) {
-    code = createColumnByProjections(pCxt,pSelect->pProjectionList, &pProject->node.pTargets);
+    code = createColumnByProjections(pCxt, pSelect->stmtName, pSelect->pProjectionList, &pProject->node.pTargets);
   }
 
   if (TSDB_CODE_SUCCESS == code) {
@@ -537,6 +578,9 @@ static int32_t createSelectLogicNode(SLogicPlanContext* pCxt, SSelectStmt* pSele
   if (TSDB_CODE_SUCCESS == code) {
     code = createChildLogicNode(pCxt, pSelect, createAggLogicNode, &pRoot);
   }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = createChildLogicNode(pCxt, pSelect, createSortLogicNode, &pRoot);
+  }
   if (TSDB_CODE_SUCCESS == code) {
     code = createChildLogicNode(pCxt, pSelect, createProjectLogicNode, &pRoot);
   }

source/libs/planner/src/planSpliter.c

@@ -65,7 +65,9 @@ static int32_t stsMatch(SSplitContext* pCxt, SLogicSubplan* pSubplan) {
   SLogicNode* pSplitNode = stsMatchByNode(pSubplan->pNode);
   if (NULL != pSplitNode) {
     SStsInfo* pInfo = taosMemoryCalloc(1, sizeof(SStsInfo));
-    CHECK_ALLOC(pInfo, TSDB_CODE_OUT_OF_MEMORY);
+    if (NULL == pInfo) {
+      return TSDB_CODE_OUT_OF_MEMORY;
+    }
     pInfo->pScan = (SScanLogicNode*)pSplitNode;
     pInfo->pSubplan = pSubplan;
     pCxt->pInfo = pInfo;

source/libs/planner/test/plannerTest.cpp

@@ -170,7 +170,7 @@ TEST_F(PlannerTest, groupBy) {
   bind("SELECT count(*) FROM t1");
   ASSERT_TRUE(run());
 
-  bind("SELECT c1, count(*) FROM t1 GROUP BY c1");
+  bind("SELECT c1, max(c3), min(c2), count(*) FROM t1 GROUP BY c1");
   ASSERT_TRUE(run());
 
   bind("SELECT c1 + c3, c1 + count(*) FROM t1 where c2 = 'abc' GROUP BY c1, c3");
@@ -201,10 +201,31 @@ TEST_F(PlannerTest, sessionWindow) {
   ASSERT_TRUE(run());
 }
 
+TEST_F(PlannerTest, orderBy) {
+  setDatabase("root", "test");
+
+  bind("SELECT * FROM t1 order by c1");
+  ASSERT_TRUE(run());
+
+  bind("SELECT c1 FROM t1 order by c2");
+  ASSERT_TRUE(run());
+
+  bind("SELECT * FROM t1 order by c1 + 10, c2");
+  ASSERT_TRUE(run());
+}
+
 TEST_F(PlannerTest, showTables) {
   setDatabase("root", "test");
 
   bind("show tables");
+  ASSERT_TRUE(run());
+}
+
+TEST_F(PlannerTest, showStables) {
+  setDatabase("root", "test");
+
+  bind("show stables");
+  ASSERT_TRUE(run());
 }
 
 TEST_F(PlannerTest, createTopic) {

source/libs/qcom/src/queryUtil.c

@@ -140,7 +140,7 @@ int32_t taosAsyncExec(__async_exec_fn_t execFn, void* execParam, int32_t* code)
   return 0;
 }
 
-int32_t asyncSendMsgToServer(void* pTransporter, SEpSet* epSet, int64_t* pTransporterId, const SMsgSendInfo* pInfo) {
+int32_t asyncSendMsgToServerExt(void* pTransporter, SEpSet* epSet, int64_t* pTransporterId, const SMsgSendInfo* pInfo, bool persistHandle, void *rpcCtx) {
   char* pMsg = rpcMallocCont(pInfo->msgInfo.len);
   if (NULL == pMsg) {
     qError("0x%" PRIx64 " msg:%s malloc failed", pInfo->requestId, TMSG_INFO(pInfo->msgType));
@@ -154,6 +154,7 @@ int32_t asyncSendMsgToServer(void* pTransporter, SEpSet* epSet, int64_t* pTransp
                     .contLen = pInfo->msgInfo.len,
                     .ahandle = (void*)pInfo,
                     .handle = pInfo->msgInfo.handle,
+                    .persistHandle = persistHandle,
                     .code = 0};
   if (pInfo->msgType == TDMT_VND_QUERY || pInfo->msgType == TDMT_VND_FETCH ||
       pInfo->msgType == TDMT_VND_QUERY_CONTINUE) {
@@ -162,10 +163,14 @@ int32_t asyncSendMsgToServer(void* pTransporter, SEpSet* epSet, int64_t* pTransp
 
   assert(pInfo->fp != NULL);
 
-  rpcSendRequest(pTransporter, epSet, &rpcMsg, pTransporterId);
+  rpcSendRequestWithCtx(pTransporter, epSet, &rpcMsg, pTransporterId, rpcCtx);
   return TSDB_CODE_SUCCESS;
 }
 
+int32_t asyncSendMsgToServer(void* pTransporter, SEpSet* epSet, int64_t* pTransporterId, const SMsgSendInfo* pInfo) {
+  return asyncSendMsgToServerExt(pTransporter, epSet, pTransporterId, pInfo, false, NULL);
+}
+
 char *jobTaskStatusStr(int32_t status) {
   switch (status) {
     case JOB_TASK_STATUS_NULL:

source/libs/qworker/inc/qworkerInt.h

@@ -69,18 +69,24 @@ enum {
 typedef struct SQWDebug {
   bool lockEnable;
   bool statusEnable;
+  bool dumpEnable;
 } SQWDebug;
 
+typedef struct SQWConnInfo {
+  void *handle;
+  void *ahandle;
+} SQWConnInfo;
+
 typedef struct SQWMsg {
-  void   *node;
-  char   *msg;
-  int32_t msgLen;
-  void   *connection;
+  void        *node;
+  char        *msg;
+  int32_t      msgLen;
+  SQWConnInfo  connInfo;
 } SQWMsg;
 
 typedef struct SQWHbInfo {
   SSchedulerHbRsp  rsp;
-  void            *connection;
+  SQWConnInfo      connInfo;
 } SQWHbInfo;
 
 typedef struct SQWPhaseInput {
@@ -101,10 +107,6 @@ typedef struct SQWTaskCtx {
   SRWLatch        lock;
   int8_t          phase;
   int8_t          taskType;
-
-  void           *readyConnection;
-  void           *dropConnection;
-  void           *cancelConnection;
   
   bool            emptyRes;
   bool            queryFetched;
@@ -113,6 +115,7 @@ typedef struct SQWTaskCtx {
   bool            queryInQueue;
   int32_t         rspCode; 
 
+  SQWConnInfo     connInfo;
   int8_t          events[QW_EVENT_MAX];
   
   qTaskInfo_t     taskHandle;
@@ -120,11 +123,12 @@ typedef struct SQWTaskCtx {
 } SQWTaskCtx;
 
 typedef struct SQWSchStatus {
-  int32_t   lastAccessTs; // timestamp in second
-  uint64_t  hbSeqId;
-  void     *hbConnection;
-  SRWLatch  tasksLock;
-  SHashObj *tasksHash;   // key:queryId+taskId, value: SQWTaskStatus
+  int32_t        lastAccessTs; // timestamp in second
+  SRWLatch       hbConnLock;
+  SQWConnInfo    hbConnInfo;
+  SQueryNodeEpId hbEpId;  
+  SRWLatch       tasksLock;
+  SHashObj      *tasksHash;   // key:queryId+taskId, value: SQWTaskStatus
 } SQWSchStatus;
 
 // Qnode/Vnode level task management
@@ -172,12 +176,16 @@ typedef struct SQWorkerMgmt {
 #define QW_ELOG(param, ...) qError("QW:%p " param, mgmt, __VA_ARGS__)
 #define QW_DLOG(param, ...) qDebug("QW:%p " param, mgmt, __VA_ARGS__)
 
+#define QW_DUMP(param, ...) do { if (gQWDebug.dumpEnable) { qDebug("QW:%p " param, mgmt, __VA_ARGS__); } } while (0)
+
+
 #define QW_SCH_ELOG(param, ...) qError("QW:%p SID:%"PRIx64" " param, mgmt, sId, __VA_ARGS__)
 #define QW_SCH_DLOG(param, ...) qDebug("QW:%p SID:%"PRIx64" " param, mgmt, sId, __VA_ARGS__)
 
 #define QW_TASK_ELOG(param, ...) qError("QW:%p QID:0x%"PRIx64",TID:0x%"PRIx64" " param, mgmt, qId, tId, __VA_ARGS__)
 #define QW_TASK_WLOG(param, ...) qWarn("QW:%p QID:0x%"PRIx64",TID:0x%"PRIx64" " param, mgmt, qId, tId, __VA_ARGS__)
 #define QW_TASK_DLOG(param, ...) qDebug("QW:%p QID:0x%"PRIx64",TID:0x%"PRIx64" " param, mgmt, qId, tId, __VA_ARGS__)
+#define QW_TASK_DLOGL(param, ...) qDebugL("QW:%p QID:0x%"PRIx64",TID:0x%"PRIx64" " param, mgmt, qId, tId, __VA_ARGS__)
 
 #define QW_TASK_ELOG_E(param) qError("QW:%p QID:0x%"PRIx64",TID:0x%"PRIx64" " param, mgmt, qId, tId)
 #define QW_TASK_WLOG_E(param) qWarn("QW:%p QID:0x%"PRIx64",TID:0x%"PRIx64" " param, mgmt, qId, tId)
@@ -223,8 +231,6 @@ typedef struct SQWorkerMgmt {
   }                                                       \
 } while (0)
 
-int32_t qwBuildAndSendCancelRsp(SRpcMsg *pMsg, int32_t code);
-
 #ifdef __cplusplus
 }
 #endif

source/libs/qworker/inc/qworkerMsg.h

@@ -30,17 +30,18 @@ int32_t qwProcessFetch(QW_FPARAMS_DEF, SQWMsg *qwMsg);
 int32_t qwProcessDrop(QW_FPARAMS_DEF, SQWMsg *qwMsg);
 int32_t qwProcessHb(SQWorkerMgmt *mgmt, SQWMsg *qwMsg, SSchedulerHbReq *req);
 
-int32_t qwBuildAndSendDropRsp(void *connection, int32_t code);
-int32_t qwBuildAndSendCancelRsp(SRpcMsg *pMsg, int32_t code);
-int32_t qwBuildAndSendFetchRsp(void *connection, SRetrieveTableRsp *pRsp, int32_t dataLength, int32_t code);
+int32_t qwBuildAndSendDropRsp(SQWConnInfo *pConn, int32_t code);
+int32_t qwBuildAndSendCancelRsp(SQWConnInfo *pConn, int32_t code);
+int32_t qwBuildAndSendFetchRsp(SQWConnInfo *pConn, SRetrieveTableRsp *pRsp, int32_t dataLength, int32_t code);
 void qwBuildFetchRsp(void *msg, SOutputData *input, int32_t len, bool qComplete);
-int32_t qwBuildAndSendCQueryMsg(QW_FPARAMS_DEF, void *connection);
-int32_t qwBuildAndSendReadyRsp(void *connection, int32_t code);
-int32_t qwBuildAndSendQueryRsp(void *connection, int32_t code);
+int32_t qwBuildAndSendCQueryMsg(QW_FPARAMS_DEF, SQWConnInfo *pConn);
+int32_t qwBuildAndSendReadyRsp(SQWConnInfo *pConn, int32_t code);
+int32_t qwBuildAndSendQueryRsp(SQWConnInfo *pConn, int32_t code);
 void qwFreeFetchRsp(void *msg);
 int32_t qwMallocFetchRsp(int32_t length, SRetrieveTableRsp **rsp);
 int32_t qwGetSchTasksStatus(SQWorkerMgmt *mgmt, uint64_t sId, SSchedulerStatusRsp **rsp);
-int32_t qwBuildAndSendHbRsp(SRpcMsg *pMsg, SSchedulerHbRsp *rsp, int32_t code);
+int32_t qwBuildAndSendHbRsp(SQWConnInfo *pConn, SSchedulerHbRsp *rsp, int32_t code);
+int32_t qwRegisterBrokenLinkArg(QW_FPARAMS_DEF, SQWConnInfo *pConn);
 
 
 

source/libs/qworker/src/qworker.c

@@ -9,7 +9,7 @@
 #include "tname.h"
 #include "dataSinkMgt.h"
 
-SQWDebug gQWDebug = {.statusEnable = true};
+SQWDebug gQWDebug = {.statusEnable = true, .dumpEnable = true};
 
 int32_t qwDbgValidateStatus(QW_FPARAMS_DEF, int8_t oriStatus, int8_t newStatus, bool *ignore) {
   if (!gQWDebug.statusEnable) {
@@ -103,6 +103,36 @@ _return:
   QW_RET(code);
 }
 
+void qwDbgDumpSchInfo(SQWSchStatus *sch, int32_t i) {
+
+}
+
+void qwDbgDumpMgmtInfo(SQWorkerMgmt *mgmt) {
+  if (!gQWDebug.dumpEnable) {
+    return;
+  }
+
+  QW_LOCK(QW_READ, &mgmt->schLock);
+  
+  QW_DUMP("total remain schduler num:%d", taosHashGetSize(mgmt->schHash));
+
+  void *key = NULL;
+  size_t keyLen = 0;
+  int32_t i = 0;
+  SQWSchStatus *sch = NULL;
+
+  void *pIter = taosHashIterate(mgmt->schHash, NULL);
+  while (pIter) {
+    sch = (SQWSchStatus *)pIter;
+    qwDbgDumpSchInfo(sch, i);
+    ++i;
+    pIter = taosHashIterate(mgmt->schHash, pIter);
+  }
+
+  QW_UNLOCK(QW_READ, &mgmt->schLock);
+
+  QW_DUMP("total remain ctx num:%d", taosHashGetSize(mgmt->ctxHash));
+}
 
 char *qwPhaseStr(int32_t phase) {
   switch (phase) {
@@ -166,7 +196,7 @@ int32_t qwSetTaskStatus(QW_FPARAMS_DEF, SQWTaskStatus *task, int8_t status) {
 }
 
 
-int32_t qwAddSchedulerImpl(SQWorkerMgmt *mgmt, uint64_t sId, int32_t rwType, SQWSchStatus **sch) {
+int32_t qwAddSchedulerImpl(SQWorkerMgmt *mgmt, uint64_t sId, int32_t rwType) {
   SQWSchStatus newSch = {0};
   newSch.tasksHash = taosHashInit(mgmt->cfg.maxSchTaskNum, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), false, HASH_NO_LOCK);
   if (NULL == newSch.tasksHash) {
@@ -200,7 +230,7 @@ int32_t qwAcquireSchedulerImpl(SQWorkerMgmt *mgmt, uint64_t sId, int32_t rwType,
       QW_UNLOCK(rwType, &mgmt->schLock);
       
       if (QW_NOT_EXIST_ADD == nOpt) {
-        QW_ERR_RET(qwAddSchedulerImpl(mgmt, sId, rwType, sch));
+        QW_ERR_RET(qwAddSchedulerImpl(mgmt, sId, rwType));
 
         nOpt = QW_NOT_EXIST_RET_ERR;
         
@@ -402,6 +432,9 @@ int32_t qwKillTaskHandle(QW_FPARAMS_DEF, SQWTaskCtx *ctx) {
 
 
 void qwFreeTask(QW_FPARAMS_DEF, SQWTaskCtx *ctx) {
+  rpcReleaseHandle(ctx->connInfo.handle, TAOS_CONN_SERVER);
+  ctx->connInfo.handle = NULL;
+
   qwFreeTaskHandle(QW_FPARAMS(), &ctx->taskHandle);
   
   if (ctx->sinkHandle) {
@@ -516,7 +549,7 @@ int32_t qwExecTask(QW_FPARAMS_DEF, SQWTaskCtx *ctx, bool *queryEnd) {
  
   while (true) {
     QW_TASK_DLOG("start to execTask, loopIdx:%d", i++);
-    
+
     code = qExecTask(*taskHandle, &pRes, &useconds);
     if (code) {
       QW_TASK_ELOG("qExecTask failed, code:%x - %s", code, tstrerror(code));
@@ -577,6 +610,9 @@ int32_t qwExecTask(QW_FPARAMS_DEF, SQWTaskCtx *ctx, bool *queryEnd) {
 int32_t qwGenerateSchHbRsp(SQWorkerMgmt *mgmt, SQWSchStatus *sch, SQWHbInfo *hbInfo) {
   int32_t taskNum = 0;
 
+  hbInfo->connInfo = sch->hbConnInfo;
+  hbInfo->rsp.epId = sch->hbEpId;
+
   QW_LOCK(QW_READ, &sch->tasksLock);
   
   taskNum = taosHashGetSize(sch->tasksHash);
@@ -588,9 +624,6 @@ int32_t qwGenerateSchHbRsp(SQWorkerMgmt *mgmt, SQWSchStatus *sch, SQWHbInfo *hbI
     return TSDB_CODE_QRY_OUT_OF_MEMORY;
   }
 
-  hbInfo->connection = sch->hbConnection;
-  hbInfo->rsp.seqId = -1;
-
   void *key = NULL;
   size_t keyLen = 0;
   int32_t i = 0;
@@ -694,8 +727,8 @@ int32_t qwGetResFromSink(QW_FPARAMS_DEF, SQWTaskCtx *ctx, int32_t *dataLen, void
 int32_t qwHandlePrePhaseEvents(QW_FPARAMS_DEF, int8_t phase, SQWPhaseInput *input, SQWPhaseOutput *output) {
   int32_t code = 0;
   SQWTaskCtx *ctx = NULL;
-  void *dropConnection = NULL;
-  void *cancelConnection = NULL;
+  SQWConnInfo *dropConnection = NULL;
+  SQWConnInfo *cancelConnection = NULL;
 
   QW_TASK_DLOG("start to handle event at phase %s", qwPhaseStr(phase));
 
@@ -727,9 +760,13 @@ int32_t qwHandlePrePhaseEvents(QW_FPARAMS_DEF, int8_t phase, SQWPhaseInput *inpu
       }
 
       if (QW_IS_EVENT_RECEIVED(ctx, QW_EVENT_DROP)) {
+        dropConnection = &ctx->connInfo;
         QW_ERR_JRET(qwDropTask(QW_FPARAMS()));
+        dropConnection = NULL;
+        
+        qwBuildAndSendDropRsp(&ctx->connInfo, code);    
+        QW_TASK_DLOG("drop rsp send, handle:%p, code:%x - %s", ctx->connInfo.handle, code, tstrerror(code));
 
-        dropConnection = ctx->dropConnection;
         QW_ERR_JRET(TSDB_CODE_QRY_TASK_DROPPED);
         break;
       }
@@ -761,9 +798,13 @@ int32_t qwHandlePrePhaseEvents(QW_FPARAMS_DEF, int8_t phase, SQWPhaseInput *inpu
       }
 
       if (QW_IS_EVENT_RECEIVED(ctx, QW_EVENT_DROP)) {
+        dropConnection = &ctx->connInfo;
         QW_ERR_JRET(qwDropTask(QW_FPARAMS()));
+        dropConnection = NULL;
 
-        dropConnection = ctx->dropConnection;
+        qwBuildAndSendDropRsp(&ctx->connInfo, code);
+        QW_TASK_DLOG("drop rsp send, handle:%p, code:%x - %s", ctx->connInfo.handle, code, tstrerror(code));
+        
         QW_ERR_JRET(TSDB_CODE_QRY_TASK_DROPPED);
       }
 
@@ -789,13 +830,13 @@ _return:
   }
 
   if (dropConnection) {
-    qwBuildAndSendDropRsp(dropConnection, code);
-    QW_TASK_DLOG("drop msg rsped, code:%x - %s", code, tstrerror(code));
+    qwBuildAndSendDropRsp(dropConnection, code);    
+    QW_TASK_DLOG("drop rsp send, handle:%p, code:%x - %s", dropConnection->handle, code, tstrerror(code));
   }
 
   if (cancelConnection) {
-    qwBuildAndSendCancelRsp(cancelConnection, code);
-    QW_TASK_DLOG("cancel msg rsped, code:%x - %s", code, tstrerror(code));
+    qwBuildAndSendCancelRsp(cancelConnection, code);    
+    QW_TASK_DLOG("cancel rsp send, handle:%p, code:%x - %s", cancelConnection->handle, code, tstrerror(code));
   }
 
   QW_TASK_DLOG("end to handle event at phase %s, code:%x - %s", qwPhaseStr(phase), code, tstrerror(code));
@@ -807,9 +848,8 @@ _return:
 int32_t qwHandlePostPhaseEvents(QW_FPARAMS_DEF, int8_t phase, SQWPhaseInput *input, SQWPhaseOutput *output) {
   int32_t code = 0;
   SQWTaskCtx *ctx = NULL;
-  void *readyConnection = NULL;
-  void *dropConnection = NULL;
-  void *cancelConnection = NULL;
+  SQWConnInfo connInfo = {0};
+  SQWConnInfo *readyConnection = NULL;
 
   QW_TASK_DLOG("start to handle event at phase %s", qwPhaseStr(phase));
   
@@ -826,11 +866,18 @@ int32_t qwHandlePostPhaseEvents(QW_FPARAMS_DEF, int8_t phase, SQWPhaseInput *inp
     if (NULL == ctx->taskHandle && NULL == ctx->sinkHandle) {
       ctx->emptyRes = true;
     }
-    
+
+#if 0    
     if (QW_IS_EVENT_RECEIVED(ctx, QW_EVENT_READY)) {
-      readyConnection = ctx->readyConnection;
+      readyConnection = &ctx->connInfo;
       QW_SET_EVENT_PROCESSED(ctx, QW_EVENT_READY);
     }
+#else
+    connInfo.handle = ctx->connInfo.handle;
+    readyConnection = &connInfo;
+    
+    QW_SET_EVENT_PROCESSED(ctx, QW_EVENT_READY);
+#endif
   }
 
   if (QW_IS_EVENT_RECEIVED(ctx, QW_EVENT_DROP)) {
@@ -838,10 +885,11 @@ int32_t qwHandlePostPhaseEvents(QW_FPARAMS_DEF, int8_t phase, SQWPhaseInput *inp
       QW_TASK_WLOG("drop received at wrong phase %s", qwPhaseStr(phase));
       QW_ERR_JRET(TSDB_CODE_QRY_APP_ERROR);
     }
+
+    qwBuildAndSendDropRsp(&ctx->connInfo, code);    
+    QW_TASK_DLOG("drop rsp send, handle:%p, code:%x - %s", ctx->connInfo.handle, code, tstrerror(code));
     
     QW_ERR_JRET(qwDropTask(QW_FPARAMS()));
-
-    dropConnection = ctx->dropConnection;
     QW_ERR_JRET(TSDB_CODE_QRY_TASK_DROPPED);
   }
 
@@ -870,18 +918,8 @@ _return:
   }
 
   if (readyConnection) {
-    qwBuildAndSendReadyRsp(readyConnection, code);
-    QW_TASK_DLOG("ready msg rsped, code:%x - %s", code, tstrerror(code));
-  }
-
-  if (dropConnection) {
-    qwBuildAndSendDropRsp(dropConnection, code);
-    QW_TASK_DLOG("drop msg rsped, code:%x - %s", code, tstrerror(code));
-  }
-
-  if (cancelConnection) {
-    qwBuildAndSendCancelRsp(cancelConnection, code);
-    QW_TASK_DLOG("cancel msg rsped, code:%x - %s", code, tstrerror(code));
+    qwBuildAndSendReadyRsp(readyConnection, code);    
+    QW_TASK_DLOG("ready msg rsped, handle:%p, code:%x - %s", readyConnection->handle, code, tstrerror(code));
   }
 
   if (code) {
@@ -893,23 +931,28 @@ _return:
   QW_RET(code);
 }
 
-
 int32_t qwProcessQuery(QW_FPARAMS_DEF, SQWMsg *qwMsg, int8_t taskType) {
   int32_t code = 0;
   bool queryRsped = false;
-  bool needStop = false;
   struct SSubplan *plan = NULL;
   SQWPhaseInput input = {0};
   qTaskInfo_t pTaskInfo = NULL;
   DataSinkHandle sinkHandle = NULL;
   SQWTaskCtx *ctx = NULL;
 
+  QW_ERR_JRET(qwRegisterBrokenLinkArg(QW_FPARAMS(), &qwMsg->connInfo));
+
   QW_ERR_JRET(qwHandlePrePhaseEvents(QW_FPARAMS(), QW_PHASE_PRE_QUERY, &input, NULL));
 
   QW_ERR_JRET(qwGetTaskCtx(QW_FPARAMS(), &ctx));
   
   atomic_store_8(&ctx->taskType, taskType);
-  
+
+  atomic_store_ptr(&ctx->connInfo.handle, qwMsg->connInfo.handle);
+  atomic_store_ptr(&ctx->connInfo.ahandle, qwMsg->connInfo.ahandle);
+
+  QW_TASK_DLOGL("subplan json string, len:%d, %s", qwMsg->msgLen, qwMsg->msg);
+
   code = qStringToSubplan(qwMsg->msg, &plan);
   if (TSDB_CODE_SUCCESS != code) {
     QW_TASK_ELOG("task string to subplan failed, code:%x - %s", code, tstrerror(code));
@@ -927,8 +970,8 @@ int32_t qwProcessQuery(QW_FPARAMS_DEF, SQWMsg *qwMsg, int8_t taskType) {
     QW_ERR_JRET(TSDB_CODE_QRY_APP_ERROR);
   }
 
-  QW_ERR_JRET(qwBuildAndSendQueryRsp(qwMsg->connection, code));
-  QW_TASK_DLOG("query msg rsped, code:%x - %s", code, tstrerror(code));
+  QW_ERR_JRET(qwBuildAndSendQueryRsp(&qwMsg->connInfo, code));
+  QW_TASK_DLOG("query msg rsped, handle:%p, code:%x - %s", qwMsg->connInfo.handle, code, tstrerror(code));
 
   queryRsped = true;
 
@@ -945,11 +988,11 @@ _return:
   code = qwHandlePostPhaseEvents(QW_FPARAMS(), QW_PHASE_POST_QUERY, &input, NULL);
   
   if (!queryRsped) {
-    qwBuildAndSendQueryRsp(qwMsg->connection, code);
-    QW_TASK_DLOG("query msg rsped, code:%x - %s", code, tstrerror(code));
+    qwBuildAndSendQueryRsp(&qwMsg->connInfo, code);
+    QW_TASK_DLOG("query msg rsped, handle:%p, code:%x - %s", qwMsg->connInfo.handle, code, tstrerror(code));
   }
 
-  QW_RET(code);
+  QW_RET(TSDB_CODE_SUCCESS);
 }
 
 int32_t qwProcessReady(QW_FPARAMS_DEF, SQWMsg *qwMsg) {
@@ -968,8 +1011,9 @@ int32_t qwProcessReady(QW_FPARAMS_DEF, SQWMsg *qwMsg) {
   }
   
   if (ctx->phase == QW_PHASE_PRE_QUERY) {
+    ctx->connInfo.handle == qwMsg->connInfo.handle;
+    ctx->connInfo.ahandle = qwMsg->connInfo.ahandle;
     QW_SET_EVENT_RECEIVED(ctx, QW_EVENT_READY);
-    ctx->readyConnection = qwMsg->connection;
     needRsp = false;
     QW_TASK_DLOG_E("ready msg will not rsp now");
     goto _return;
@@ -1007,11 +1051,11 @@ _return:
   }
 
   if (needRsp) {
-    qwBuildAndSendReadyRsp(qwMsg->connection, code);
-    QW_TASK_DLOG("ready msg rsped, code:%x - %s", code, tstrerror(code));
+    qwBuildAndSendReadyRsp(&qwMsg->connInfo, code);
+    QW_TASK_DLOG("ready msg rsped, handle:%p, code:%x - %s", qwMsg->connInfo.handle, code, tstrerror(code));
   }
 
-  QW_RET(code);
+  QW_RET(TSDB_CODE_SUCCESS);
 }
 
 
@@ -1048,10 +1092,11 @@ int32_t qwProcessCQuery(QW_FPARAMS_DEF, SQWMsg *qwMsg) {
         qwBuildFetchRsp(rsp, &sOutput, dataLen, qComplete);
         atomic_store_8((int8_t*)&ctx->queryEnd, qComplete);
 
+        qwMsg->connInfo = ctx->connInfo;
         QW_SET_EVENT_PROCESSED(ctx, QW_EVENT_FETCH);            
         
-        qwBuildAndSendFetchRsp(qwMsg->connection, rsp, dataLen, code);                
-        QW_TASK_DLOG("fetch msg rsped, code:%x, dataLen:%d", code, dataLen);
+        qwBuildAndSendFetchRsp(&qwMsg->connInfo, rsp, dataLen, code);                
+        QW_TASK_DLOG("fetch rsp send, handle:%p, code:%x - %s, dataLen:%d", qwMsg->connInfo.handle, code, tstrerror(code), dataLen);
       } else {
         atomic_store_8((int8_t*)&ctx->queryContinue, 1);
       }
@@ -1067,8 +1112,10 @@ _return:
       QW_SET_EVENT_PROCESSED(ctx, QW_EVENT_FETCH);    
       qwFreeFetchRsp(rsp);
       rsp = NULL;
-      qwBuildAndSendFetchRsp(qwMsg->connection, rsp, 0, code);
-      QW_TASK_DLOG("fetch msg rsped, code:%x - %s", code, tstrerror(code));
+      
+      qwMsg->connInfo = ctx->connInfo;
+      qwBuildAndSendFetchRsp(&qwMsg->connInfo, rsp, 0, code);
+      QW_TASK_DLOG("fetch rsp send, handle:%p, code:%x - %s, dataLen:%d", qwMsg->connInfo.handle, code, tstrerror(code), 0);
     }
 
     QW_LOCK(QW_WRITE, &ctx->lock);
@@ -1082,7 +1129,9 @@ _return:
   } while (true);
 
   input.code = code;
-  QW_RET(qwHandlePostPhaseEvents(QW_FPARAMS(), QW_PHASE_POST_CQUERY, &input, NULL));
+  qwHandlePostPhaseEvents(QW_FPARAMS(), QW_PHASE_POST_CQUERY, &input, NULL);    
+
+  QW_RET(TSDB_CODE_SUCCESS);  
 }
 
 
@@ -1097,11 +1146,14 @@ int32_t qwProcessFetch(QW_FPARAMS_DEF, SQWMsg *qwMsg) {
   QW_ERR_JRET(qwHandlePrePhaseEvents(QW_FPARAMS(), QW_PHASE_PRE_FETCH, &input, NULL));
 
   QW_ERR_JRET(qwGetTaskCtx(QW_FPARAMS(), &ctx));
- 
+  
   SOutputData sOutput = {0};
   QW_ERR_JRET(qwGetResFromSink(QW_FPARAMS(), ctx, &dataLen, &rsp, &sOutput));
 
   if (NULL == rsp) {
+    atomic_store_ptr(&ctx->connInfo.handle, qwMsg->connInfo.handle);
+    atomic_store_ptr(&ctx->connInfo.ahandle, qwMsg->connInfo.ahandle);
+    
     QW_SET_EVENT_RECEIVED(ctx, QW_EVENT_FETCH);
   } else {
     bool qComplete = (DS_BUF_EMPTY == sOutput.bufStatus && sOutput.queryEnd);
@@ -1123,7 +1175,7 @@ int32_t qwProcessFetch(QW_FPARAMS_DEF, SQWMsg *qwMsg) {
 
       atomic_store_8((int8_t*)&ctx->queryInQueue, 1);
       
-      QW_ERR_JRET(qwBuildAndSendCQueryMsg(QW_FPARAMS(), qwMsg->connection));
+      QW_ERR_JRET(qwBuildAndSendCQueryMsg(QW_FPARAMS(), &qwMsg->connInfo));
     }
   }
   
@@ -1143,17 +1195,17 @@ _return:
   }
 
   if (code || rsp) {
-    qwBuildAndSendFetchRsp(qwMsg->connection, rsp, dataLen, code);
-    QW_TASK_DLOG("fetch msg rsped, code:%x, dataLen:%d", code, dataLen);
+    qwBuildAndSendFetchRsp(&qwMsg->connInfo, rsp, dataLen, code);
+    QW_TASK_DLOG("fetch rsp send, handle:%p, code:%x - %s, dataLen:%d", qwMsg->connInfo.handle, code, tstrerror(code), dataLen);
   }
 
-  QW_RET(code);
+  QW_RET(TSDB_CODE_SUCCESS);
 }
 
 
 int32_t qwProcessDrop(QW_FPARAMS_DEF, SQWMsg *qwMsg) {
   int32_t code = 0;
-  bool needRsp = false;
+  bool rsped = false;
   SQWTaskCtx *ctx = NULL;
   bool locked = false;
 
@@ -1174,14 +1226,18 @@ int32_t qwProcessDrop(QW_FPARAMS_DEF, SQWMsg *qwMsg) {
     QW_ERR_JRET(qwKillTaskHandle(QW_FPARAMS(), ctx));
     qwUpdateTaskStatus(QW_FPARAMS(), JOB_TASK_STATUS_DROPPING);
   } else if (ctx->phase > 0) {
+    qwBuildAndSendDropRsp(&qwMsg->connInfo, code);
+    QW_TASK_DLOG("drop rsp send, handle:%p, code:%x - %s", qwMsg->connInfo.handle, code, tstrerror(code));
+  
     QW_ERR_JRET(qwDropTask(QW_FPARAMS()));
-    needRsp = true;
+    rsped = true;
   } else {
     // task not started
   }
 
-  if (!needRsp) {    
-    ctx->dropConnection = qwMsg->connection;
+  if (!rsped) {
+    ctx->connInfo.handle = qwMsg->connInfo.handle;
+    ctx->connInfo.ahandle = qwMsg->connInfo.ahandle;
     
     QW_SET_EVENT_RECEIVED(ctx, QW_EVENT_DROP);
   }
@@ -1204,13 +1260,12 @@ _return:
     qwReleaseTaskCtx(mgmt, ctx);
   }
 
-  if (TSDB_CODE_SUCCESS != code || needRsp) {
-    QW_ERR_RET(qwBuildAndSendDropRsp(qwMsg->connection, code));
-
-    QW_TASK_DLOG("drop msg rsped, code:%x", code);
+  if (TSDB_CODE_SUCCESS != code) {
+    qwBuildAndSendDropRsp(&qwMsg->connInfo, code);
+    QW_TASK_DLOG("drop rsp send, handle:%p, code:%x - %s", qwMsg->connInfo.handle, code, tstrerror(code));
   }
 
-  QW_RET(code);
+  QW_RET(TSDB_CODE_SUCCESS);
 }
 
 int32_t qwProcessHb(SQWorkerMgmt *mgmt, SQWMsg *qwMsg, SSchedulerHbReq *req) {
@@ -1218,38 +1273,46 @@ int32_t qwProcessHb(SQWorkerMgmt *mgmt, SQWMsg *qwMsg, SSchedulerHbReq *req) {
   SSchedulerHbRsp rsp = {0};
   SQWSchStatus *sch = NULL;
   uint64_t seqId = 0;
+  void *origHandle = NULL;
 
   memcpy(&rsp.epId, &req->epId, sizeof(req->epId));
   
   QW_ERR_JRET(qwAcquireAddScheduler(mgmt, req->sId, QW_READ, &sch));
 
-  atomic_store_ptr(&sch->hbConnection, qwMsg->connection);
-  ++sch->hbSeqId;
+  QW_LOCK(QW_WRITE, &sch->hbConnLock);
 
-  rsp.seqId = sch->hbSeqId;
-
-  QW_DLOG("hb connection updated, seqId:%" PRIx64 ", sId:%" PRIx64 ", nodeId:%d, fqdn:%s, port:%d, connection:%p",
-    sch->hbSeqId, req->sId, req->epId.nodeId, req->epId.ep.fqdn, req->epId.ep.port, qwMsg->connection);
+  if (sch->hbConnInfo.handle) {
+    rpcReleaseHandle(sch->hbConnInfo.handle, TAOS_CONN_SERVER);
+  }
+  
+  memcpy(&sch->hbConnInfo, &qwMsg->connInfo, sizeof(qwMsg->connInfo));
+  memcpy(&sch->hbEpId, &req->epId, sizeof(req->epId));
+  
+  QW_UNLOCK(QW_WRITE, &sch->hbConnLock);
+  
+  QW_DLOG("hb connection updated, sId:%" PRIx64 ", nodeId:%d, fqdn:%s, port:%d, handle:%p, ahandle:%p",
+    req->sId, req->epId.nodeId, req->epId.ep.fqdn, req->epId.ep.port, qwMsg->connInfo.handle, qwMsg->connInfo.ahandle);
 
   qwReleaseScheduler(QW_READ, mgmt);
 
 _return:
 
-  qwBuildAndSendHbRsp(qwMsg->connection, &rsp, code);
+  qwBuildAndSendHbRsp(&qwMsg->connInfo, &rsp, code);
+  QW_DLOG("hb rsp send, handle:%p, code:%x - %s", qwMsg->connInfo.handle, code, tstrerror(code));
   
-  QW_RET(code);
+  QW_RET(TSDB_CODE_SUCCESS);
 }
 
 
 void qwProcessHbTimerEvent(void *param, void *tmrId) {
-  return;
-  
   SQWorkerMgmt *mgmt = (SQWorkerMgmt *)param;
   SQWSchStatus *sch = NULL;
   int32_t taskNum = 0;
   SQWHbInfo *rspList = NULL;
   int32_t code = 0;
 
+  qwDbgDumpMgmtInfo(mgmt);
+
   QW_LOCK(QW_READ, &mgmt->schLock);
 
   int32_t schNum = taosHashGetSize(mgmt->schHash);
@@ -1288,8 +1351,8 @@ _return:
   QW_UNLOCK(QW_READ, &mgmt->schLock);
 
   for (int32_t j = 0; j < i; ++j) {
-    QW_DLOG("hb on connection %p, taskNum:%d", rspList[j].connection, (rspList[j].rsp.taskStatus ? (int32_t)taosArrayGetSize(rspList[j].rsp.taskStatus) : 0));
-    qwBuildAndSendHbRsp(rspList[j].connection, &rspList[j].rsp, code);
+    qwBuildAndSendHbRsp(&rspList[j].connInfo, &rspList[j].rsp, code);
+    QW_DLOG("hb rsp send, handle:%p, code:%x - %s, taskNum:%d", rspList[j].connInfo.handle, code, tstrerror(code), (rspList[j].rsp.taskStatus ? (int32_t)taosArrayGetSize(rspList[j].rsp.taskStatus) : 0));    
     tFreeSSchedulerHbRsp(&rspList[j].rsp);
   }
 

source/libs/qworker/src/qworkerMsg.c

@@ -26,6 +26,8 @@ int32_t qwMallocFetchRsp(int32_t length, SRetrieveTableRsp **rsp) {
   return TSDB_CODE_SUCCESS;
 }
 
+
+
 void qwBuildFetchRsp(void *msg, SOutputData *input, int32_t len, bool qComplete) {
   SRetrieveTableRsp *rsp = (SRetrieveTableRsp *)msg;
   
@@ -44,8 +46,7 @@ void qwFreeFetchRsp(void *msg) {
   }
 }
 
-int32_t qwBuildAndSendQueryRsp(void *connection, int32_t code) {
-  SRpcMsg *pMsg = (SRpcMsg *)connection;
+int32_t qwBuildAndSendQueryRsp(SQWConnInfo *pConn, int32_t code) {
   SQueryTableRsp rsp = {.code = code};
   
   int32_t contLen = tSerializeSQueryTableRsp(NULL, 0, &rsp);
@@ -54,8 +55,8 @@ int32_t qwBuildAndSendQueryRsp(void *connection, int32_t code) {
 
   SRpcMsg rpcRsp = {
     .msgType = TDMT_VND_QUERY_RSP,
-    .handle  = pMsg->handle,
-    .ahandle = pMsg->ahandle,
+    .handle  = pConn->handle,
+    .ahandle = pConn->ahandle,
     .pCont   = msg,
     .contLen = contLen,
     .code    = code,
@@ -66,15 +67,14 @@ int32_t qwBuildAndSendQueryRsp(void *connection, int32_t code) {
   return TSDB_CODE_SUCCESS;
 }
 
-int32_t qwBuildAndSendReadyRsp(void *connection, int32_t code) {
-  SRpcMsg *pMsg = (SRpcMsg *)connection;
+int32_t qwBuildAndSendReadyRsp(SQWConnInfo *pConn, int32_t code) {
   SResReadyRsp *pRsp = (SResReadyRsp *)rpcMallocCont(sizeof(SResReadyRsp));
   pRsp->code = code;
 
   SRpcMsg rpcRsp = {
     .msgType = TDMT_VND_RES_READY_RSP,
-    .handle  = pMsg->handle,
-    .ahandle = pMsg->ahandle,
+    .handle  = pConn->handle,
+    .ahandle = NULL,
     .pCont   = pRsp,
     .contLen = sizeof(*pRsp),
     .code    = code,
@@ -85,15 +85,15 @@ int32_t qwBuildAndSendReadyRsp(void *connection, int32_t code) {
   return TSDB_CODE_SUCCESS;
 }
 
-int32_t qwBuildAndSendHbRsp(SRpcMsg *pMsg, SSchedulerHbRsp *pStatus, int32_t code) {
+int32_t qwBuildAndSendHbRsp(SQWConnInfo *pConn, SSchedulerHbRsp *pStatus, int32_t code) {
   int32_t contLen = tSerializeSSchedulerHbRsp(NULL, 0, pStatus);
   void *pRsp = rpcMallocCont(contLen);
   tSerializeSSchedulerHbRsp(pRsp, contLen, pStatus);
 
   SRpcMsg rpcRsp = {
     .msgType = TDMT_VND_QUERY_HEARTBEAT_RSP,
-    .handle  = pMsg->handle,
-    .ahandle = pMsg->ahandle,
+    .handle  = pConn->handle,
+    .ahandle = pConn->ahandle,
     .pCont   = pRsp,
     .contLen = contLen,
     .code    = code,
@@ -104,9 +104,7 @@ int32_t qwBuildAndSendHbRsp(SRpcMsg *pMsg, SSchedulerHbRsp *pStatus, int32_t cod
   return TSDB_CODE_SUCCESS;
 }
 
-int32_t qwBuildAndSendFetchRsp(void *connection, SRetrieveTableRsp *pRsp, int32_t dataLength, int32_t code) {
-  SRpcMsg *pMsg = (SRpcMsg *)connection;
-  
+int32_t qwBuildAndSendFetchRsp(SQWConnInfo *pConn, SRetrieveTableRsp *pRsp, int32_t dataLength, int32_t code) {
   if (NULL == pRsp) {
     pRsp = (SRetrieveTableRsp *)rpcMallocCont(sizeof(SRetrieveTableRsp));
     memset(pRsp, 0, sizeof(SRetrieveTableRsp));
@@ -115,8 +113,8 @@ int32_t qwBuildAndSendFetchRsp(void *connection, SRetrieveTableRsp *pRsp, int32_
 
   SRpcMsg rpcRsp = {
     .msgType = TDMT_VND_FETCH_RSP,
-    .handle  = pMsg->handle,
-    .ahandle = pMsg->ahandle,
+    .handle  = pConn->handle,
+    .ahandle = pConn->ahandle,
     .pCont   = pRsp,
     .contLen = sizeof(*pRsp) + dataLength,
     .code    = code,
@@ -127,14 +125,14 @@ int32_t qwBuildAndSendFetchRsp(void *connection, SRetrieveTableRsp *pRsp, int32_
   return TSDB_CODE_SUCCESS;
 }
 
-int32_t qwBuildAndSendCancelRsp(SRpcMsg *pMsg, int32_t code) {
+int32_t qwBuildAndSendCancelRsp(SQWConnInfo *pConn, int32_t code) {
   STaskCancelRsp *pRsp = (STaskCancelRsp *)rpcMallocCont(sizeof(STaskCancelRsp));
   pRsp->code = code;
 
   SRpcMsg rpcRsp = {
     .msgType = TDMT_VND_CANCEL_TASK_RSP,
-    .handle  = pMsg->handle,
-    .ahandle = pMsg->ahandle,
+    .handle  = pConn->handle,
+    .ahandle = pConn->ahandle,
     .pCont   = pRsp,
     .contLen = sizeof(*pRsp),
     .code    = code,
@@ -144,15 +142,14 @@ int32_t qwBuildAndSendCancelRsp(SRpcMsg *pMsg, int32_t code) {
   return TSDB_CODE_SUCCESS;
 }
 
-int32_t qwBuildAndSendDropRsp(void *connection, int32_t code) {
-  SRpcMsg *pMsg = (SRpcMsg *)connection;
+int32_t qwBuildAndSendDropRsp(SQWConnInfo *pConn, int32_t code) {
   STaskDropRsp *pRsp = (STaskDropRsp *)rpcMallocCont(sizeof(STaskDropRsp));
   pRsp->code = code;
 
   SRpcMsg rpcRsp = {
     .msgType = TDMT_VND_DROP_TASK_RSP,
-    .handle  = pMsg->handle,
-    .ahandle = pMsg->ahandle,
+    .handle  = pConn->handle,
+    .ahandle = pConn->ahandle,
     .pCont   = pRsp,
     .contLen = sizeof(*pRsp),
     .code    = code,
@@ -234,8 +231,7 @@ int32_t qwBuildAndSendShowFetchRsp(SRpcMsg *pMsg, SVShowTablesFetchReq* pFetchRe
   return TSDB_CODE_SUCCESS;
 }
 
-int32_t qwBuildAndSendCQueryMsg(QW_FPARAMS_DEF, void *connection) {
-  SRpcMsg *pMsg = (SRpcMsg *)connection;
+int32_t qwBuildAndSendCQueryMsg(QW_FPARAMS_DEF, SQWConnInfo *pConn) {
   SQueryContinueReq * req = (SQueryContinueReq *)rpcMallocCont(sizeof(SQueryContinueReq));
   if (NULL == req) {
     QW_SCH_TASK_ELOG("rpcMallocCont %d failed", (int32_t)sizeof(SQueryContinueReq));
@@ -248,12 +244,12 @@ int32_t qwBuildAndSendCQueryMsg(QW_FPARAMS_DEF, void *connection) {
   req->taskId = tId;
 
   SRpcMsg pNewMsg = {
-      .handle = pMsg->handle,
-      .ahandle = pMsg->ahandle,
-      .msgType = TDMT_VND_QUERY_CONTINUE,
-      .pCont = req,
-      .contLen = sizeof(SQueryContinueReq),
-      .code = 0,
+    .handle  = pConn->handle,
+    .ahandle = pConn->ahandle,
+    .msgType = TDMT_VND_QUERY_CONTINUE,
+    .pCont   = req,
+    .contLen = sizeof(SQueryContinueReq),
+    .code    = 0,
   };
 
   int32_t code = tmsgPutToQueue(&mgmt->msgCb, QUERY_QUEUE, &pNewMsg);
@@ -268,6 +264,35 @@ int32_t qwBuildAndSendCQueryMsg(QW_FPARAMS_DEF, void *connection) {
   return TSDB_CODE_SUCCESS;
 }
 
+
+int32_t qwRegisterBrokenLinkArg(QW_FPARAMS_DEF, SQWConnInfo *pConn) {
+  STaskDropReq * req = (STaskDropReq *)rpcMallocCont(sizeof(STaskDropReq));
+  if (NULL == req) {
+    QW_SCH_TASK_ELOG("rpcMallocCont %d failed", (int32_t)sizeof(STaskDropReq));
+    QW_ERR_RET(TSDB_CODE_QRY_OUT_OF_MEMORY);
+  }  
+
+  req->header.vgId = htonl(mgmt->nodeId);
+  req->sId = htobe64(sId);
+  req->queryId = htobe64(qId);
+  req->taskId = htobe64(tId);
+  req->refId = htobe64(rId);
+  
+  SRpcMsg pMsg = {
+    .handle  = pConn->handle,
+    .ahandle = pConn->ahandle,
+    .msgType = TDMT_VND_DROP_TASK,
+    .pCont   = req,
+    .contLen = sizeof(STaskDropReq),
+    .code    = TSDB_CODE_RPC_NETWORK_UNAVAIL,
+  };
+  
+  rpcRegisterBrokenLinkArg(&pMsg);
+
+  return TSDB_CODE_SUCCESS;
+}
+
+
 int32_t qWorkerProcessQueryMsg(void *node, void *qWorkerMgmt, SRpcMsg *pMsg) {
   if (NULL == node || NULL == qWorkerMgmt || NULL == pMsg) {
     QW_ERR_RET(TSDB_CODE_QRY_INVALID_INPUT);
@@ -294,10 +319,12 @@ int32_t qWorkerProcessQueryMsg(void *node, void *qWorkerMgmt, SRpcMsg *pMsg) {
   uint64_t tId = msg->taskId;
   int64_t  rId = msg->refId;
 
-  SQWMsg qwMsg = {.node = node, .msg = msg->msg + msg->sqlLen, .msgLen = msg->phyLen, .connection = pMsg};
+  SQWMsg qwMsg = {.node = node, .msg = msg->msg + msg->sqlLen, .msgLen = msg->phyLen};
+  qwMsg.connInfo.handle = pMsg->handle;
+  qwMsg.connInfo.ahandle = pMsg->ahandle;
 
   char* sql = strndup(msg->msg, msg->sqlLen);
-  QW_SCH_TASK_DLOG("processQuery start, node:%p, sql:%s", node, sql);
+  QW_SCH_TASK_DLOG("processQuery start, node:%p, handle:%p, sql:%s", node, pMsg->handle, sql);
   taosMemoryFreeClear(sql);
 
   QW_ERR_RET(qwProcessQuery(QW_FPARAMS(), &qwMsg, msg->taskType));
@@ -326,9 +353,11 @@ int32_t qWorkerProcessCQueryMsg(void *node, void *qWorkerMgmt, SRpcMsg *pMsg) {
   uint64_t tId = msg->taskId;
   int64_t rId = 0;
 
-  SQWMsg qwMsg = {.node = node, .msg = NULL, .msgLen = 0, .connection = pMsg};
+  SQWMsg qwMsg = {.node = node, .msg = NULL, .msgLen = 0};
+  qwMsg.connInfo.handle = pMsg->handle;
+  qwMsg.connInfo.ahandle = pMsg->ahandle;
 
-  QW_SCH_TASK_DLOG("processCQuery start, node:%p", node);
+  QW_SCH_TASK_DLOG("processCQuery start, node:%p, handle:%p", node, pMsg->handle);
 
   QW_ERR_RET(qwProcessCQuery(QW_FPARAMS(), &qwMsg));
 
@@ -358,9 +387,11 @@ int32_t qWorkerProcessReadyMsg(void *node, void *qWorkerMgmt, SRpcMsg *pMsg){
   uint64_t tId = msg->taskId;
   int64_t rId = 0;
 
-  SQWMsg qwMsg = {.node = node, .msg = NULL, .msgLen = 0, .connection = pMsg};
+  SQWMsg qwMsg = {.node = node, .msg = NULL, .msgLen = 0};
+  qwMsg.connInfo.handle = pMsg->handle;
+  qwMsg.connInfo.ahandle = pMsg->ahandle;
 
-  QW_SCH_TASK_DLOG("processReady start, node:%p", node);
+  QW_SCH_TASK_DLOG("processReady start, node:%p, handle:%p", node, pMsg->handle);
 
   QW_ERR_RET(qwProcessReady(QW_FPARAMS(), &qwMsg));
 
@@ -418,9 +449,11 @@ int32_t qWorkerProcessFetchMsg(void *node, void *qWorkerMgmt, SRpcMsg *pMsg) {
   uint64_t tId = msg->taskId;
   int64_t rId = 0;
 
-  SQWMsg qwMsg = {.node = node, .msg = NULL, .msgLen = 0, .connection = pMsg};
+  SQWMsg qwMsg = {.node = node, .msg = NULL, .msgLen = 0};
+  qwMsg.connInfo.handle = pMsg->handle;
+  qwMsg.connInfo.ahandle = pMsg->ahandle;
 
-  QW_SCH_TASK_DLOG("processFetch start, node:%p", node);
+  QW_SCH_TASK_DLOG("processFetch start, node:%p, handle:%p", node, pMsg->handle);
 
   QW_ERR_RET(qwProcessFetch(QW_FPARAMS(), &qwMsg));
 
@@ -439,6 +472,7 @@ int32_t qWorkerProcessCancelMsg(void *node, void *qWorkerMgmt, SRpcMsg *pMsg) {
     return TSDB_CODE_QRY_INVALID_INPUT;
   }
 
+  SQWorkerMgmt *mgmt = (SQWorkerMgmt *)qWorkerMgmt;
   int32_t code = 0;
   STaskCancelReq *msg = pMsg->pCont;
   if (NULL == msg || pMsg->contLen < sizeof(*msg)) {
@@ -451,11 +485,21 @@ int32_t qWorkerProcessCancelMsg(void *node, void *qWorkerMgmt, SRpcMsg *pMsg) {
   msg->taskId = be64toh(msg->taskId);
   msg->refId = be64toh(msg->refId);
 
+  uint64_t sId = msg->sId;
+  uint64_t qId = msg->queryId;
+  uint64_t tId = msg->taskId;
+  int64_t  rId = msg->refId;
+
+  SQWMsg qwMsg = {.node = node, .msg = NULL, .msgLen = 0};
+  qwMsg.connInfo.handle = pMsg->handle;
+  qwMsg.connInfo.ahandle = pMsg->ahandle;
+
   //QW_ERR_JRET(qwCancelTask(qWorkerMgmt, msg->sId, msg->queryId, msg->taskId));
 
 _return:
 
-  QW_ERR_RET(qwBuildAndSendCancelRsp(pMsg, code));
+  QW_ERR_RET(qwBuildAndSendCancelRsp(&qwMsg.connInfo, code));
+  QW_SCH_TASK_DLOG("cancel rsp send, handle:%p, code:%x - %s", qwMsg.connInfo.handle, code, tstrerror(code));
 
   return TSDB_CODE_SUCCESS;
 }
@@ -484,9 +528,15 @@ int32_t qWorkerProcessDropMsg(void *node, void *qWorkerMgmt, SRpcMsg *pMsg) {
   uint64_t tId = msg->taskId;
   int64_t  rId = msg->refId;
 
-  SQWMsg qwMsg = {.node = node, .msg = NULL, .msgLen = 0, .connection = pMsg};
+  SQWMsg qwMsg = {.node = node, .msg = NULL, .msgLen = 0};
+  qwMsg.connInfo.handle = pMsg->handle;
+  qwMsg.connInfo.ahandle = pMsg->ahandle;
+
+  if (TSDB_CODE_RPC_NETWORK_UNAVAIL == pMsg->code) {
+    QW_SCH_TASK_DLOG("receive drop task due to network broken, error:%s", tstrerror(pMsg->code));    
+  }
 
-  QW_SCH_TASK_DLOG("processDrop start, node:%p", node);
+  QW_SCH_TASK_DLOG("processDrop start, node:%p, handle:%p", node, pMsg->handle);
 
   QW_ERR_RET(qwProcessDrop(QW_FPARAMS(), &qwMsg));
 
@@ -516,9 +566,11 @@ int32_t qWorkerProcessHbMsg(void *node, void *qWorkerMgmt, SRpcMsg *pMsg) {
   }
 
   uint64_t sId = req.sId;
-  SQWMsg qwMsg = {.node = node, .msg = NULL, .msgLen = 0, .connection = pMsg};
+  SQWMsg qwMsg = {.node = node, .msg = NULL, .msgLen = 0};
+  qwMsg.connInfo.handle = pMsg->handle;
+  qwMsg.connInfo.ahandle = pMsg->ahandle;
 
-  QW_SCH_DLOG("processHb start, node:%p", node);
+  QW_SCH_DLOG("processHb start, node:%p, handle:%p", node, pMsg->handle);
 
   QW_ERR_RET(qwProcessHb(mgmt, &qwMsg, &req));
 
@@ -535,7 +587,7 @@ int32_t qWorkerProcessShowMsg(void *node, void *qWorkerMgmt, SRpcMsg *pMsg) {
 
   int32_t code = 0;
   SVShowTablesReq *pReq = pMsg->pCont;
-  QW_ERR_RET(qwBuildAndSendShowRsp(pMsg, code));
+  QW_RET(qwBuildAndSendShowRsp(pMsg, code));
 }
 
 int32_t qWorkerProcessShowFetchMsg(void *node, void *qWorkerMgmt, SRpcMsg *pMsg) {
@@ -544,7 +596,7 @@ int32_t qWorkerProcessShowFetchMsg(void *node, void *qWorkerMgmt, SRpcMsg *pMsg)
   }
 
   SVShowTablesFetchReq *pFetchReq = pMsg->pCont;
-  QW_ERR_RET(qwBuildAndSendShowFetchRsp(pMsg, pFetchReq));
+  QW_RET(qwBuildAndSendShowFetchRsp(pMsg, pFetchReq));
 }
 
 

source/libs/qworker/test/qworkerTests.cpp

@@ -887,8 +887,8 @@ TEST(seqTest, normalCase) {
   code = qWorkerProcessQueryMsg(mockPointer, mgmt, &queryRpc);
   ASSERT_EQ(code, 0);
 
-  code = qWorkerProcessReadyMsg(mockPointer, mgmt, &readyRpc);
-  ASSERT_EQ(code, 0);
+  //code = qWorkerProcessReadyMsg(mockPointer, mgmt, &readyRpc);
+  //ASSERT_EQ(code, 0);
 
   code = qWorkerProcessFetchMsg(mockPointer, mgmt, &fetchRpc);
   ASSERT_EQ(code, 0);
@@ -985,12 +985,12 @@ TEST(seqTest, randCase) {
       qwtBuildQueryReqMsg(&queryRpc);
       code = qWorkerProcessQueryMsg(mockPointer, mgmt, &queryRpc);
     } else if (r >= maxr/5 && r < maxr * 2/5) {
-      printf("Ready,%d\n", t++);
-      qwtBuildReadyReqMsg(&readyMsg, &readyRpc);
-      code = qWorkerProcessReadyMsg(mockPointer, mgmt, &readyRpc);
-      if (qwtTestEnableSleep) {
-        taosUsleep(1);
-      }
+      //printf("Ready,%d\n", t++);
+      //qwtBuildReadyReqMsg(&readyMsg, &readyRpc);
+      //code = qWorkerProcessReadyMsg(mockPointer, mgmt, &readyRpc);
+      //if (qwtTestEnableSleep) {
+      //  taosUsleep(1);
+      //}
     } else if (r >= maxr * 2/5 && r < maxr* 3/5) {
       printf("Fetch,%d\n", t++);
       qwtBuildFetchReqMsg(&fetchMsg, &fetchRpc);
@@ -1054,7 +1054,7 @@ TEST(seqTest, multithreadRand) {
 
   TdThread t1,t2,t3,t4,t5,t6;
   taosThreadCreate(&(t1), &thattr, queryThread, mgmt);
-  taosThreadCreate(&(t2), &thattr, readyThread, NULL);
+  //taosThreadCreate(&(t2), &thattr, readyThread, NULL);
   taosThreadCreate(&(t3), &thattr, fetchThread, NULL);
   taosThreadCreate(&(t4), &thattr, dropThread, NULL);
   taosThreadCreate(&(t5), &thattr, statusThread, NULL);

source/libs/scalar/inc/sclfunc.h

@@ -37,7 +37,6 @@ int32_t evaluateExprNodeTree(tExprNode* pExprs, int32_t numOfRows, SScalarParam*
                           void* param, char* (*getSourceDataBlock)(void*, const char*, int32_t));
 
 
-
 #ifdef __cplusplus
 }
 #endif

source/libs/transport/inc/transComm.h

@@ -158,7 +158,8 @@ typedef struct {
   char secured : 2;
   char spi : 2;
 
-  uint32_t code;  // del later
+  uint64_t ahandle;  // ahandle assigned by client
+  uint32_t code;     // del later
   uint32_t msgType;
   int32_t  msgLen;
   uint8_t  content[0];  // message body starts from here
@@ -182,7 +183,7 @@ typedef struct {
 #pragma pack(pop)
 
 typedef enum { Normal, Quit, Release, Register } STransMsgType;
-typedef enum { ConnNormal, ConnAcquire, ConnRelease, ConnBroken } ConnStatus;
+typedef enum { ConnNormal, ConnAcquire, ConnRelease, ConnBroken, ConnInPool } ConnStatus;
 
 #define container_of(ptr, type, member) ((type*)((char*)(ptr)-offsetof(type, member)))
 #define RPC_RESERVE_SIZE (sizeof(STranConnCtx))
@@ -277,6 +278,7 @@ void  transCtxCleanup(STransCtx* ctx);
 void  transCtxClear(STransCtx* ctx);
 void  transCtxMerge(STransCtx* dst, STransCtx* src);
 void* transCtxDumpVal(STransCtx* ctx, int32_t key);
+void* transCtxDumpBrokenlinkVal(STransCtx* ctx, int32_t* msgType);
 
 // queue sending msgs
 typedef struct {
@@ -295,20 +297,25 @@ void transQueueInit(STransQueue* queue, void (*freeFunc)(const void* arg));
  * if queue'size > 1, return false; else return true
  */
 bool transQueuePush(STransQueue* queue, void* arg);
+/*
+ * the size of queue
+ */
+int32_t transQueueSize(STransQueue* queue);
 /*
  * pop head from queue
  */
-
 void* transQueuePop(STransQueue* queue);
 /*
- * get head from queue
+ * get ith from queue
  */
-void* transQueueGet(STransQueue* queue);
-
+void* transQueueGet(STransQueue* queue, int i);
+/*
+ * rm ith from queue
+ */
+void* transQueueRm(STransQueue* queue, int i);
 /*
  * queue empty or not
  */
-
 bool transQueueEmpty(STransQueue* queue);
 /*
  * clear queue