Merge pull request #15771 from taosdata/enh/ctgPerf

enh: improve catalog performance

include/common/tmsg.h

@@ -3055,6 +3055,7 @@ int32_t tEncodeDeleteRes(SEncoder* pCoder, const SDeleteRes* pRes);
 int32_t tDecodeDeleteRes(SDecoder* pCoder, SDeleteRes* pRes);
 
 typedef struct {
+  int32_t msgIdx;
   int32_t msgType;
   int32_t msgLen;
   void*   msg;
@@ -3068,6 +3069,7 @@ typedef struct {
 
 typedef struct {
   int32_t reqType;
+  int32_t msgIdx;
   int32_t msgLen;
   int32_t rspCode;
   void*   msg;

include/libs/catalog/catalog.h

@@ -58,12 +58,17 @@ typedef struct SDbInfo {
   int64_t dbId;
 } SDbInfo;
 
+typedef struct STablesReq {
+  char    dbFName[TSDB_DB_FNAME_LEN];
+  SArray* pTables;
+} STablesReq;
+
 typedef struct SCatalogReq {
   SArray* pDbVgroup;      // element is db full name
   SArray* pDbCfg;         // element is db full name
   SArray* pDbInfo;        // element is db full name
-  SArray* pTableMeta;     // element is SNAME
-  SArray* pTableHash;     // element is SNAME
+  SArray* pTableMeta;     // element is STablesReq
+  SArray* pTableHash;     // element is STablesReq
   SArray* pUdf;           // element is udf name
   SArray* pIndex;         // element is index name
   SArray* pUser;          // element is SUserAuthInfo

source/client/src/clientImpl.c

@@ -1922,7 +1922,7 @@ _OVER:
   return code;
 }
 
-int32_t appendTbToReq(SArray* pList, int32_t pos1, int32_t len1, int32_t pos2, int32_t len2, const char* str,
+int32_t appendTbToReq(SHashObj* pHash, int32_t pos1, int32_t len1, int32_t pos2, int32_t len2, const char* str,
                       int32_t acctId, char* db) {
   SName name;
 
@@ -1957,20 +1957,33 @@ int32_t appendTbToReq(SArray* pList, int32_t pos1, int32_t len1, int32_t pos2, i
     return -1;
   }
 
-  taosArrayPush(pList, &name);
+  char dbFName[TSDB_DB_FNAME_LEN];
+  sprintf(dbFName, "%d.%.*s", acctId, dbLen, dbName);
+
+  STablesReq* pDb = taosHashGet(pHash, dbFName, strlen(dbFName));
+  if (pDb) {
+    taosArrayPush(pDb->pTables, &name);
+  } else {
+    STablesReq db;
+    db.pTables = taosArrayInit(20, sizeof(SName));
+    strcpy(db.dbFName, dbFName);
+    taosArrayPush(db.pTables, &name);
+    taosHashPut(pHash, dbFName, strlen(dbFName), &db, sizeof(db));
+  }
 
   return TSDB_CODE_SUCCESS;
 }
 
 int32_t transferTableNameList(const char* tbList, int32_t acctId, char* dbName, SArray** pReq) {
-  *pReq = taosArrayInit(10, sizeof(SName));
-  if (NULL == *pReq) {
+  SHashObj* pHash = taosHashInit(3, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), false, HASH_NO_LOCK);
+  if (NULL == pHash) {
     terrno = TSDB_CODE_OUT_OF_MEMORY;
     return terrno;
   }
 
   bool    inEscape = false;
   int32_t code = 0;
+  void *pIter = NULL;
 
   int32_t vIdx = 0;
   int32_t vPos[2];
@@ -1985,7 +1998,7 @@ int32_t transferTableNameList(const char* tbList, int32_t acctId, char* dbName,
         vLen[vIdx] = i - vPos[vIdx];
       }
 
-      code = appendTbToReq(*pReq, vPos[0], vLen[0], vPos[1], vLen[1], tbList, acctId, dbName);
+      code = appendTbToReq(pHash, vPos[0], vLen[0], vPos[1], vLen[1], tbList, acctId, dbName);
       if (code) {
         goto _return;
       }
@@ -2035,7 +2048,7 @@ int32_t transferTableNameList(const char* tbList, int32_t acctId, char* dbName,
         vLen[vIdx] = i - vPos[vIdx];
       }
 
-      code = appendTbToReq(*pReq, vPos[0], vLen[0], vPos[1], vLen[1], tbList, acctId, dbName);
+      code = appendTbToReq(pHash, vPos[0], vLen[0], vPos[1], vLen[1], tbList, acctId, dbName);
       if (code) {
         goto _return;
       }
@@ -2067,14 +2080,31 @@ int32_t transferTableNameList(const char* tbList, int32_t acctId, char* dbName,
     goto _return;
   }
 
+  int32_t dbNum = taosHashGetSize(pHash);
+  *pReq = taosArrayInit(dbNum, sizeof(STablesReq));
+  pIter = taosHashIterate(pHash, NULL);
+  while (pIter) {
+    STablesReq* pDb = (STablesReq*)pIter;
+    taosArrayPush(*pReq, pDb);
+    pIter = taosHashIterate(pHash, pIter);
+  }
+
+  taosHashCleanup(pHash);
+
   return TSDB_CODE_SUCCESS;
 
 _return:
 
   terrno = TSDB_CODE_TSC_INVALID_OPERATION;
 
-  taosArrayDestroy(*pReq);
-  *pReq = NULL;
+  pIter = taosHashIterate(pHash, NULL);
+  while (pIter) {
+    STablesReq* pDb = (STablesReq*)pIter;
+    taosArrayDestroy(pDb->pTables);
+    pIter = taosHashIterate(pHash, pIter);
+  }
+
+  taosHashCleanup(pHash);
 
   return terrno;
 }

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

@@ -84,6 +84,9 @@ int32_t mndProcessBatchMetaMsg(SRpcMsg *pMsg) {
   }
   
   for (int32_t i = 0; i < msgNum; ++i) {
+    req.msgIdx = ntohl(*(int32_t*)((char*)pMsg->pCont + offset));
+    offset += sizeof(req.msgIdx);
+
     req.msgType = ntohl(*(int32_t*)((char*)pMsg->pCont + offset));
     offset += sizeof(req.msgType);
 
@@ -111,6 +114,7 @@ int32_t mndProcessBatchMetaMsg(SRpcMsg *pMsg) {
     } else {
       rsp.rspCode = 0;
     }
+    rsp.msgIdx = req.msgIdx;
     rsp.reqType = reqMsg.msgType;
     rsp.msgLen = reqMsg.info.rspLen;
     rsp.msg = reqMsg.info.rsp;
@@ -136,6 +140,8 @@ int32_t mndProcessBatchMetaMsg(SRpcMsg *pMsg) {
     
     *(int32_t*)((char*)pRsp + offset) = htonl(p->reqType);
     offset += sizeof(p->reqType);
+    *(int32_t*)((char*)pRsp + offset) = htonl(p->msgIdx);
+    offset += sizeof(p->msgIdx);
     *(int32_t*)((char*)pRsp + offset) = htonl(p->msgLen);
     offset += sizeof(p->msgLen);
     *(int32_t*)((char*)pRsp + offset) = htonl(p->rspCode);

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

@@ -273,6 +273,9 @@ int32_t vnodeGetBatchMeta(SVnode *pVnode, SRpcMsg *pMsg) {
   }
 
   for (int32_t i = 0; i < msgNum; ++i) {
+    req.msgIdx = ntohl(*(int32_t *)((char *)pMsg->pCont + offset));
+    offset += sizeof(req.msgIdx);
+
     req.msgType = ntohl(*(int32_t *)((char *)pMsg->pCont + offset));
     offset += sizeof(req.msgType);
 
@@ -301,6 +304,7 @@ int32_t vnodeGetBatchMeta(SVnode *pVnode, SRpcMsg *pMsg) {
         break;
     }
 
+    rsp.msgIdx = req.msgIdx;
     rsp.reqType = reqMsg.msgType;
     rsp.msgLen = reqMsg.contLen;
     rsp.rspCode = reqMsg.code;
@@ -327,6 +331,8 @@ int32_t vnodeGetBatchMeta(SVnode *pVnode, SRpcMsg *pMsg) {
 
     *(int32_t *)((char *)pRsp + offset) = htonl(p->reqType);
     offset += sizeof(p->reqType);
+    *(int32_t *)((char *)pRsp + offset) = htonl(p->msgIdx);
+    offset += sizeof(p->msgIdx);
     *(int32_t *)((char *)pRsp + offset) = htonl(p->msgLen);
     offset += sizeof(p->msgLen);
     *(int32_t *)((char *)pRsp + offset) = htonl(p->rspCode);

source/libs/catalog/inc/catalogInt.h

@@ -32,6 +32,7 @@ extern "C" {
 #define CTG_DEFAULT_RENT_SLOT_SIZE 10
 #define CTG_DEFAULT_MAX_RETRY_TIMES 3
 #define CTG_DEFAULT_BATCH_NUM 64
+#define CTG_DEFAULT_FETCH_NUM 8
 
 #define CTG_RENT_SLOT_SECOND 1.5
 
@@ -80,6 +81,8 @@ typedef enum {
   CTG_TASK_GET_UDF,
   CTG_TASK_GET_USER,
   CTG_TASK_GET_SVR_VER,
+  CTG_TASK_GET_TB_META_BATCH,
+  CTG_TASK_GET_TB_HASH_BATCH,
 } CTG_TASK_TYPE;
 
 typedef enum {
@@ -110,6 +113,23 @@ typedef struct SCtgTbMetaCtx {
   int32_t flag;
 } SCtgTbMetaCtx;
 
+typedef struct SCtgFetch {
+  int32_t dbIdx;
+  int32_t tbIdx;
+  int32_t fetchIdx;
+  int32_t resIdx;
+  int32_t flag;
+  SCtgTbCacheInfo tbInfo;
+  int32_t vgId;
+} SCtgFetch;
+
+typedef struct SCtgTbMetasCtx {
+  int32_t fetchNum;
+  SArray* pNames;
+  SArray* pResList;
+  SArray* pFetchs;
+} SCtgTbMetasCtx;
+
 typedef struct SCtgTbIndexCtx {
   SName* pName;
 } SCtgTbIndexCtx;
@@ -137,6 +157,14 @@ typedef struct SCtgTbHashCtx {
   SName* pName;
 } SCtgTbHashCtx;
 
+typedef struct SCtgTbHashsCtx {
+  int32_t fetchNum;
+  SArray* pNames;
+  SArray* pResList;
+  SArray* pFetchs;
+} SCtgTbHashsCtx;
+
+
 typedef struct SCtgIndexCtx {
   char indexFName[TSDB_INDEX_FNAME_LEN];
 } SCtgIndexCtx;
@@ -211,6 +239,7 @@ typedef struct SCtgBatch {
   SRequestConnInfo conn;
   char    dbFName[TSDB_DB_FNAME_LEN];
   SArray* pTaskIds;
+  SArray* pMsgIdxs;
 } SCtgBatch;
 
 typedef struct SCtgJob {
@@ -218,6 +247,7 @@ typedef struct SCtgJob {
   int32_t           batchId;
   SHashObj*         pBatchs;
   SArray*           pTasks;
+  int32_t           subTaskNum;
   int32_t           taskDone;
   SMetaData         jobRes;
   int32_t           jobResCode;
@@ -258,6 +288,7 @@ typedef struct SCtgTaskCallbackParam {
   SArray*                 taskId;
   int32_t                 reqType;
   int32_t                 batchId;
+  SArray*                 msgIdx;
 } SCtgTaskCallbackParam;
 
 
@@ -276,6 +307,7 @@ typedef struct SCtgTask {
   int32_t         taskId;
   SCtgJob*        pJob;
   void*           taskCtx;
+  SArray*         msgCtxs;
   SCtgMsgCtx      msgCtx;
   int32_t         code;
   void*           res;
@@ -286,9 +318,14 @@ typedef struct SCtgTask {
   SHashObj*       pBatchs;
 } SCtgTask;
 
+typedef struct SCtgTaskReq {
+  SCtgTask* pTask;
+  int32_t   msgIdx;
+} SCtgTaskReq;
+
 typedef int32_t (*ctgInitTaskFp)(SCtgJob*, int32_t, void*);
 typedef int32_t (*ctgLanchTaskFp)(SCtgTask*);
-typedef int32_t (*ctgHandleTaskMsgRspFp)(SCtgTask*, int32_t, const SDataBuf *, int32_t);
+typedef int32_t (*ctgHandleTaskMsgRspFp)(SCtgTaskReq*, int32_t, const SDataBuf *, int32_t);
 typedef int32_t (*ctgDumpTaskResFp)(SCtgTask*);
 typedef int32_t (*ctgCloneTaskResFp)(SCtgTask*, void**);
 typedef int32_t (*ctgCompTaskFp)(SCtgTask*, void*, bool*);
@@ -487,6 +524,8 @@ typedef struct SCtgOperation {
 #define CTG_FLAG_MAKE_STB(_isStb) (((_isStb) == 1) ? CTG_FLAG_STB : ((_isStb) == 0 ? CTG_FLAG_NOT_STB : CTG_FLAG_UNKNOWN_STB))
 #define CTG_FLAG_MATCH_STB(_flag, tbType) (CTG_FLAG_IS_UNKNOWN_STB(_flag) || (CTG_FLAG_IS_STB(_flag) && (tbType) == TSDB_SUPER_TABLE) || (CTG_FLAG_IS_NOT_STB(_flag) && (tbType) != TSDB_SUPER_TABLE))
 
+#define CTG_GET_TASK_MSGCTX(_task, _id) (((CTG_TASK_GET_TB_META_BATCH == (_task)->type) || (CTG_TASK_GET_TB_HASH_BATCH == (_task)->type)) ? taosArrayGet((_task)->msgCtxs, (_id)) : &(_task)->msgCtx)
+
 #define CTG_META_SIZE(pMeta) (sizeof(STableMeta) + ((pMeta)->tableInfo.numOfTags + (pMeta)->tableInfo.numOfColumns) * sizeof(SSchema))
 
 #define CTG_TABLE_NOT_EXIST(code) (code == CTG_ERR_CODE_TABLE_NOT_EXIST) 
@@ -586,6 +625,7 @@ int32_t ctgdShowCacheInfo(void);
 
 int32_t ctgRemoveTbMetaFromCache(SCatalog* pCtg, SName* pTableName, bool syncReq);
 int32_t ctgGetTbMetaFromCache(SCatalog* pCtg, SRequestConnInfo *pConn, SCtgTbMetaCtx* ctx, STableMeta** pTableMeta);
+int32_t ctgGetTbMetasFromCache(SCatalog* pCtg, SRequestConnInfo *pConn, SCtgTbMetasCtx* ctx, int32_t dbIdx, int32_t *fetchIdx, int32_t baseResIdx, SArray* pList);
 
 int32_t ctgOpUpdateVgroup(SCtgCacheOperation *action);
 int32_t ctgOpUpdateTbMeta(SCtgCacheOperation *action);
@@ -631,7 +671,7 @@ int32_t ctgGetTbHashVgroupFromCache(SCatalog *pCtg, const SName *pTableName, SVg
 
 
 int32_t ctgProcessRspMsg(void* out, int32_t reqType, char* msg, int32_t msgSize, int32_t rspCode, char* target);
-int32_t ctgGetDBVgInfoFromMnode(SCatalog* pCtg, SRequestConnInfo *pConn, SBuildUseDBInput *input, SUseDbOutput *out, SCtgTask* pTask);
+int32_t ctgGetDBVgInfoFromMnode(SCatalog* pCtg, SRequestConnInfo *pConn, SBuildUseDBInput *input, SUseDbOutput *out, SCtgTaskReq* tReq);
 int32_t ctgGetQnodeListFromMnode(SCatalog* pCtg, SRequestConnInfo *pConn, SArray *out, SCtgTask* pTask);
 int32_t ctgGetDnodeListFromMnode(SCatalog* pCtg, SRequestConnInfo *pConn, SArray **out, SCtgTask* pTask);
 int32_t ctgGetDBCfgFromMnode(SCatalog* pCtg, SRequestConnInfo *pConn, const char *dbFName, SDbCfgInfo *out, SCtgTask* pTask);
@@ -639,9 +679,9 @@ int32_t ctgGetIndexInfoFromMnode(SCatalog* pCtg, SRequestConnInfo *pConn, const
 int32_t ctgGetTbIndexFromMnode(SCatalog* pCtg, SRequestConnInfo *pConn, SName *name, STableIndex* out, SCtgTask* pTask);
 int32_t ctgGetUdfInfoFromMnode(SCatalog* pCtg, SRequestConnInfo *pConn, const char *funcName, SFuncInfo *out, SCtgTask* pTask);
 int32_t ctgGetUserDbAuthFromMnode(SCatalog* pCtg, SRequestConnInfo *pConn, const char *user, SGetUserAuthRsp *out, SCtgTask* pTask);
-int32_t ctgGetTbMetaFromMnodeImpl(SCatalog* pCtg, SRequestConnInfo *pConn, char *dbFName, char* tbName, STableMetaOutput* out, SCtgTask* pTask);
-int32_t ctgGetTbMetaFromMnode(SCatalog* pCtg, SRequestConnInfo *pConn, const SName* pTableName, STableMetaOutput* out, SCtgTask* pTask);
-int32_t ctgGetTbMetaFromVnode(SCatalog* pCtg, SRequestConnInfo *pConn, const SName* pTableName, SVgroupInfo *vgroupInfo, STableMetaOutput* out, SCtgTask* pTask);
+int32_t ctgGetTbMetaFromMnodeImpl(SCatalog* pCtg, SRequestConnInfo *pConn, char *dbFName, char* tbName, STableMetaOutput* out, SCtgTaskReq* tReq);
+int32_t ctgGetTbMetaFromMnode(SCatalog* pCtg, SRequestConnInfo *pConn, const SName* pTableName, STableMetaOutput* out, SCtgTaskReq* tReq);
+int32_t ctgGetTbMetaFromVnode(SCatalog* pCtg, SRequestConnInfo *pConn, const SName* pTableName, SVgroupInfo *vgroupInfo, STableMetaOutput* out, SCtgTaskReq* tReq);
 int32_t ctgGetTableCfgFromVnode(SCatalog* pCtg, SRequestConnInfo *pConn, const SName* pTableName, SVgroupInfo *vgroupInfo, STableCfg **out, SCtgTask* pTask);
 int32_t ctgGetTableCfgFromMnode(SCatalog* pCtg, SRequestConnInfo *pConn, const SName* pTableName, STableCfg **out, SCtgTask* pTask);
 int32_t ctgGetSvrVerFromMnode(SCatalog* pCtg, SRequestConnInfo *pConn, char **out, SCtgTask* pTask);
@@ -664,6 +704,7 @@ void    ctgFreeJob(void* job);
 void    ctgFreeHandleImpl(SCatalog* pCtg);
 void    ctgFreeVgInfo(SDBVgInfo *vgInfo);
 int32_t ctgGetVgInfoFromHashValue(SCatalog *pCtg, SDBVgInfo *dbInfo, const SName *pTableName, SVgroupInfo *pVgroup);
+int32_t ctgGetVgInfosFromHashValue(SCatalog *pCtg, SCtgTaskReq* tReq, SDBVgInfo *dbInfo, SCtgTbHashsCtx *pCtx, char* dbFName, SArray* pNames, bool update);
 void    ctgResetTbMetaTask(SCtgTask* pTask);
 void    ctgFreeDbCache(SCtgDBCache *dbCache);
 int32_t ctgStbVersionSortCompare(const void* key1, const void* key2);
@@ -672,8 +713,11 @@ int32_t ctgStbVersionSearchCompare(const void* key1, const void* key2);
 int32_t ctgDbVgVersionSearchCompare(const void* key1, const void* key2);
 void    ctgFreeSTableMetaOutput(STableMetaOutput* pOutput);
 int32_t ctgUpdateMsgCtx(SCtgMsgCtx* pCtx, int32_t reqType, void* out, char* target);
+int32_t ctgAddMsgCtx(SArray* pCtxs, int32_t reqType, void* out, char* target);
 char *  ctgTaskTypeStr(CTG_TASK_TYPE type);
 int32_t ctgUpdateSendTargetInfo(SMsgSendInfo *pMsgSendInfo, int32_t msgType, char* dbFName, int32_t vgId);
+int32_t ctgGetTablesReqNum(SArray *pList);
+int32_t ctgAddFetch(SArray** pFetchs, int32_t dbIdx, int32_t tbIdx, int32_t *fetchIdx, int32_t resIdx, int32_t flag);
 int32_t ctgCloneTableIndex(SArray* pIndex, SArray** pRes);
 void    ctgFreeSTableIndex(void *info);
 void    ctgClearSubTaskRes(SCtgSubRes *pRes);
@@ -682,6 +726,7 @@ void    ctgClearHandle(SCatalog* pCtg);
 void    ctgFreeTbCacheImpl(SCtgTbCache *pCache);
 int32_t ctgRemoveTbMeta(SCatalog* pCtg, SName* pTableName);
 int32_t ctgGetTbHashVgroup(SCatalog *pCtg, SRequestConnInfo *pConn, const SName *pTableName, SVgroupInfo *pVgroup);
+SName*  ctgGetFetchName(SArray* pNames, SCtgFetch* pFetch);
 
 
 extern SCatalogMgmt gCtgMgmt;

source/libs/catalog/src/ctgAsync.c

@@ -50,6 +50,31 @@ int32_t ctgInitGetTbMetaTask(SCtgJob *pJob, int32_t taskIdx, void* param) {
   return TSDB_CODE_SUCCESS;
 }
 
+int32_t ctgInitGetTbMetasTask(SCtgJob *pJob, int32_t taskIdx, void* param) {
+  SName *name = (SName*)param;
+  SCtgTask task = {0};
+
+  task.type = CTG_TASK_GET_TB_META_BATCH;
+  task.taskId = taskIdx;
+  task.pJob = pJob;
+
+  task.taskCtx = taosMemoryCalloc(1, sizeof(SCtgTbMetasCtx));
+  if (NULL == task.taskCtx) {
+    CTG_ERR_RET(TSDB_CODE_OUT_OF_MEMORY);
+  }
+
+  SCtgTbMetasCtx* ctx = task.taskCtx;
+  ctx->pNames = param;
+  ctx->pResList = taosArrayInit(pJob->tbMetaNum, sizeof(SMetaRes));
+
+  taosArrayPush(pJob->pTasks, &task);
+
+  qDebug("QID:0x%" PRIx64 " the %dth task type %s initialized, dbNum:%d, tbNum:%d", 
+         pJob->queryId, taskIdx, ctgTaskTypeStr(task.type), taosArrayGetSize(ctx->pNames), pJob->tbMetaNum);
+
+  return TSDB_CODE_SUCCESS;
+}
+
 int32_t ctgInitGetDbVgTask(SCtgJob *pJob, int32_t taskIdx, void* param) {
   char *dbFName = (char*)param;
   SCtgTask task = {0};
@@ -153,6 +178,32 @@ int32_t ctgInitGetTbHashTask(SCtgJob *pJob, int32_t taskIdx, void* param) {
   return TSDB_CODE_SUCCESS;
 }
 
+int32_t ctgInitGetTbHashsTask(SCtgJob *pJob, int32_t taskIdx, void* param) {
+  SName *name = (SName*)param;
+  SCtgTask task = {0};
+
+  task.type = CTG_TASK_GET_TB_HASH_BATCH;
+  task.taskId = taskIdx;
+  task.pJob = pJob;
+
+  task.taskCtx = taosMemoryCalloc(1, sizeof(SCtgTbHashsCtx));
+  if (NULL == task.taskCtx) {
+    CTG_ERR_RET(TSDB_CODE_OUT_OF_MEMORY);
+  }
+
+  SCtgTbHashsCtx* ctx = task.taskCtx;
+  ctx->pNames = param;
+  ctx->pResList = taosArrayInit(pJob->tbHashNum, sizeof(SMetaRes));
+
+  taosArrayPush(pJob->pTasks, &task);
+
+  qDebug("QID:0x%" PRIx64 " the %dth task type %s initialized, dbNum:%d, tbNum:%d", 
+         pJob->queryId, taskIdx, ctgTaskTypeStr(task.type), taosArrayGetSize(ctx->pNames), pJob->tbHashNum);
+
+  return TSDB_CODE_SUCCESS;
+}
+
+
 int32_t ctgInitGetQnodeTask(SCtgJob *pJob, int32_t taskIdx, void* param) {
   SCtgTask task = {0};
 
@@ -328,10 +379,12 @@ int32_t ctgInitGetTbCfgTask(SCtgJob *pJob, int32_t taskIdx, void* param) {
 }
 
 
-
 int32_t ctgHandleForceUpdate(SCatalog* pCtg, int32_t taskNum, SCtgJob *pJob, const SCatalogReq* pReq) {
   SHashObj* pDb = taosHashInit(taskNum, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), false, HASH_NO_LOCK);
-  if (NULL == pDb) {
+  SHashObj* pTb = taosHashInit(taskNum, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), false, HASH_NO_LOCK);
+  if (NULL == pDb || NULL == pTb) {
+    taosHashCleanup(pDb);
+    taosHashCleanup(pTb);
     CTG_ERR_RET(TSDB_CODE_OUT_OF_MEMORY);
   }
   
@@ -350,18 +403,26 @@ int32_t ctgHandleForceUpdate(SCatalog* pCtg, int32_t taskNum, SCtgJob *pJob, con
     taosHashPut(pDb, dbFName, strlen(dbFName), dbFName, TSDB_DB_FNAME_LEN);
   }
 
-  for (int32_t i = 0; i < pJob->tbMetaNum; ++i) {
-    SName* name = taosArrayGet(pReq->pTableMeta, i);
-    char dbFName[TSDB_DB_FNAME_LEN];
-    tNameGetFullDbName(name, dbFName);
-    taosHashPut(pDb, dbFName, strlen(dbFName), dbFName, TSDB_DB_FNAME_LEN);
+  int32_t dbNum = taosArrayGetSize(pReq->pTableMeta);
+  for (int32_t i = 0; i < dbNum; ++i) {
+    STablesReq* p = taosArrayGet(pReq->pTableMeta, i);
+    taosHashPut(pDb, p->dbFName, strlen(p->dbFName), p->dbFName, TSDB_DB_FNAME_LEN);
+    int32_t tbNum = taosArrayGetSize(p->pTables);
+    for (int32_t m = 0; m < tbNum; ++m) {
+      SName* name = taosArrayGet(p->pTables, m);
+      taosHashPut(pTb, name, sizeof(SName), name, sizeof(SName));
+    }
   }
 
-  for (int32_t i = 0; i < pJob->tbHashNum; ++i) {
-    SName* name = taosArrayGet(pReq->pTableHash, i);
-    char dbFName[TSDB_DB_FNAME_LEN];
-    tNameGetFullDbName(name, dbFName);
-    taosHashPut(pDb, dbFName, strlen(dbFName), dbFName, TSDB_DB_FNAME_LEN);
+  dbNum = taosArrayGetSize(pReq->pTableHash);
+  for (int32_t i = 0; i < dbNum; ++i) {
+    STablesReq* p = taosArrayGet(pReq->pTableHash, i);
+    taosHashPut(pDb, p->dbFName, strlen(p->dbFName), p->dbFName, TSDB_DB_FNAME_LEN);
+    int32_t tbNum = taosArrayGetSize(p->pTables);
+    for (int32_t m = 0; m < tbNum; ++m) {
+      SName* name = taosArrayGet(p->pTables, m);
+      taosHashPut(pTb, name, sizeof(SName), name, sizeof(SName));
+    }
   }
 
   for (int32_t i = 0; i < pJob->tbCfgNum; ++i) {
@@ -380,16 +441,6 @@ int32_t ctgHandleForceUpdate(SCatalog* pCtg, int32_t taskNum, SCtgJob *pJob, con
   taosHashCleanup(pDb);
 
   // REFRESH TABLE META
-  SHashObj* pTb = taosHashInit(taskNum, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), false, HASH_NO_LOCK);
-  for (int32_t i = 0; i < pJob->tbMetaNum; ++i) {
-    SName* name = taosArrayGet(pReq->pTableMeta, i);
-    taosHashPut(pTb, name, sizeof(SName), name, sizeof(SName));
-  }
-  
-  for (int32_t i = 0; i < pJob->tbHashNum; ++i) {
-    SName* name = taosArrayGet(pReq->pTableHash, i);
-    taosHashPut(pTb, name, sizeof(SName), name, sizeof(SName));
-  }
 
   for (int32_t i = 0; i < pJob->tbCfgNum; ++i) {
     SName* name = taosArrayGet(pReq->pTableCfg, i);
@@ -429,9 +480,9 @@ int32_t ctgInitTask(SCtgJob *pJob, CTG_TASK_TYPE type, void* param, int32_t *tas
 
 int32_t ctgInitJob(SCatalog* pCtg, SRequestConnInfo *pConn, SCtgJob** job, const SCatalogReq* pReq, catalogCallback fp, void* param) {
   int32_t code = 0;
-  int32_t tbMetaNum = (int32_t)taosArrayGetSize(pReq->pTableMeta);
+  int32_t tbMetaNum = (int32_t)ctgGetTablesReqNum(pReq->pTableMeta);
   int32_t dbVgNum = (int32_t)taosArrayGetSize(pReq->pDbVgroup);
-  int32_t tbHashNum = (int32_t)taosArrayGetSize(pReq->pTableHash);
+  int32_t tbHashNum = (int32_t)ctgGetTablesReqNum(pReq->pTableHash);
   int32_t udfNum = (int32_t)taosArrayGetSize(pReq->pUdf);
   int32_t qnodeNum = pReq->qNodeRequired ? 1 : 0;
   int32_t dnodeNum = pReq->dNodeRequired ? 1 : 0;
@@ -453,6 +504,7 @@ int32_t ctgInitJob(SCatalog* pCtg, SRequestConnInfo *pConn, SCtgJob** job, const
 
   SCtgJob *pJob = *job;
 
+  pJob->subTaskNum = taskNum;
   pJob->queryId = pConn->requestId;
   pJob->userFp = fp;
   pJob->pCtg    = pCtg;
@@ -506,15 +558,27 @@ int32_t ctgInitJob(SCatalog* pCtg, SRequestConnInfo *pConn, SCtgJob** job, const
     CTG_ERR_JRET(ctgInitTask(pJob, CTG_TASK_GET_DB_INFO, dbFName, NULL));
   }
 
+#if 0
   for (int32_t i = 0; i < tbMetaNum; ++i) {
     SName* name = taosArrayGet(pReq->pTableMeta, i);
     CTG_ERR_JRET(ctgInitTask(pJob, CTG_TASK_GET_TB_META, name, NULL));
   }
+#else
+  if (tbMetaNum > 0) {
+    CTG_ERR_JRET(ctgInitTask(pJob, CTG_TASK_GET_TB_META_BATCH, pReq->pTableMeta, NULL));
+  }
+#endif
 
+#if 0
   for (int32_t i = 0; i < tbHashNum; ++i) {
     SName* name = taosArrayGet(pReq->pTableHash, i);
     CTG_ERR_JRET(ctgInitTask(pJob, CTG_TASK_GET_TB_HASH, name, NULL));
   }
+#else
+  if (tbHashNum > 0) {
+    CTG_ERR_JRET(ctgInitTask(pJob, CTG_TASK_GET_TB_HASH_BATCH, pReq->pTableHash, NULL));
+  }
+#endif
 
   for (int32_t i = 0; i < tbIndexNum; ++i) {
     SName* name = taosArrayGet(pReq->pTableIndex, i);
@@ -586,6 +650,15 @@ int32_t ctgDumpTbMetaRes(SCtgTask* pTask) {
   return TSDB_CODE_SUCCESS;
 }
 
+int32_t ctgDumpTbMetasRes(SCtgTask* pTask) {
+  SCtgJob* pJob = pTask->pJob;
+
+  pJob->jobRes.pTableMeta = pTask->res;
+
+  return TSDB_CODE_SUCCESS;
+}
+
+
 int32_t ctgDumpDbVgRes(SCtgTask* pTask) {
   SCtgJob* pJob = pTask->pJob;
   if (NULL == pJob->jobRes.pDbVgroup) {
@@ -616,6 +689,14 @@ int32_t ctgDumpTbHashRes(SCtgTask* pTask) {
   return TSDB_CODE_SUCCESS;
 }
 
+int32_t ctgDumpTbHashsRes(SCtgTask* pTask) {
+  SCtgJob* pJob = pTask->pJob;
+
+  pJob->jobRes.pTableHash = pTask->res;
+
+  return TSDB_CODE_SUCCESS;
+}
+
 int32_t ctgDumpTbIndexRes(SCtgTask* pTask) {
   SCtgJob* pJob = pTask->pJob;
   if (NULL == pJob->jobRes.pTableIndex) {
@@ -844,46 +925,51 @@ _return:
   CTG_RET(code);
 }
 
-int32_t ctgHandleGetTbMetaRsp(SCtgTask* pTask, int32_t reqType, const SDataBuf *pMsg, int32_t rspCode) {
+int32_t ctgHandleGetTbMetaRsp(SCtgTaskReq* tReq, int32_t reqType, const SDataBuf *pMsg, int32_t rspCode) {
   int32_t code = 0;
   SCtgDBCache *dbCache = NULL;
-  SCtgTbMetaCtx* ctx = (SCtgTbMetaCtx*)pTask->taskCtx;
+  SCtgTask* pTask = tReq->pTask;
   SCatalog* pCtg = pTask->pJob->pCtg; 
   SRequestConnInfo* pConn = &pTask->pJob->conn;
+  SCtgMsgCtx* pMsgCtx = CTG_GET_TASK_MSGCTX(pTask, tReq->msgIdx);
+  SCtgTbMetaCtx* ctx = (SCtgTbMetaCtx*)pTask->taskCtx;
+  SName* pName = ctx->pName;
+  int32_t flag = ctx->flag;
+  int32_t* vgId = &ctx->vgId;
 
-  CTG_ERR_JRET(ctgProcessRspMsg(pTask->msgCtx.out, reqType, pMsg->pData, pMsg->len, rspCode, pTask->msgCtx.target));
+  CTG_ERR_JRET(ctgProcessRspMsg(pMsgCtx->out, reqType, pMsg->pData, pMsg->len, rspCode, pMsgCtx->target));
 
   switch (reqType) {
     case TDMT_MND_USE_DB: {
-      SUseDbOutput* pOut = (SUseDbOutput*)pTask->msgCtx.out;
+      SUseDbOutput* pOut = (SUseDbOutput*)pMsgCtx->out;
 
       SVgroupInfo vgInfo = {0};
-      CTG_ERR_JRET(ctgGetVgInfoFromHashValue(pCtg, pOut->dbVgroup, ctx->pName, &vgInfo));
+      CTG_ERR_JRET(ctgGetVgInfoFromHashValue(pCtg, pOut->dbVgroup, pName, &vgInfo));
 
-      ctgDebug("will refresh tbmeta, not supposed to be stb, tbName:%s, flag:%d", tNameGetTableName(ctx->pName), ctx->flag);
+      ctgDebug("will refresh tbmeta, not supposed to be stb, tbName:%s, flag:%d", tNameGetTableName(pName), flag);
 
-      ctx->vgId = vgInfo.vgId;
-      CTG_ERR_JRET(ctgGetTbMetaFromVnode(pCtg, pConn, ctx->pName, &vgInfo, NULL, pTask));
+      *vgId = vgInfo.vgId;
+      CTG_ERR_JRET(ctgGetTbMetaFromVnode(pCtg, pConn, pName, &vgInfo, NULL, tReq));
 
       return TSDB_CODE_SUCCESS;
     }
     case TDMT_MND_TABLE_META: {
-      STableMetaOutput* pOut = (STableMetaOutput*)pTask->msgCtx.out;
+      STableMetaOutput* pOut = (STableMetaOutput*)pMsgCtx->out;
       
       if (CTG_IS_META_NULL(pOut->metaType)) {
-        if (CTG_FLAG_IS_STB(ctx->flag)) {
+        if (CTG_FLAG_IS_STB(flag)) {
           char dbFName[TSDB_DB_FNAME_LEN] = {0};
-          tNameGetFullDbName(ctx->pName, dbFName);
+          tNameGetFullDbName(pName, dbFName);
           
           CTG_ERR_RET(ctgAcquireVgInfoFromCache(pCtg, dbFName, &dbCache));
           if (NULL != dbCache) {
             SVgroupInfo vgInfo = {0};
-            CTG_ERR_JRET(ctgGetVgInfoFromHashValue(pCtg, dbCache->vgCache.vgInfo, ctx->pName, &vgInfo));
+            CTG_ERR_JRET(ctgGetVgInfoFromHashValue(pCtg, dbCache->vgCache.vgInfo, pName, &vgInfo));
           
-            ctgDebug("will refresh tbmeta, supposed to be stb, tbName:%s, flag:%d", tNameGetTableName(ctx->pName), ctx->flag);
+            ctgDebug("will refresh tbmeta, supposed to be stb, tbName:%s, flag:%d", tNameGetTableName(pName), flag);
 
-            ctx->vgId = vgInfo.vgId;          
-            CTG_ERR_JRET(ctgGetTbMetaFromVnode(pCtg, pConn, ctx->pName, &vgInfo, NULL, pTask));
+            *vgId = vgInfo.vgId;          
+            CTG_ERR_JRET(ctgGetTbMetaFromVnode(pCtg, pConn, pName, &vgInfo, NULL, tReq));
 
             ctgReleaseVgInfoToCache(pCtg, dbCache);
           } else {
@@ -892,58 +978,231 @@ int32_t ctgHandleGetTbMetaRsp(SCtgTask* pTask, int32_t reqType, const SDataBuf *
             tstrncpy(input.db, dbFName, tListLen(input.db));
             input.vgVersion = CTG_DEFAULT_INVALID_VERSION;
           
-            CTG_ERR_JRET(ctgGetDBVgInfoFromMnode(pCtg, pConn, &input, NULL, pTask));
+            CTG_ERR_JRET(ctgGetDBVgInfoFromMnode(pCtg, pConn, &input, NULL, tReq));
           }
 
           return TSDB_CODE_SUCCESS;
         }
         
-        ctgError("no tbmeta got, tbName:%s", tNameGetTableName(ctx->pName));
-        ctgRemoveTbMetaFromCache(pCtg, ctx->pName, false);
+        ctgError("no tbmeta got, tbName:%s", tNameGetTableName(pName));
+        ctgRemoveTbMetaFromCache(pCtg, pName, false);
         
         CTG_ERR_JRET(CTG_ERR_CODE_TABLE_NOT_EXIST);
       }
 
-      if (pTask->msgCtx.lastOut) {
-        TSWAP(pTask->msgCtx.out, pTask->msgCtx.lastOut);
-        STableMetaOutput* pLastOut = (STableMetaOutput*)pTask->msgCtx.out;
+      if (pMsgCtx->lastOut) {
+        TSWAP(pMsgCtx->out, pMsgCtx->lastOut);
+        STableMetaOutput* pLastOut = (STableMetaOutput*)pMsgCtx->out;
         TSWAP(pLastOut->tbMeta, pOut->tbMeta);
       }
       
       break;
     }
     case TDMT_VND_TABLE_META: {
-      STableMetaOutput* pOut = (STableMetaOutput*)pTask->msgCtx.out;
+      STableMetaOutput* pOut = (STableMetaOutput*)pMsgCtx->out;
       
       if (CTG_IS_META_NULL(pOut->metaType)) {
-        ctgError("no tbmeta got, tbNmae:%s", tNameGetTableName(ctx->pName));
-        ctgRemoveTbMetaFromCache(pCtg, ctx->pName, false);
+        ctgError("no tbmeta got, tbNmae:%s", tNameGetTableName(pName));
+        ctgRemoveTbMetaFromCache(pCtg, pName, false);
         CTG_ERR_JRET(CTG_ERR_CODE_TABLE_NOT_EXIST);
       }
 
-      if (CTG_FLAG_IS_STB(ctx->flag)) {
+      if (CTG_FLAG_IS_STB(flag)) {
         break;
       }
       
       if (CTG_IS_META_TABLE(pOut->metaType) && TSDB_SUPER_TABLE == pOut->tbMeta->tableType) {
-        ctgDebug("will continue to refresh tbmeta since got stb, tbName:%s", tNameGetTableName(ctx->pName));
+        ctgDebug("will continue to refresh tbmeta since got stb, tbName:%s", tNameGetTableName(pName));
       
         taosMemoryFreeClear(pOut->tbMeta);
         
-        CTG_RET(ctgGetTbMetaFromMnode(pCtg, pConn, ctx->pName, NULL, pTask));
+        CTG_RET(ctgGetTbMetaFromMnode(pCtg, pConn, pName, NULL, tReq));
       } else if (CTG_IS_META_BOTH(pOut->metaType)) {
         int32_t exist = 0;
-        if (!CTG_FLAG_IS_FORCE_UPDATE(ctx->flag)) {
-          CTG_ERR_JRET(ctgTbMetaExistInCache(pCtg, pOut->dbFName, pOut->tbName, &exist));
+        if (!CTG_FLAG_IS_FORCE_UPDATE(flag)) {
+          SName stbName = *pName;
+          strcpy(stbName.tname, pOut->tbName);
+          SCtgTbMetaCtx stbCtx = {0};
+          stbCtx.flag = flag;
+          stbCtx.pName = &stbName;
+
+          taosMemoryFreeClear(pOut->tbMeta);          
+          CTG_ERR_JRET(ctgReadTbMetaFromCache(pCtg, &stbCtx, &pOut->tbMeta));
+          if (pOut->tbMeta) {
+            exist = 1;
+          }
         }
       
         if (0 == exist) {
-          TSWAP(pTask->msgCtx.lastOut, pTask->msgCtx.out);
-          CTG_RET(ctgGetTbMetaFromMnodeImpl(pCtg, pConn, pOut->dbFName, pOut->tbName, NULL, pTask));
+          TSWAP(pMsgCtx->lastOut, pMsgCtx->out);
+          CTG_RET(ctgGetTbMetaFromMnodeImpl(pCtg, pConn, pOut->dbFName, pOut->tbName, NULL, tReq));
+        }
+      }
+      break;
+    }
+    default:
+      ctgError("invalid reqType %d", reqType);
+      CTG_ERR_JRET(TSDB_CODE_INVALID_MSG);
+      break;
+  }
+
+  STableMetaOutput* pOut = (STableMetaOutput*)pMsgCtx->out;
+
+  ctgUpdateTbMetaToCache(pCtg, pOut, false);
+
+  if (CTG_IS_META_BOTH(pOut->metaType)) {
+    memcpy(pOut->tbMeta, &pOut->ctbMeta, sizeof(pOut->ctbMeta));
+  }
+  
+/*
+  else if (CTG_IS_META_CTABLE(pOut->metaType)) {
+    SName stbName = *pName;
+    strcpy(stbName.tname, pOut->tbName);
+    SCtgTbMetaCtx stbCtx = {0};
+    stbCtx.flag = flag;
+    stbCtx.pName = &stbName;
+    
+    CTG_ERR_JRET(ctgReadTbMetaFromCache(pCtg, &stbCtx, &pOut->tbMeta));
+    if (NULL == pOut->tbMeta) {
+      ctgDebug("stb no longer exist, stbName:%s", stbName.tname);
+      CTG_ERR_JRET(ctgRelaunchGetTbMetaTask(pTask));
+
+      return TSDB_CODE_SUCCESS;
+    }
+
+    memcpy(pOut->tbMeta, &pOut->ctbMeta, sizeof(pOut->ctbMeta));
+  }
+*/
+
+  TSWAP(pTask->res, pOut->tbMeta);
+
+_return:
+
+  if (dbCache) {
+    ctgReleaseVgInfoToCache(pCtg, dbCache);
+  }
+
+  if (pTask->res) {
+    ctgHandleTaskEnd(pTask, code);
+  }
+  
+  CTG_RET(code);
+}
+
+
+int32_t ctgHandleGetTbMetasRsp(SCtgTaskReq* tReq, int32_t reqType, const SDataBuf *pMsg, int32_t rspCode) {
+  int32_t code = 0;
+  SCtgDBCache *dbCache = NULL;
+  SCtgTask* pTask = tReq->pTask;
+  SCatalog* pCtg = pTask->pJob->pCtg; 
+  SRequestConnInfo* pConn = &pTask->pJob->conn;
+  SCtgMsgCtx* pMsgCtx = CTG_GET_TASK_MSGCTX(pTask, tReq->msgIdx);
+  SCtgTbMetasCtx* ctx = (SCtgTbMetasCtx*)pTask->taskCtx;
+  SCtgFetch* pFetch = taosArrayGet(ctx->pFetchs, tReq->msgIdx);
+  SName* pName = ctgGetFetchName(ctx->pNames, pFetch);
+  int32_t flag = pFetch->flag;
+  int32_t* vgId = &pFetch->vgId;
+
+  CTG_ERR_JRET(ctgProcessRspMsg(pMsgCtx->out, reqType, pMsg->pData, pMsg->len, rspCode, pMsgCtx->target));
+
+  switch (reqType) {
+    case TDMT_MND_USE_DB: {
+      SUseDbOutput* pOut = (SUseDbOutput*)pMsgCtx->out;
+
+      SVgroupInfo vgInfo = {0};
+      CTG_ERR_JRET(ctgGetVgInfoFromHashValue(pCtg, pOut->dbVgroup, pName, &vgInfo));
+
+      ctgDebug("will refresh tbmeta, not supposed to be stb, tbName:%s, flag:%d", tNameGetTableName(pName), flag);
+
+      *vgId = vgInfo.vgId;
+      CTG_ERR_JRET(ctgGetTbMetaFromVnode(pCtg, pConn, pName, &vgInfo, NULL, tReq));
+
+      return TSDB_CODE_SUCCESS;
+    }
+    case TDMT_MND_TABLE_META: {
+      STableMetaOutput* pOut = (STableMetaOutput*)pMsgCtx->out;
+      
+      if (CTG_IS_META_NULL(pOut->metaType)) {
+        if (CTG_FLAG_IS_STB(flag)) {
+          char dbFName[TSDB_DB_FNAME_LEN] = {0};
+          tNameGetFullDbName(pName, dbFName);
+          
+          CTG_ERR_RET(ctgAcquireVgInfoFromCache(pCtg, dbFName, &dbCache));
+          if (NULL != dbCache) {
+            SVgroupInfo vgInfo = {0};
+            CTG_ERR_JRET(ctgGetVgInfoFromHashValue(pCtg, dbCache->vgCache.vgInfo, pName, &vgInfo));
+          
+            ctgDebug("will refresh tbmeta, supposed to be stb, tbName:%s, flag:%d", tNameGetTableName(pName), flag);
+
+            *vgId = vgInfo.vgId;          
+            CTG_ERR_JRET(ctgGetTbMetaFromVnode(pCtg, pConn, pName, &vgInfo, NULL, tReq));
+
+            ctgReleaseVgInfoToCache(pCtg, dbCache);
           } else {
+            SBuildUseDBInput input = {0};
+          
+            tstrncpy(input.db, dbFName, tListLen(input.db));
+            input.vgVersion = CTG_DEFAULT_INVALID_VERSION;
+          
+            CTG_ERR_JRET(ctgGetDBVgInfoFromMnode(pCtg, pConn, &input, NULL, tReq));
+          }
+
+          return TSDB_CODE_SUCCESS;
+        }
+        
+        ctgError("no tbmeta got, tbName:%s", tNameGetTableName(pName));
+        ctgRemoveTbMetaFromCache(pCtg, pName, false);
+        
+        CTG_ERR_JRET(CTG_ERR_CODE_TABLE_NOT_EXIST);
+      }
+
+      if (pMsgCtx->lastOut) {
+        TSWAP(pMsgCtx->out, pMsgCtx->lastOut);
+        STableMetaOutput* pLastOut = (STableMetaOutput*)pMsgCtx->out;
+        TSWAP(pLastOut->tbMeta, pOut->tbMeta);
+      }
+      
+      break;
+    }
+    case TDMT_VND_TABLE_META: {
+      STableMetaOutput* pOut = (STableMetaOutput*)pMsgCtx->out;
+      
+      if (CTG_IS_META_NULL(pOut->metaType)) {
+        ctgError("no tbmeta got, tbNmae:%s", tNameGetTableName(pName));
+        ctgRemoveTbMetaFromCache(pCtg, pName, false);
+        CTG_ERR_JRET(CTG_ERR_CODE_TABLE_NOT_EXIST);
+      }
+
+      if (CTG_FLAG_IS_STB(flag)) {
+        break;
+      }
+      
+      if (CTG_IS_META_TABLE(pOut->metaType) && TSDB_SUPER_TABLE == pOut->tbMeta->tableType) {
+        ctgDebug("will continue to refresh tbmeta since got stb, tbName:%s", tNameGetTableName(pName));
+      
+        taosMemoryFreeClear(pOut->tbMeta);
+        
+        CTG_RET(ctgGetTbMetaFromMnode(pCtg, pConn, pName, NULL, tReq));
+      } else if (CTG_IS_META_BOTH(pOut->metaType)) {
+        int32_t exist = 0;
+        if (!CTG_FLAG_IS_FORCE_UPDATE(flag)) {
+          SName stbName = *pName;
+          strcpy(stbName.tname, pOut->tbName);
+          SCtgTbMetaCtx stbCtx = {0};
+          stbCtx.flag = flag;
+          stbCtx.pName = &stbName;
+
           taosMemoryFreeClear(pOut->tbMeta);          
+          CTG_ERR_JRET(ctgReadTbMetaFromCache(pCtg, &stbCtx, &pOut->tbMeta));
+          if (pOut->tbMeta) {
+            ctgDebug("use cached stb meta, tbName:%s", tNameGetTableName(pName));
+            exist = 1;
+          }
+        }
       
-          SET_META_TYPE_CTABLE(pOut->metaType); 
+        if (0 == exist) {
+          TSWAP(pMsgCtx->lastOut, pMsgCtx->out);
+          CTG_RET(ctgGetTbMetaFromMnodeImpl(pCtg, pConn, pOut->dbFName, pOut->tbName, NULL, tReq));
         }
       }
       break;
@@ -954,17 +1213,20 @@ int32_t ctgHandleGetTbMetaRsp(SCtgTask* pTask, int32_t reqType, const SDataBuf *
       break;
   }
 
-  STableMetaOutput* pOut = (STableMetaOutput*)pTask->msgCtx.out;
+  STableMetaOutput* pOut = (STableMetaOutput*)pMsgCtx->out;
 
   ctgUpdateTbMetaToCache(pCtg, pOut, false);
 
   if (CTG_IS_META_BOTH(pOut->metaType)) {
     memcpy(pOut->tbMeta, &pOut->ctbMeta, sizeof(pOut->ctbMeta));
-  } else if (CTG_IS_META_CTABLE(pOut->metaType)) {
-    SName stbName = *ctx->pName;
+  }
+  
+/*
+  else if (CTG_IS_META_CTABLE(pOut->metaType)) {
+    SName stbName = *pName;
     strcpy(stbName.tname, pOut->tbName);
     SCtgTbMetaCtx stbCtx = {0};
-    stbCtx.flag = ctx->flag;
+    stbCtx.flag = flag;
     stbCtx.pName = &stbName;
     
     CTG_ERR_JRET(ctgReadTbMetaFromCache(pCtg, &stbCtx, &pOut->tbMeta));
@@ -977,8 +1239,15 @@ int32_t ctgHandleGetTbMetaRsp(SCtgTask* pTask, int32_t reqType, const SDataBuf *
 
     memcpy(pOut->tbMeta, &pOut->ctbMeta, sizeof(pOut->ctbMeta));
   }
+*/
 
-  TSWAP(pTask->res, pOut->tbMeta);
+  SMetaRes* pRes = taosArrayGet(ctx->pResList, pFetch->resIdx);
+  pRes->code = 0;
+  pRes->pRes = pOut->tbMeta;
+  pOut->tbMeta = NULL;
+  if (0 == atomic_sub_fetch_32(&ctx->fetchNum, 1)) {
+    TSWAP(pTask->res, ctx->pResList);
+  }
 
 _return:
 
@@ -986,13 +1255,26 @@ _return:
     ctgReleaseVgInfoToCache(pCtg, dbCache);
   }
 
+  if (code) {
+    SMetaRes* pRes = taosArrayGet(ctx->pResList, pFetch->resIdx);
+    pRes->code = code;
+    pRes->pRes = NULL;
+    if (0 == atomic_sub_fetch_32(&ctx->fetchNum, 1)) {
+      TSWAP(pTask->res, ctx->pResList);
+    }
+  }
+
+  if (pTask->res) {
     ctgHandleTaskEnd(pTask, code);
+  }
   
   CTG_RET(code);
 }
 
-int32_t ctgHandleGetDbVgRsp(SCtgTask* pTask, int32_t reqType, const SDataBuf *pMsg, int32_t rspCode) {
+
+int32_t ctgHandleGetDbVgRsp(SCtgTaskReq* tReq, int32_t reqType, const SDataBuf *pMsg, int32_t rspCode) {
   int32_t code = 0;
+  SCtgTask* pTask = tReq->pTask;
   SCtgDbVgCtx* ctx = (SCtgDbVgCtx*)pTask->taskCtx;
   SCatalog* pCtg = pTask->pJob->pCtg; 
 
@@ -1024,8 +1306,9 @@ _return:
   CTG_RET(code);
 }
 
-int32_t ctgHandleGetTbHashRsp(SCtgTask* pTask, int32_t reqType, const SDataBuf *pMsg, int32_t rspCode) {
+int32_t ctgHandleGetTbHashRsp(SCtgTaskReq* tReq, int32_t reqType, const SDataBuf *pMsg, int32_t rspCode) {
   int32_t code = 0;
+  SCtgTask* pTask = tReq->pTask;
   SCtgTbHashCtx* ctx = (SCtgTbHashCtx*)pTask->taskCtx;
   SCatalog* pCtg = pTask->pJob->pCtg; 
 
@@ -1061,8 +1344,65 @@ _return:
   CTG_RET(code);
 }
 
-int32_t ctgHandleGetTbIndexRsp(SCtgTask* pTask, int32_t reqType, const SDataBuf *pMsg, int32_t rspCode) {
+int32_t ctgHandleGetTbHashsRsp(SCtgTaskReq* tReq, int32_t reqType, const SDataBuf *pMsg, int32_t rspCode) {
   int32_t code = 0;
+  SCtgTask* pTask = tReq->pTask;
+  SCtgTbHashsCtx* ctx = (SCtgTbHashsCtx*)pTask->taskCtx;
+  SCatalog* pCtg = pTask->pJob->pCtg; 
+  SCtgMsgCtx* pMsgCtx = CTG_GET_TASK_MSGCTX(pTask, tReq->msgIdx);
+  SCtgFetch* pFetch = taosArrayGet(ctx->pFetchs, tReq->msgIdx);
+
+  CTG_ERR_JRET(ctgProcessRspMsg(pMsgCtx->out, reqType, pMsg->pData, pMsg->len, rspCode, pMsgCtx->target));
+
+  switch (reqType) {
+    case TDMT_MND_USE_DB: {
+      SUseDbOutput* pOut = (SUseDbOutput*)pMsgCtx->out;
+
+      STablesReq* pReq = taosArrayGet(ctx->pNames, pFetch->dbIdx);
+      CTG_ERR_JRET(ctgGetVgInfosFromHashValue(pCtg, tReq, pOut->dbVgroup, ctx, pMsgCtx->target, pReq->pTables, true));
+     
+      CTG_ERR_JRET(ctgUpdateVgroupEnqueue(pCtg, pMsgCtx->target, pOut->dbId, pOut->dbVgroup, false));
+      pOut->dbVgroup = NULL;
+
+      break;
+    }
+    default:
+      ctgError("invalid reqType %d", reqType);
+      CTG_ERR_JRET(TSDB_CODE_INVALID_MSG);
+      break;
+  }
+
+  if (0 == atomic_sub_fetch_32(&ctx->fetchNum, 1)) {
+    TSWAP(pTask->res, ctx->pResList);
+  }
+
+_return:
+
+  if (code) {
+    STablesReq* pReq = taosArrayGet(ctx->pNames, pFetch->dbIdx);
+    int32_t num = taosArrayGetSize(pReq->pTables);
+    for (int32_t i = 0; i < num; ++i) {
+      SMetaRes *pRes = taosArrayGet(ctx->pResList, pFetch->resIdx + i);
+      pRes->code = code;
+      pRes->pRes = NULL;
+    }
+    
+    if (0 == atomic_sub_fetch_32(&ctx->fetchNum, 1)) {
+      TSWAP(pTask->res, ctx->pResList);
+    }
+  }
+
+  if (pTask->res) {
+    ctgHandleTaskEnd(pTask, code);
+  }
+
+  CTG_RET(code);
+}
+
+
+int32_t ctgHandleGetTbIndexRsp(SCtgTaskReq* tReq, int32_t reqType, const SDataBuf *pMsg, int32_t rspCode) {
+  int32_t code = 0;
+  SCtgTask* pTask = tReq->pTask;
   CTG_ERR_JRET(ctgProcessRspMsg(pTask->msgCtx.out, reqType, pMsg->pData, pMsg->len, rspCode, pTask->msgCtx.target));
 
   STableIndex* pOut = (STableIndex*)pTask->msgCtx.out;
@@ -1083,8 +1423,9 @@ _return:
   CTG_RET(code);
 }
 
-int32_t ctgHandleGetTbCfgRsp(SCtgTask* pTask, int32_t reqType, const SDataBuf *pMsg, int32_t rspCode) {
+int32_t ctgHandleGetTbCfgRsp(SCtgTaskReq* tReq, int32_t reqType, const SDataBuf *pMsg, int32_t rspCode) {
   int32_t code = 0;
+  SCtgTask* pTask = tReq->pTask;
   CTG_ERR_JRET(ctgProcessRspMsg(&pTask->msgCtx.out, reqType, pMsg->pData, pMsg->len, rspCode, pTask->msgCtx.target));
 
   TSWAP(pTask->res, pTask->msgCtx.out);
@@ -1096,8 +1437,9 @@ _return:
   CTG_RET(code);
 }
 
-int32_t ctgHandleGetDbCfgRsp(SCtgTask* pTask, int32_t reqType, const SDataBuf *pMsg, int32_t rspCode) {
+int32_t ctgHandleGetDbCfgRsp(SCtgTaskReq* tReq, int32_t reqType, const SDataBuf *pMsg, int32_t rspCode) {
   int32_t code = 0;
+  SCtgTask* pTask = tReq->pTask;
   CTG_ERR_JRET(ctgProcessRspMsg(pTask->msgCtx.out, reqType, pMsg->pData, pMsg->len, rspCode, pTask->msgCtx.target));
 
   TSWAP(pTask->res, pTask->msgCtx.out);
@@ -1109,13 +1451,14 @@ _return:
   CTG_RET(code);
 }
 
-int32_t ctgHandleGetDbInfoRsp(SCtgTask* pTask, int32_t reqType, const SDataBuf *pMsg, int32_t rspCode) {
+int32_t ctgHandleGetDbInfoRsp(SCtgTaskReq* tReq, int32_t reqType, const SDataBuf *pMsg, int32_t rspCode) {
   CTG_RET(TSDB_CODE_APP_ERROR);
 }
 
 
-int32_t ctgHandleGetQnodeRsp(SCtgTask* pTask, int32_t reqType, const SDataBuf *pMsg, int32_t rspCode) {
+int32_t ctgHandleGetQnodeRsp(SCtgTaskReq* tReq, int32_t reqType, const SDataBuf *pMsg, int32_t rspCode) {
   int32_t code = 0;
+  SCtgTask* pTask = tReq->pTask;
   CTG_ERR_JRET(ctgProcessRspMsg(pTask->msgCtx.out, reqType, pMsg->pData, pMsg->len, rspCode, pTask->msgCtx.target));
 
   TSWAP(pTask->res, pTask->msgCtx.out);
@@ -1127,8 +1470,9 @@ _return:
   CTG_RET(code);
 }
 
-int32_t ctgHandleGetDnodeRsp(SCtgTask* pTask, int32_t reqType, const SDataBuf *pMsg, int32_t rspCode) {
+int32_t ctgHandleGetDnodeRsp(SCtgTaskReq* tReq, int32_t reqType, const SDataBuf *pMsg, int32_t rspCode) {
   int32_t code = 0;
+  SCtgTask* pTask = tReq->pTask;
   CTG_ERR_JRET(ctgProcessRspMsg(&pTask->msgCtx.out, reqType, pMsg->pData, pMsg->len, rspCode, pTask->msgCtx.target));
 
   TSWAP(pTask->res, pTask->msgCtx.out);
@@ -1140,8 +1484,9 @@ _return:
   CTG_RET(code);
 }
 
-int32_t ctgHandleGetIndexRsp(SCtgTask* pTask, int32_t reqType, const SDataBuf *pMsg, int32_t rspCode) {
+int32_t ctgHandleGetIndexRsp(SCtgTaskReq* tReq, int32_t reqType, const SDataBuf *pMsg, int32_t rspCode) {
   int32_t code = 0;
+  SCtgTask* pTask = tReq->pTask;
   CTG_ERR_JRET(ctgProcessRspMsg(pTask->msgCtx.out, reqType, pMsg->pData, pMsg->len, rspCode, pTask->msgCtx.target));
 
   TSWAP(pTask->res, pTask->msgCtx.out);
@@ -1153,8 +1498,9 @@ _return:
   CTG_RET(code);
 }
 
-int32_t ctgHandleGetUdfRsp(SCtgTask* pTask, int32_t reqType, const SDataBuf *pMsg, int32_t rspCode) {
+int32_t ctgHandleGetUdfRsp(SCtgTaskReq* tReq, int32_t reqType, const SDataBuf *pMsg, int32_t rspCode) {
   int32_t code = 0;
+  SCtgTask* pTask = tReq->pTask;
   CTG_ERR_JRET(ctgProcessRspMsg(pTask->msgCtx.out, reqType, pMsg->pData, pMsg->len, rspCode, pTask->msgCtx.target));
 
   TSWAP(pTask->res, pTask->msgCtx.out);
@@ -1166,8 +1512,9 @@ _return:
   CTG_RET(code);
 }
 
-int32_t ctgHandleGetUserRsp(SCtgTask* pTask, int32_t reqType, const SDataBuf *pMsg, int32_t rspCode) {
+int32_t ctgHandleGetUserRsp(SCtgTaskReq* tReq, int32_t reqType, const SDataBuf *pMsg, int32_t rspCode) {
   int32_t code = 0;
+  SCtgTask* pTask = tReq->pTask;
   SCtgUserCtx* ctx = (SCtgUserCtx*)pTask->taskCtx;
   SCatalog* pCtg = pTask->pJob->pCtg; 
   bool pass = false;
@@ -1210,8 +1557,9 @@ _return:
   CTG_RET(code);
 }
 
-int32_t ctgHandleGetSvrVerRsp(SCtgTask* pTask, int32_t reqType, const SDataBuf *pMsg, int32_t rspCode) {
+int32_t ctgHandleGetSvrVerRsp(SCtgTaskReq* tReq, int32_t reqType, const SDataBuf *pMsg, int32_t rspCode) {
   int32_t code = 0;
+  SCtgTask* pTask = tReq->pTask;
 
   CTG_ERR_JRET(ctgProcessRspMsg(&pTask->msgCtx.out, reqType, pMsg->pData, pMsg->len, rspCode, pTask->msgCtx.target));
 
@@ -1224,45 +1572,45 @@ _return:
   CTG_RET(code);
 }
 
-int32_t ctgAsyncRefreshTbMeta(SCtgTask *pTask) {
+int32_t ctgAsyncRefreshTbMeta(SCtgTaskReq *tReq, int32_t flag, SName* pName, int32_t* vgId) {
+  SCtgTask* pTask = tReq->pTask;
   SCatalog* pCtg = pTask->pJob->pCtg; 
   SRequestConnInfo* pConn = &pTask->pJob->conn;
   int32_t code = 0;
-  SCtgTbMetaCtx* ctx = (SCtgTbMetaCtx*)pTask->taskCtx;
 
-  if (CTG_FLAG_IS_SYS_DB(ctx->flag)) {
-    ctgDebug("will refresh sys db tbmeta, tbName:%s", tNameGetTableName(ctx->pName));
+  if (CTG_FLAG_IS_SYS_DB(flag)) {
+    ctgDebug("will refresh sys db tbmeta, tbName:%s", tNameGetTableName(pName));
 
-    CTG_RET(ctgGetTbMetaFromMnodeImpl(pCtg, pConn, (char *)ctx->pName->dbname, (char *)ctx->pName->tname, NULL, pTask));
+    CTG_RET(ctgGetTbMetaFromMnodeImpl(pCtg, pConn, (char *)pName->dbname, (char *)pName->tname, NULL, tReq));
   }
 
-  if (CTG_FLAG_IS_STB(ctx->flag)) {
-    ctgDebug("will refresh tbmeta, supposed to be stb, tbName:%s", tNameGetTableName(ctx->pName));
+  if (CTG_FLAG_IS_STB(flag)) {
+    ctgDebug("will refresh tbmeta, supposed to be stb, tbName:%s", tNameGetTableName(pName));
 
     // if get from mnode failed, will not try vnode
-    CTG_RET(ctgGetTbMetaFromMnode(pCtg, pConn, ctx->pName, NULL, pTask));
+    CTG_RET(ctgGetTbMetaFromMnode(pCtg, pConn, pName, NULL, tReq));
   }
 
   SCtgDBCache *dbCache = NULL;
   char dbFName[TSDB_DB_FNAME_LEN] = {0};
-  tNameGetFullDbName(ctx->pName, dbFName);
+  tNameGetFullDbName(pName, dbFName);
   
   CTG_ERR_RET(ctgAcquireVgInfoFromCache(pCtg, dbFName, &dbCache));
   if (dbCache) {
     SVgroupInfo vgInfo = {0};
-    CTG_ERR_JRET(ctgGetVgInfoFromHashValue(pCtg, dbCache->vgCache.vgInfo, ctx->pName, &vgInfo));
+    CTG_ERR_JRET(ctgGetVgInfoFromHashValue(pCtg, dbCache->vgCache.vgInfo, pName, &vgInfo));
 
-    ctgDebug("will refresh tbmeta, not supposed to be stb, tbName:%s, flag:%d", tNameGetTableName(ctx->pName), ctx->flag);
+    ctgDebug("will refresh tbmeta, not supposed to be stb, tbName:%s, flag:%d", tNameGetTableName(pName), flag);
 
-    ctx->vgId = vgInfo.vgId;
-    CTG_ERR_JRET(ctgGetTbMetaFromVnode(pCtg, pConn, ctx->pName, &vgInfo, NULL, pTask));
+    *vgId = vgInfo.vgId;
+    CTG_ERR_JRET(ctgGetTbMetaFromVnode(pCtg, pConn, pName, &vgInfo, NULL, tReq));
   } else {
     SBuildUseDBInput input = {0};
 
     tstrncpy(input.db, dbFName, tListLen(input.db));
     input.vgVersion = CTG_DEFAULT_INVALID_VERSION;
 
-    CTG_ERR_JRET(ctgGetDBVgInfoFromMnode(pCtg, pConn, &input, NULL, pTask));
+    CTG_ERR_JRET(ctgGetDBVgInfoFromMnode(pCtg, pConn, &input, NULL, tReq));
   }
 
 _return:
@@ -1284,7 +1632,50 @@ int32_t ctgLaunchGetTbMetaTask(SCtgTask *pTask) {
     return TSDB_CODE_SUCCESS;
   }
 
-  CTG_ERR_RET(ctgAsyncRefreshTbMeta(pTask));
+  SCtgTbMetaCtx* pCtx = (SCtgTbMetaCtx*)pTask->taskCtx;
+  SCtgTaskReq tReq;
+  tReq.pTask = pTask;
+  tReq.msgIdx = -1;    
+  CTG_ERR_RET(ctgAsyncRefreshTbMeta(&tReq, pCtx->flag, pCtx->pName, &pCtx->vgId));
+
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t ctgLaunchGetTbMetasTask(SCtgTask *pTask) {
+  SCatalog* pCtg = pTask->pJob->pCtg; 
+  SRequestConnInfo* pConn = &pTask->pJob->conn;
+  SCtgTbMetasCtx* pCtx = (SCtgTbMetasCtx*)pTask->taskCtx;
+
+  int32_t dbNum = taosArrayGetSize(pCtx->pNames);
+  int32_t fetchIdx = 0;
+  int32_t baseResIdx = 0;
+  for (int32_t i = 0; i < dbNum; ++i) {
+    STablesReq* pReq = taosArrayGet(pCtx->pNames, i);
+    ctgDebug("start to check tb metas in db %s, tbNum %d", pReq->dbFName, taosArrayGetSize(pReq->pTables));
+    CTG_ERR_RET(ctgGetTbMetasFromCache(pCtg, pConn, pCtx, i, &fetchIdx, baseResIdx, pReq->pTables));
+    baseResIdx += taosArrayGetSize(pReq->pTables);
+  }
+  
+  pCtx->fetchNum = taosArrayGetSize(pCtx->pFetchs);
+  if (pCtx->fetchNum <= 0) {
+    TSWAP(pTask->res, pCtx->pResList);
+    
+    CTG_ERR_RET(ctgHandleTaskEnd(pTask, 0));
+    return TSDB_CODE_SUCCESS;
+  }
+  
+  pTask->msgCtxs = taosArrayInit(pCtx->fetchNum, sizeof(SCtgMsgCtx));
+  taosArraySetSize(pTask->msgCtxs, pCtx->fetchNum);
+  
+  for (int32_t i = 0; i < pCtx->fetchNum; ++i) {
+    SCtgFetch* pFetch = taosArrayGet(pCtx->pFetchs, i);
+    SName* pName = ctgGetFetchName(pCtx->pNames, pFetch);
+
+    SCtgTaskReq tReq;
+    tReq.pTask = pTask;
+    tReq.msgIdx = pFetch->fetchIdx;    
+    CTG_ERR_RET(ctgAsyncRefreshTbMeta(&tReq, pFetch->flag, pName, &pFetch->vgId));
+  }
   
   return TSDB_CODE_SUCCESS;
 }
@@ -1310,7 +1701,10 @@ int32_t ctgLaunchGetDbVgTask(SCtgTask *pTask) {
     tstrncpy(input.db, pCtx->dbFName, tListLen(input.db));
     input.vgVersion = CTG_DEFAULT_INVALID_VERSION;
 
-    CTG_ERR_RET(ctgGetDBVgInfoFromMnode(pCtg, pConn, &input, NULL, pTask));
+    SCtgTaskReq tReq;
+    tReq.pTask = pTask;
+    tReq.msgIdx = -1;
+    CTG_ERR_RET(ctgGetDBVgInfoFromMnode(pCtg, pConn, &input, NULL, &tReq));
   }
 
 _return:
@@ -1347,7 +1741,10 @@ int32_t ctgLaunchGetTbHashTask(SCtgTask *pTask) {
     tstrncpy(input.db, pCtx->dbFName, tListLen(input.db));
     input.vgVersion = CTG_DEFAULT_INVALID_VERSION;
 
-    CTG_ERR_RET(ctgGetDBVgInfoFromMnode(pCtg, pConn, &input, NULL, pTask));
+    SCtgTaskReq tReq;
+    tReq.pTask = pTask;
+    tReq.msgIdx = -1;    
+    CTG_ERR_RET(ctgGetDBVgInfoFromMnode(pCtg, pConn, &input, NULL, &tReq));
   }
 
 _return:
@@ -1359,6 +1756,75 @@ _return:
   CTG_RET(code);
 }
 
+int32_t ctgLaunchGetTbHashsTask(SCtgTask *pTask) {
+  SCatalog* pCtg = pTask->pJob->pCtg; 
+  SRequestConnInfo* pConn = &pTask->pJob->conn;
+  SCtgTbHashsCtx* pCtx = (SCtgTbHashsCtx*)pTask->taskCtx;
+  SCtgDBCache *dbCache = NULL;
+  int32_t dbNum = taosArrayGetSize(pCtx->pNames);
+  int32_t fetchIdx = 0;
+  int32_t baseResIdx = 0;
+  int32_t code = 0;
+  
+  for (int32_t i = 0; i < dbNum; ++i) {
+    STablesReq* pReq = taosArrayGet(pCtx->pNames, i);
+
+    CTG_ERR_RET(ctgAcquireVgInfoFromCache(pCtg, pReq->dbFName, &dbCache));
+
+    if (NULL != dbCache) {
+      SCtgTaskReq tReq;
+      tReq.pTask = pTask;
+      tReq.msgIdx = -1;    
+      CTG_ERR_JRET(ctgGetVgInfosFromHashValue(pCtg, &tReq, dbCache->vgCache.vgInfo, pCtx, pReq->dbFName, pReq->pTables, false));
+
+      ctgReleaseVgInfoToCache(pCtg, dbCache);
+      dbCache = NULL;
+
+      baseResIdx += taosArrayGetSize(pReq->pTables);
+    } else {
+      ctgAddFetch(&pCtx->pFetchs, i, -1, &fetchIdx, baseResIdx, 0);
+
+      baseResIdx += taosArrayGetSize(pReq->pTables);
+      taosArraySetSize(pCtx->pResList, baseResIdx);      
+    }
+  }
+
+  pCtx->fetchNum = taosArrayGetSize(pCtx->pFetchs);
+  if (pCtx->fetchNum <= 0) {
+    TSWAP(pTask->res, pCtx->pResList);
+    
+    CTG_ERR_RET(ctgHandleTaskEnd(pTask, 0));
+    return TSDB_CODE_SUCCESS;
+  }
+  
+  pTask->msgCtxs = taosArrayInit(pCtx->fetchNum, sizeof(SCtgMsgCtx));
+  taosArraySetSize(pTask->msgCtxs, pCtx->fetchNum);
+  
+  for (int32_t i = 0; i < pCtx->fetchNum; ++i) {
+    SCtgFetch* pFetch = taosArrayGet(pCtx->pFetchs, i);
+    STablesReq* pReq = taosArrayGet(pCtx->pNames, pFetch->dbIdx);
+
+    SBuildUseDBInput input = {0};
+    strcpy(input.db, pReq->dbFName);
+    
+    input.vgVersion = CTG_DEFAULT_INVALID_VERSION;
+
+    SCtgTaskReq tReq;
+    tReq.pTask = pTask;
+    tReq.msgIdx = pFetch->fetchIdx;
+    CTG_ERR_RET(ctgGetDBVgInfoFromMnode(pCtg, pConn, &input, NULL, &tReq));
+  }
+
+_return:
+
+  if (dbCache) {
+    ctgReleaseVgInfoToCache(pCtg, dbCache);
+  }
+  
+  return code;
+}
+
+
 int32_t ctgLaunchGetTbIndexTask(SCtgTask *pTask) {
   int32_t code = 0;
   SCatalog* pCtg = pTask->pJob->pCtg; 
@@ -1610,6 +2076,8 @@ SCtgAsyncFps gCtgAsyncFps[] = {
   {ctgInitGetUdfTask,      ctgLaunchGetUdfTask,      ctgHandleGetUdfRsp,     ctgDumpUdfRes,     NULL,               NULL},
   {ctgInitGetUserTask,     ctgLaunchGetUserTask,     ctgHandleGetUserRsp,    ctgDumpUserRes,    NULL,               NULL},
   {ctgInitGetSvrVerTask,   ctgLaunchGetSvrVerTask,   ctgHandleGetSvrVerRsp,  ctgDumpSvrVer,     NULL,               NULL},
+  {ctgInitGetTbMetasTask,  ctgLaunchGetTbMetasTask,  ctgHandleGetTbMetasRsp, ctgDumpTbMetasRes, NULL,               NULL},
+  {ctgInitGetTbHashsTask,  ctgLaunchGetTbHashsTask,  ctgHandleGetTbHashsRsp, ctgDumpTbHashsRes, NULL,               NULL},
 };
 
 int32_t ctgMakeAsyncRes(SCtgJob *pJob) {

source/libs/catalog/src/ctgCache.c

@@ -242,7 +242,6 @@ int32_t ctgAcquireTbMetaFromCache(SCatalog* pCtg, char *dbFName, char* tbName, S
     goto _return;
   }
   
-  int32_t sz = 0;
   pCache = taosHashAcquire(dbCache->tbCache, tbName, strlen(tbName));
   if (NULL == pCache) {
     ctgDebug("tb %s not in cache, dbFName:%s", tbName, dbFName);
@@ -282,7 +281,6 @@ int32_t ctgAcquireStbMetaFromCache(SCatalog* pCtg, char *dbFName, uint64_t suid,
     goto _return;
   }
   
-  int32_t sz = 0;
   char* stName = taosHashAcquire(dbCache->stbCache, &suid, sizeof(suid));
   if (NULL == stName) {
     ctgDebug("stb 0x%" PRIx64 " not in cache, dbFName:%s", suid, dbFName);
@@ -2152,6 +2150,254 @@ int32_t ctgGetTbMetaFromCache(SCatalog* pCtg, SRequestConnInfo *pConn, SCtgTbMet
   return TSDB_CODE_SUCCESS;
 }
 
+#if 0
+int32_t ctgGetTbMetaBFromCache(SCatalog* pCtg, SRequestConnInfo *pConn, SCtgTbMetasCtx* ctx, SArray** pResList) {
+  int32_t tbNum = taosArrayGetSize(ctx->pNames);
+  SName* fName = taosArrayGet(ctx->pNames, 0);
+  int32_t fIdx = 0;
+  
+  for (int32_t i = 0; i < tbNum; ++i) {
+    SName* pName = taosArrayGet(ctx->pNames, i);
+    SCtgTbMetaCtx nctx = {0};
+    nctx.flag = CTG_FLAG_UNKNOWN_STB;
+    nctx.pName = pName;
+    
+    if (IS_SYS_DBNAME(pName->dbname)) {
+      CTG_FLAG_SET_SYS_DB(nctx.flag);
+    }
+
+    STableMeta *pTableMeta = NULL;
+    CTG_ERR_RET(ctgReadTbMetaFromCache(pCtg, &nctx, &pTableMeta));
+    SMetaRes res = {0};
+    
+    if (pTableMeta) {
+      if (CTG_FLAG_MATCH_STB(nctx.flag, pTableMeta->tableType) &&
+          ((!CTG_FLAG_IS_FORCE_UPDATE(nctx.flag)) || (CTG_FLAG_IS_SYS_DB(nctx.flag)))) {
+        res.pRes = pTableMeta;
+      } else {
+        taosMemoryFreeClear(pTableMeta);
+      }
+    }
+
+    if (NULL == res.pRes) {
+      if (NULL == ctx->pFetchs) {
+        ctx->pFetchs = taosArrayInit(tbNum, sizeof(SCtgFetch));
+      }
+      
+      if (CTG_FLAG_IS_UNKNOWN_STB(nctx.flag)) {
+        CTG_FLAG_SET_STB(nctx.flag, nctx.tbInfo.tbType);
+      }
+
+      SCtgFetch fetch = {0};
+      fetch.tbIdx = i;
+      fetch.fetchIdx = fIdx++;
+      fetch.flag = nctx.flag;
+
+      taosArrayPush(ctx->pFetchs, &fetch);
+    }
+    
+    taosArrayPush(ctx->pResList, &res);
+  }
+
+  if (NULL == ctx->pFetchs) {
+    TSWAP(*pResList, ctx->pResList);
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+#endif
+
+int32_t ctgGetTbMetasFromCache(SCatalog* pCtg, SRequestConnInfo *pConn, SCtgTbMetasCtx* ctx, int32_t dbIdx, int32_t *fetchIdx, int32_t baseResIdx, SArray* pList) {
+  int32_t tbNum = taosArrayGetSize(pList);
+  SName* pName = taosArrayGet(pList, 0);
+  char dbFName[TSDB_DB_FNAME_LEN] = {0};
+  int32_t flag = CTG_FLAG_UNKNOWN_STB;
+  uint64_t lastSuid = 0;
+  STableMeta* lastTableMeta = NULL;
+  
+  if (IS_SYS_DBNAME(pName->dbname)) {
+    CTG_FLAG_SET_SYS_DB(flag);
+    strcpy(dbFName, pName->dbname);
+  } else {
+    tNameGetFullDbName(pName, dbFName);
+  }
+
+  SCtgDBCache *dbCache = NULL;
+  SCtgTbCache* pCache = NULL;
+  ctgAcquireDBCache(pCtg, dbFName, &dbCache);
+  
+  if (NULL == dbCache) {
+    ctgDebug("db %s not in cache", dbFName);
+    for (int32_t i = 0; i < tbNum; ++i) {
+      ctgAddFetch(&ctx->pFetchs, dbIdx, i, fetchIdx, baseResIdx + i, flag);
+      taosArraySetSize(ctx->pResList, taosArrayGetSize(ctx->pResList) + 1);
+    }
+
+    return TSDB_CODE_SUCCESS;
+  }
+
+  for (int32_t i = 0; i < tbNum; ++i) {
+    SName* pName = taosArrayGet(pList, i);
+
+    pCache = taosHashAcquire(dbCache->tbCache, pName->tname, strlen(pName->tname));
+    if (NULL == pCache) {
+      ctgDebug("tb %s not in cache, dbFName:%s", pName->tname, dbFName);
+      ctgAddFetch(&ctx->pFetchs, dbIdx, i, fetchIdx, baseResIdx + i, flag);
+      taosArraySetSize(ctx->pResList, taosArrayGetSize(ctx->pResList) + 1);
+      
+      continue;
+    }
+
+    CTG_LOCK(CTG_READ, &pCache->metaLock);
+    if (NULL == pCache->pMeta) {
+      ctgDebug("tb %s meta not in cache, dbFName:%s", pName->tname, dbFName);
+      ctgAddFetch(&ctx->pFetchs, dbIdx, i, fetchIdx, baseResIdx + i, flag);
+      taosArraySetSize(ctx->pResList, taosArrayGetSize(ctx->pResList) + 1);
+      
+      continue;
+    }
+
+    STableMeta* tbMeta = pCache->pMeta;
+
+    SCtgTbMetaCtx nctx = {0};
+    nctx.flag = flag;
+    nctx.tbInfo.inCache = true;
+    nctx.tbInfo.dbId = dbCache->dbId;
+    nctx.tbInfo.suid = tbMeta->suid;
+    nctx.tbInfo.tbType = tbMeta->tableType;
+
+    SMetaRes res = {0};
+    STableMeta* pTableMeta = NULL;
+    if (tbMeta->tableType != TSDB_CHILD_TABLE) {
+      int32_t metaSize = CTG_META_SIZE(tbMeta);
+      pTableMeta = taosMemoryCalloc(1, metaSize);
+      if (NULL == pTableMeta) {
+        ctgReleaseTbMetaToCache(pCtg, dbCache, pCache);
+        CTG_ERR_RET(TSDB_CODE_OUT_OF_MEMORY);
+      }
+    
+      memcpy(pTableMeta, tbMeta, metaSize);
+      
+      CTG_UNLOCK(CTG_READ, &pCache->metaLock);
+      taosHashRelease(dbCache->tbCache, pCache); 
+      
+      ctgDebug("Got tb %s meta from cache, type:%d, dbFName:%s", pName->tname, tbMeta->tableType, dbFName);
+      
+      res.pRes = pTableMeta;
+      taosArrayPush(ctx->pResList, &res);
+
+      continue;
+    }
+    
+    // PROCESS FOR CHILD TABLE
+
+    if (lastSuid && tbMeta->suid == lastSuid && lastTableMeta) {
+      cloneTableMeta(lastTableMeta, &pTableMeta);
+      memcpy(pTableMeta, tbMeta, sizeof(SCTableMeta));
+
+      CTG_UNLOCK(CTG_READ, &pCache->metaLock);
+      taosHashRelease(dbCache->tbCache, pCache); 
+      
+      ctgDebug("Got tb %s meta from cache, type:%d, dbFName:%s", pName->tname, tbMeta->tableType, dbFName);
+      
+      res.pRes = pTableMeta;
+      taosArrayPush(ctx->pResList, &res);
+      
+      continue;
+    }
+    
+    int32_t metaSize = sizeof(SCTableMeta);
+    pTableMeta = taosMemoryCalloc(1, metaSize);
+    if (NULL == pTableMeta) {
+      ctgReleaseTbMetaToCache(pCtg, dbCache, pCache);    
+      CTG_ERR_RET(TSDB_CODE_OUT_OF_MEMORY);
+    }
+    
+    memcpy(pTableMeta, tbMeta, metaSize);
+    
+    CTG_UNLOCK(CTG_READ, &pCache->metaLock);
+    taosHashRelease(dbCache->tbCache, pCache); 
+    
+    ctgDebug("Got ctb %s meta from cache, will continue to get its stb meta, type:%d, dbFName:%s", 
+             pName->tname, nctx.tbInfo.tbType, dbFName);
+    
+    char* stName = taosHashAcquire(dbCache->stbCache, &pTableMeta->suid, sizeof(pTableMeta->suid));
+    if (NULL == stName) {
+      ctgDebug("stb 0x%" PRIx64 " not in cache, dbFName:%s", pTableMeta->suid, dbFName);
+      ctgAddFetch(&ctx->pFetchs, dbIdx, i, fetchIdx, baseResIdx + i, flag);
+      taosArraySetSize(ctx->pResList, taosArrayGetSize(ctx->pResList) + 1);
+
+      taosMemoryFreeClear(pTableMeta);
+      continue;
+    }
+
+    pCache = taosHashAcquire(dbCache->tbCache, stName, strlen(stName));
+    if (NULL == pCache) {
+      ctgDebug("stb 0x%" PRIx64 " name %s not in cache, dbFName:%s", pTableMeta->suid, stName, dbFName);
+      taosHashRelease(dbCache->stbCache, stName);
+      
+      ctgAddFetch(&ctx->pFetchs, dbIdx, i, fetchIdx, baseResIdx + i, flag);
+      taosArraySetSize(ctx->pResList, taosArrayGetSize(ctx->pResList) + 1);
+
+      taosMemoryFreeClear(pTableMeta);      
+      continue;
+    }
+
+    taosHashRelease(dbCache->stbCache, stName);
+
+    CTG_LOCK(CTG_READ, &pCache->metaLock);
+    if (NULL == pCache->pMeta) {
+      ctgDebug("stb 0x%" PRIx64 " meta not in cache, dbFName:%s", pTableMeta->suid, dbFName);
+      CTG_UNLOCK(CTG_READ, &pCache->metaLock);
+      taosHashRelease(dbCache->tbCache, pCache); 
+      
+      ctgAddFetch(&ctx->pFetchs, dbIdx, i, fetchIdx, baseResIdx + i, flag);
+      taosArraySetSize(ctx->pResList, taosArrayGetSize(ctx->pResList) + 1);
+
+      taosMemoryFreeClear(pTableMeta);
+
+      continue;
+    }
+    
+    STableMeta* stbMeta = pCache->pMeta;
+    if (stbMeta->suid != nctx.tbInfo.suid) {    
+      CTG_UNLOCK(CTG_READ, &pCache->metaLock);
+      taosHashRelease(dbCache->tbCache, pCache); 
+      
+      ctgError("stb suid 0x%" PRIx64 " in stbCache mis-match, expected suid 0x%"PRIx64 , stbMeta->suid, nctx.tbInfo.suid);
+      
+      ctgAddFetch(&ctx->pFetchs, dbIdx, i, fetchIdx, baseResIdx + i, flag);
+      taosArraySetSize(ctx->pResList, taosArrayGetSize(ctx->pResList) + 1);
+
+      taosMemoryFreeClear(pTableMeta);
+
+      continue;
+    }
+    
+    metaSize = CTG_META_SIZE(stbMeta);
+    pTableMeta = taosMemoryRealloc(pTableMeta, metaSize);
+    if (NULL == pTableMeta) {    
+      ctgReleaseTbMetaToCache(pCtg, dbCache, pCache);
+      CTG_ERR_RET(TSDB_CODE_OUT_OF_MEMORY);
+    }
+    
+    memcpy(&pTableMeta->sversion, &stbMeta->sversion, metaSize - sizeof(SCTableMeta));
+    
+    CTG_UNLOCK(CTG_READ, &pCache->metaLock);
+    taosHashRelease(dbCache->tbCache, pCache); 
+    
+    res.pRes = pTableMeta;
+    taosArrayPush(ctx->pResList, &res);
+
+    lastSuid = pTableMeta->suid;
+    lastTableMeta = pTableMeta;
+  }
+
+  ctgReleaseDBCache(pCtg, dbCache);
+  
+  return TSDB_CODE_SUCCESS;
+}
+
 
 int32_t ctgRemoveTbMetaFromCache(SCatalog* pCtg, SName* pTableName, bool syncReq) {
   int32_t       code = 0;

source/libs/catalog/src/ctgRemote.c

@@ -22,9 +22,8 @@
 
 int32_t ctgHandleBatchRsp(SCtgJob* pJob, SCtgTaskCallbackParam* cbParam, SDataBuf* pMsg, int32_t rspCode) {
   int32_t   code = 0;
-  SArray*   pTaskId = cbParam->taskId;
   SCatalog* pCtg = pJob->pCtg;
-  int32_t   taskNum = taosArrayGetSize(pTaskId);
+  int32_t   taskNum = taosArrayGetSize(cbParam->taskId);
   SDataBuf  taskMsg = *pMsg;
   int32_t   offset = 0;
   int32_t msgNum = (TSDB_CODE_SUCCESS == rspCode && pMsg->pData && (pMsg->len > 0)) ? ntohl(*(int32_t*)pMsg->pData) : 0;
@@ -42,11 +41,14 @@ int32_t ctgHandleBatchRsp(SCtgJob* pJob, SCtgTaskCallbackParam* cbParam, SDataBu
   }
 
   for (int32_t i = 0; i < taskNum; ++i) {
-    int32_t*  taskId = taosArrayGet(pTaskId, i);
+    int32_t*  taskId = taosArrayGet(cbParam->taskId, i);
+    int32_t*  msgIdx = taosArrayGet(cbParam->msgIdx, i);
     SCtgTask* pTask = taosArrayGet(pJob->pTasks, *taskId);
     if (msgNum > 0) {
       rsp.reqType = ntohl(*(int32_t*)((char*)pMsg->pData + offset));
       offset += sizeof(rsp.reqType);
+      rsp.msgIdx = ntohl(*(int32_t*)((char*)pMsg->pData + offset));
+      offset += sizeof(rsp.msgIdx);
       rsp.msgLen = ntohl(*(int32_t*)((char*)pMsg->pData + offset));
       offset += sizeof(rsp.msgLen);
       rsp.rspCode = ntohl(*(int32_t*)((char*)pMsg->pData + offset));
@@ -57,7 +59,10 @@ int32_t ctgHandleBatchRsp(SCtgJob* pJob, SCtgTaskCallbackParam* cbParam, SDataBu
       taskMsg.msgType = rsp.reqType;
       taskMsg.pData = rsp.msg;
       taskMsg.len = rsp.msgLen;
+
+      ASSERT(rsp.msgIdx == *msgIdx);
     } else {
+      rsp.msgIdx = *msgIdx;
       rsp.reqType = -1;
       taskMsg.msgType = -1;
       taskMsg.pData = NULL;
@@ -66,10 +71,13 @@ int32_t ctgHandleBatchRsp(SCtgJob* pJob, SCtgTaskCallbackParam* cbParam, SDataBu
 
     pTask->pBatchs = pBatchs;
     
-    ctgDebug("QID:0x%" PRIx64 " ctg task %d start to handle rsp %s", pJob->queryId, pTask->taskId,
-             TMSG_INFO(taskMsg.msgType + 1));
+    SCtgTaskReq tReq;
+    tReq.pTask = pTask;
+    tReq.msgIdx = rsp.msgIdx;    
+
+    ctgDebug("QID:0x%" PRIx64 " ctg task %d idx %d start to handle rsp %s", pJob->queryId, pTask->taskId, rsp.msgIdx, TMSG_INFO(taskMsg.msgType + 1));
 
-    (*gCtgAsyncFps[pTask->type].handleRspFp)(pTask, rsp.reqType, &taskMsg, (rsp.rspCode ? rsp.rspCode : rspCode));
+    (*gCtgAsyncFps[pTask->type].handleRspFp)(&tReq, rsp.reqType, &taskMsg, (rsp.rspCode ? rsp.rspCode : rspCode));
   }
 
   CTG_ERR_JRET(ctgLaunchBatchs(pJob->pCtg, pJob, pBatchs));
@@ -338,7 +346,10 @@ int32_t ctgHandleMsgCallback(void* param, SDataBuf* pMsg, int32_t rspCode) {
     pTask->pBatchs = pBatchs;
 #endif
 
-    CTG_ERR_JRET((*gCtgAsyncFps[pTask->type].handleRspFp)(pTask, cbParam->reqType, pMsg, rspCode));
+    SCtgTaskReq tReq;
+    tReq.pTask = pTask;
+    tReq.msgIdx = -1;
+    CTG_ERR_JRET((*gCtgAsyncFps[pTask->type].handleRspFp)(&tReq, cbParam->reqType, pMsg, rspCode));
 
 #if CTG_BATCH_FETCH
     CTG_ERR_JRET(ctgLaunchBatchs(pJob->pCtg, pJob, pBatchs));
@@ -356,7 +367,7 @@ _return:
   CTG_API_LEAVE(code);
 }
 
-int32_t ctgMakeMsgSendInfo(SCtgJob* pJob, SArray* pTaskId, int32_t batchId, int32_t msgType,
+int32_t ctgMakeMsgSendInfo(SCtgJob* pJob, SArray* pTaskId, int32_t batchId, SArray* pMsgIdx, int32_t msgType,
                            SMsgSendInfo** pMsgSendInfo) {
   int32_t       code = 0;
   SMsgSendInfo* msgSendInfo = taosMemoryCalloc(1, sizeof(SMsgSendInfo));
@@ -376,6 +387,7 @@ int32_t ctgMakeMsgSendInfo(SCtgJob* pJob, SArray* pTaskId, int32_t batchId, int3
   param->refId = pJob->refId;
   param->taskId = pTaskId;
   param->batchId = batchId;
+  param->msgIdx = pMsgIdx;
 
   msgSendInfo->param = param;
   msgSendInfo->paramFreeFp = ctgFreeMsgSendParam;
@@ -394,10 +406,10 @@ _return:
 }
 
 int32_t ctgAsyncSendMsg(SCatalog* pCtg, SRequestConnInfo* pConn, SCtgJob* pJob, SArray* pTaskId, int32_t batchId,
-                        char* dbFName, int32_t vgId, int32_t msgType, void* msg, uint32_t msgSize) {
+                        SArray* pMsgIdx, char* dbFName, int32_t vgId, int32_t msgType, void* msg, uint32_t msgSize) {
   int32_t       code = 0;
   SMsgSendInfo* pMsgSendInfo = NULL;
-  CTG_ERR_JRET(ctgMakeMsgSendInfo(pJob, pTaskId, batchId, msgType, &pMsgSendInfo));
+  CTG_ERR_JRET(ctgMakeMsgSendInfo(pJob, pTaskId, batchId, pMsgIdx, msgType, &pMsgSendInfo));
 
   ctgUpdateSendTargetInfo(pMsgSendInfo, msgType, dbFName, vgId);
 
@@ -428,25 +440,27 @@ _return:
   CTG_RET(code);
 }
 
-int32_t ctgAddBatch(SCatalog* pCtg, int32_t vgId, SRequestConnInfo* pConn, SCtgTask* pTask, int32_t msgType, void* msg,
+int32_t ctgAddBatch(SCatalog* pCtg, int32_t vgId, SRequestConnInfo* pConn, SCtgTaskReq* tReq, int32_t msgType, void* msg,
                     uint32_t msgSize) {
   int32_t    code = 0;
+  SCtgTask*  pTask = tReq->pTask;
   SHashObj*  pBatchs = pTask->pBatchs;
   SCtgJob*   pJob = pTask->pJob;
   SCtgBatch* pBatch = taosHashGet(pBatchs, &vgId, sizeof(vgId));
-  int32_t    taskNum = taosArrayGetSize(pTask->pJob->pTasks);
   SCtgBatch newBatch = {0};
   SBatchMsg req = {0};
   
   if (NULL == pBatch) {
-    newBatch.pMsgs = taosArrayInit(taskNum, sizeof(SBatchMsg));
-    newBatch.pTaskIds = taosArrayInit(taskNum, sizeof(int32_t));
-    if (NULL == newBatch.pMsgs || NULL == newBatch.pTaskIds) {
+    newBatch.pMsgs = taosArrayInit(pJob->subTaskNum, sizeof(SBatchMsg));
+    newBatch.pTaskIds = taosArrayInit(pJob->subTaskNum, sizeof(int32_t));
+    newBatch.pMsgIdxs = taosArrayInit(pJob->subTaskNum, sizeof(int32_t));
+    if (NULL == newBatch.pMsgs || NULL == newBatch.pTaskIds || NULL == newBatch.pMsgIdxs) {
       CTG_ERR_JRET(TSDB_CODE_OUT_OF_MEMORY);
     }
 
     newBatch.conn = *pConn;
 
+    req.msgIdx = tReq->msgIdx;
     req.msgType = msgType;
     req.msgLen = msgSize;
     req.msg = msg;
@@ -456,19 +470,31 @@ int32_t ctgAddBatch(SCatalog* pCtg, int32_t vgId, SRequestConnInfo* pConn, SCtgT
     if (NULL == taosArrayPush(newBatch.pTaskIds, &pTask->taskId)) {
       CTG_ERR_JRET(TSDB_CODE_OUT_OF_MEMORY);
     }
+    if (NULL == taosArrayPush(newBatch.pMsgIdxs, &req.msgIdx)) {
+      CTG_ERR_JRET(TSDB_CODE_OUT_OF_MEMORY);
+    }
     newBatch.msgSize = sizeof(SBatchReq) + sizeof(req) + msgSize - POINTER_BYTES;
 
     if (vgId > 0) {
+      SName* pName = NULL;
       if (TDMT_VND_TABLE_CFG == msgType) {
         SCtgTbCfgCtx* ctx = (SCtgTbCfgCtx*)pTask->taskCtx;
-        tNameGetFullDbName(ctx->pName, newBatch.dbFName);
+        pName = ctx->pName;
       } else if (TDMT_VND_TABLE_META == msgType) {
+        if (CTG_TASK_GET_TB_META_BATCH == pTask->type) {
+          SCtgTbMetasCtx* ctx = (SCtgTbMetasCtx*)pTask->taskCtx;
+          SCtgFetch* fetch = taosArrayGet(ctx->pFetchs, tReq->msgIdx);
+          pName = ctgGetFetchName(ctx->pNames, fetch);
+        } else {
           SCtgTbMetaCtx* ctx = (SCtgTbMetaCtx*)pTask->taskCtx;
-        tNameGetFullDbName(ctx->pName, newBatch.dbFName);
+          pName = ctx->pName;
+        }
       } else {
         ctgError("invalid vnode msgType %d", msgType);
         CTG_ERR_JRET(TSDB_CODE_APP_ERROR);
       }
+
+      tNameGetFullDbName(pName, newBatch.dbFName);
     }
 
     newBatch.msgType = (vgId > 0) ? TDMT_VND_BATCH_META : TDMT_MND_BATCH_META;
@@ -484,6 +510,7 @@ int32_t ctgAddBatch(SCatalog* pCtg, int32_t vgId, SRequestConnInfo* pConn, SCtgT
     return TSDB_CODE_SUCCESS;
   }
 
+  req.msgIdx = tReq->msgIdx;
   req.msgType = msgType;
   req.msgLen = msgSize;
   req.msg = msg;
@@ -493,19 +520,32 @@ int32_t ctgAddBatch(SCatalog* pCtg, int32_t vgId, SRequestConnInfo* pConn, SCtgT
   if (NULL == taosArrayPush(pBatch->pTaskIds, &pTask->taskId)) {
     CTG_ERR_JRET(TSDB_CODE_OUT_OF_MEMORY);
   }
+  if (NULL == taosArrayPush(pBatch->pMsgIdxs, &req.msgIdx)) {
+    CTG_ERR_JRET(TSDB_CODE_OUT_OF_MEMORY);
+  }
+  
   pBatch->msgSize += sizeof(req) + msgSize - POINTER_BYTES;
 
   if (vgId > 0) {
+    SName* pName = NULL;
     if (TDMT_VND_TABLE_CFG == msgType) {
       SCtgTbCfgCtx* ctx = (SCtgTbCfgCtx*)pTask->taskCtx;
-      tNameGetFullDbName(ctx->pName, newBatch.dbFName);
+      pName = ctx->pName;
     } else if (TDMT_VND_TABLE_META == msgType) {
+      if (CTG_TASK_GET_TB_META_BATCH == pTask->type) {
+        SCtgTbMetasCtx* ctx = (SCtgTbMetasCtx*)pTask->taskCtx;
+        SCtgFetch* fetch = taosArrayGet(ctx->pFetchs, tReq->msgIdx);
+        pName = ctgGetFetchName(ctx->pNames, fetch);
+      } else {
         SCtgTbMetaCtx* ctx = (SCtgTbMetaCtx*)pTask->taskCtx;
-      tNameGetFullDbName(ctx->pName, newBatch.dbFName);
+        pName = ctx->pName;
+      }
     } else {
       ctgError("invalid vnode msgType %d", msgType);
       CTG_ERR_JRET(TSDB_CODE_APP_ERROR);
     }
+
+    tNameGetFullDbName(pName, newBatch.dbFName);    
   }
 
   ctgDebug("task %d %s req added to batch %d, target vgId %d", pTask->taskId, TMSG_INFO(msgType), pBatch->batchId,
@@ -537,6 +577,8 @@ int32_t ctgBuildBatchReqMsg(SCtgBatch* pBatch, int32_t vgId, void** msg) {
 
   for (int32_t i = 0; i < num; ++i) {
     SBatchMsg* pReq = taosArrayGet(pBatch->pMsgs, i);
+    *(int32_t*)((char*)(*msg) + offset) = htonl(pReq->msgIdx);
+    offset += sizeof(pReq->msgIdx);    
     *(int32_t*)((char*)(*msg) + offset) = htonl(pReq->msgType);
     offset += sizeof(pReq->msgType);
     *(int32_t*)((char*)(*msg) + offset) = htonl(pReq->msgLen);
@@ -564,8 +606,8 @@ int32_t ctgLaunchBatchs(SCatalog* pCtg, SCtgJob* pJob, SHashObj* pBatchs) {
     ctgDebug("QID:0x%" PRIx64 " ctg start to launch batch %d", pJob->queryId, pBatch->batchId);
 
     CTG_ERR_JRET(ctgBuildBatchReqMsg(pBatch, *vgId, &msg));
-    code = ctgAsyncSendMsg(pCtg, &pBatch->conn, pJob, pBatch->pTaskIds, pBatch->batchId, pBatch->dbFName, *vgId,
-                           pBatch->msgType, msg, pBatch->msgSize);
+    code = ctgAsyncSendMsg(pCtg, &pBatch->conn, pJob, pBatch->pTaskIds, pBatch->batchId, pBatch->pMsgIdxs, 
+                           pBatch->dbFName, *vgId, pBatch->msgType, msg, pBatch->msgSize);
     pBatch->pTaskIds = NULL;
     CTG_ERR_JRET(code);
 
@@ -603,10 +645,14 @@ int32_t ctgGetQnodeListFromMnode(SCatalog* pCtg, SRequestConnInfo* pConn, SArray
     if (NULL == pOut) {
       CTG_ERR_RET(TSDB_CODE_OUT_OF_MEMORY);
     }
-    CTG_ERR_RET(ctgUpdateMsgCtx(&pTask->msgCtx, reqType, pOut, NULL));
+
+    CTG_ERR_RET(ctgUpdateMsgCtx(CTG_GET_TASK_MSGCTX(pTask, -1), reqType, pOut, NULL));
 
 #if CTG_BATCH_FETCH
-    CTG_RET(ctgAddBatch(pCtg, 0, pConn, pTask, reqType, msg, msgLen));
+    SCtgTaskReq tReq;
+    tReq.pTask = pTask;
+    tReq.msgIdx = -1;    
+    CTG_RET(ctgAddBatch(pCtg, 0, pConn, &tReq, reqType, msg, msgLen));
 #else
     SArray* pTaskId = taosArrayInit(1, sizeof(int32_t));
     if (NULL == pTaskId) {
@@ -614,7 +660,7 @@ int32_t ctgGetQnodeListFromMnode(SCatalog* pCtg, SRequestConnInfo* pConn, SArray
     }
     taosArrayPush(pTaskId, &pTask->taskId);
 
-    CTG_RET(ctgAsyncSendMsg(pCtg, pConn, pTask->pJob, pTaskId, -1, NULL, 0, reqType, msg, msgLen));
+    CTG_RET(ctgAsyncSendMsg(pCtg, pConn, pTask->pJob, pTaskId, -1, NULL, NULL, 0, reqType, msg, msgLen));
 #endif
   }
 
@@ -649,10 +695,13 @@ int32_t ctgGetDnodeListFromMnode(SCatalog* pCtg, SRequestConnInfo* pConn, SArray
   }
 
   if (pTask) {
-    CTG_ERR_RET(ctgUpdateMsgCtx(&pTask->msgCtx, reqType, NULL, NULL));
+    CTG_ERR_RET(ctgUpdateMsgCtx(CTG_GET_TASK_MSGCTX(pTask, -1), reqType, NULL, NULL));
 
 #if CTG_BATCH_FETCH
-    CTG_RET(ctgAddBatch(pCtg, 0, pConn, pTask, reqType, msg, msgLen));
+    SCtgTaskReq tReq;
+    tReq.pTask = pTask;
+    tReq.msgIdx = -1;    
+    CTG_RET(ctgAddBatch(pCtg, 0, pConn, &tReq, reqType, msg, msgLen));
 #else
     SArray* pTaskId = taosArrayInit(1, sizeof(int32_t));
     if (NULL == pTaskId) {
@@ -660,7 +709,7 @@ int32_t ctgGetDnodeListFromMnode(SCatalog* pCtg, SRequestConnInfo* pConn, SArray
     }
     taosArrayPush(pTaskId, &pTask->taskId);
 
-    CTG_RET(ctgAsyncSendMsg(pCtg, pConn, pTask->pJob, pTaskId, -1, NULL, 0, reqType, msg, msgLen));
+    CTG_RET(ctgAsyncSendMsg(pCtg, pConn, pTask->pJob, pTaskId, -1, NULL, NULL, 0, reqType, msg, msgLen));
 #endif
   }
 
@@ -681,10 +730,11 @@ int32_t ctgGetDnodeListFromMnode(SCatalog* pCtg, SRequestConnInfo* pConn, SArray
 }
 
 int32_t ctgGetDBVgInfoFromMnode(SCatalog* pCtg, SRequestConnInfo* pConn, SBuildUseDBInput* input, SUseDbOutput* out,
-                                SCtgTask* pTask) {
+                                SCtgTaskReq* tReq) {
   char*   msg = NULL;
   int32_t msgLen = 0;
   int32_t reqType = TDMT_MND_USE_DB;
+  SCtgTask* pTask = tReq ? tReq->pTask : NULL;
   void* (*mallocFp)(int32_t) = pTask ? taosMemoryMalloc : rpcMallocCont;
 
   ctgDebug("try to get db vgInfo from mnode, dbFName:%s", input->db);
@@ -700,10 +750,11 @@ int32_t ctgGetDBVgInfoFromMnode(SCatalog* pCtg, SRequestConnInfo* pConn, SBuildU
     if (NULL == pOut) {
       CTG_ERR_RET(TSDB_CODE_OUT_OF_MEMORY);
     }
-    CTG_ERR_RET(ctgUpdateMsgCtx(&pTask->msgCtx, reqType, pOut, input->db));
+
+    CTG_ERR_RET(ctgUpdateMsgCtx(CTG_GET_TASK_MSGCTX(pTask, tReq->msgIdx), reqType, pOut, input->db));
 
 #if CTG_BATCH_FETCH
-    CTG_RET(ctgAddBatch(pCtg, 0, pConn, pTask, reqType, msg, msgLen));
+    CTG_RET(ctgAddBatch(pCtg, 0, pConn, tReq, reqType, msg, msgLen));
 #else
     SArray* pTaskId = taosArrayInit(1, sizeof(int32_t));
     if (NULL == pTaskId) {
@@ -711,7 +762,7 @@ int32_t ctgGetDBVgInfoFromMnode(SCatalog* pCtg, SRequestConnInfo* pConn, SBuildU
     }
     taosArrayPush(pTaskId, &pTask->taskId);
 
-    CTG_RET(ctgAsyncSendMsg(pCtg, pConn, pTask->pJob, pTaskId, -1, NULL, 0, reqType, msg, msgLen));
+    CTG_RET(ctgAsyncSendMsg(pCtg, pConn, pTask->pJob, pTaskId, -1, NULL, NULL, 0, reqType, msg, msgLen));
 #endif
   }
 
@@ -751,10 +802,14 @@ int32_t ctgGetDBCfgFromMnode(SCatalog* pCtg, SRequestConnInfo* pConn, const char
     if (NULL == pOut) {
       CTG_ERR_RET(TSDB_CODE_OUT_OF_MEMORY);
     }
-    CTG_ERR_RET(ctgUpdateMsgCtx(&pTask->msgCtx, reqType, pOut, (char*)dbFName));
+
+    CTG_ERR_RET(ctgUpdateMsgCtx(CTG_GET_TASK_MSGCTX(pTask, -1), reqType, pOut, (char*)dbFName));
 
 #if CTG_BATCH_FETCH
-    CTG_RET(ctgAddBatch(pCtg, 0, pConn, pTask, reqType, msg, msgLen));
+    SCtgTaskReq tReq;
+    tReq.pTask = pTask;
+    tReq.msgIdx = -1;    
+    CTG_RET(ctgAddBatch(pCtg, 0, pConn, &tReq, reqType, msg, msgLen));
 #else
     SArray* pTaskId = taosArrayInit(1, sizeof(int32_t));
     if (NULL == pTaskId) {
@@ -762,7 +817,7 @@ int32_t ctgGetDBCfgFromMnode(SCatalog* pCtg, SRequestConnInfo* pConn, const char
     }
     taosArrayPush(pTaskId, &pTask->taskId);
 
-    CTG_RET(ctgAsyncSendMsg(pCtg, pConn, pTask->pJob, pTaskId, -1, NULL, 0, reqType, msg, msgLen));
+    CTG_RET(ctgAsyncSendMsg(pCtg, pConn, pTask->pJob, pTaskId, -1, NULL, NULL, 0, reqType, msg, msgLen));
 #endif
   }
 
@@ -802,10 +857,14 @@ int32_t ctgGetIndexInfoFromMnode(SCatalog* pCtg, SRequestConnInfo* pConn, const
     if (NULL == pOut) {
       CTG_ERR_RET(TSDB_CODE_OUT_OF_MEMORY);
     }
-    CTG_ERR_RET(ctgUpdateMsgCtx(&pTask->msgCtx, reqType, pOut, (char*)indexName));
+
+    CTG_ERR_RET(ctgUpdateMsgCtx(CTG_GET_TASK_MSGCTX(pTask, -1), reqType, pOut, (char*)indexName));
 
 #if CTG_BATCH_FETCH
-    CTG_RET(ctgAddBatch(pCtg, 0, pConn, pTask, reqType, msg, msgLen));
+    SCtgTaskReq tReq;
+    tReq.pTask = pTask;
+    tReq.msgIdx = -1;    
+    CTG_RET(ctgAddBatch(pCtg, 0, pConn, &tReq, reqType, msg, msgLen));
 #else
     SArray* pTaskId = taosArrayInit(1, sizeof(int32_t));
     if (NULL == pTaskId) {
@@ -813,7 +872,7 @@ int32_t ctgGetIndexInfoFromMnode(SCatalog* pCtg, SRequestConnInfo* pConn, const
     }
     taosArrayPush(pTaskId, &pTask->taskId);
 
-    CTG_RET(ctgAsyncSendMsg(pCtg, pConn, pTask->pJob, pTaskId, -1, NULL, 0, reqType, msg, msgLen));
+    CTG_RET(ctgAsyncSendMsg(pCtg, pConn, pTask->pJob, pTaskId, -1, NULL, NULL, 0, reqType, msg, msgLen));
 #endif
   }
 
@@ -856,10 +915,13 @@ int32_t ctgGetTbIndexFromMnode(SCatalog* pCtg, SRequestConnInfo* pConn, SName* n
       CTG_ERR_RET(TSDB_CODE_OUT_OF_MEMORY);
     }
     
-    CTG_ERR_RET(ctgUpdateMsgCtx(&pTask->msgCtx, reqType, pOut, (char*)tbFName));
+    CTG_ERR_RET(ctgUpdateMsgCtx(CTG_GET_TASK_MSGCTX(pTask, -1), reqType, pOut, (char*)tbFName));
 
 #if CTG_BATCH_FETCH
-    CTG_RET(ctgAddBatch(pCtg, 0, pConn, pTask, reqType, msg, msgLen));
+    SCtgTaskReq tReq;
+    tReq.pTask = pTask;
+    tReq.msgIdx = -1;    
+    CTG_RET(ctgAddBatch(pCtg, 0, pConn, &tReq, reqType, msg, msgLen));
 #else
     SArray* pTaskId = taosArrayInit(1, sizeof(int32_t));
     if (NULL == pTaskId) {
@@ -867,7 +929,7 @@ int32_t ctgGetTbIndexFromMnode(SCatalog* pCtg, SRequestConnInfo* pConn, SName* n
     }
     taosArrayPush(pTaskId, &pTask->taskId);
 
-    CTG_RET(ctgAsyncSendMsg(pCtg, pConn, pTask->pJob, pTaskId, -1, NULL, 0, reqType, msg, msgLen));
+    CTG_RET(ctgAsyncSendMsg(pCtg, pConn, pTask->pJob, pTaskId, -1, NULL, NULL, 0, reqType, msg, msgLen));
 #endif
   }
 
@@ -907,10 +969,14 @@ int32_t ctgGetUdfInfoFromMnode(SCatalog* pCtg, SRequestConnInfo* pConn, const ch
     if (NULL == pOut) {
       CTG_ERR_RET(TSDB_CODE_OUT_OF_MEMORY);
     }
-    CTG_ERR_RET(ctgUpdateMsgCtx(&pTask->msgCtx, reqType, pOut, (char*)funcName));
+
+    CTG_ERR_RET(ctgUpdateMsgCtx(CTG_GET_TASK_MSGCTX(pTask, -1), reqType, pOut, (char*)funcName));
 
 #if CTG_BATCH_FETCH
-    CTG_RET(ctgAddBatch(pCtg, 0, pConn, pTask, reqType, msg, msgLen));
+    SCtgTaskReq tReq;
+    tReq.pTask = pTask;
+    tReq.msgIdx = -1;    
+    CTG_RET(ctgAddBatch(pCtg, 0, pConn, &tReq, reqType, msg, msgLen));
 #else
     SArray* pTaskId = taosArrayInit(1, sizeof(int32_t));
     if (NULL == pTaskId) {
@@ -918,7 +984,7 @@ int32_t ctgGetUdfInfoFromMnode(SCatalog* pCtg, SRequestConnInfo* pConn, const ch
     }
     taosArrayPush(pTaskId, &pTask->taskId);
 
-    CTG_RET(ctgAsyncSendMsg(pCtg, pConn, pTask->pJob, pTaskId, -1, NULL, 0, reqType, msg, msgLen));
+    CTG_RET(ctgAsyncSendMsg(pCtg, pConn, pTask->pJob, pTaskId, -1, NULL, NULL, 0, reqType, msg, msgLen));
 #endif
   }
 
@@ -958,10 +1024,14 @@ int32_t ctgGetUserDbAuthFromMnode(SCatalog* pCtg, SRequestConnInfo* pConn, const
     if (NULL == pOut) {
       CTG_ERR_RET(TSDB_CODE_OUT_OF_MEMORY);
     }
-    CTG_ERR_RET(ctgUpdateMsgCtx(&pTask->msgCtx, reqType, pOut, (char*)user));
+
+    CTG_ERR_RET(ctgUpdateMsgCtx(CTG_GET_TASK_MSGCTX(pTask, -1), reqType, pOut, (char*)user));
 
 #if CTG_BATCH_FETCH
-    CTG_RET(ctgAddBatch(pCtg, 0, pConn, pTask, reqType, msg, msgLen));
+    SCtgTaskReq tReq;
+    tReq.pTask = pTask;
+    tReq.msgIdx = -1;    
+    CTG_RET(ctgAddBatch(pCtg, 0, pConn, &tReq, reqType, msg, msgLen));
 #else
     SArray* pTaskId = taosArrayInit(1, sizeof(int32_t));
     if (NULL == pTaskId) {
@@ -969,7 +1039,7 @@ int32_t ctgGetUserDbAuthFromMnode(SCatalog* pCtg, SRequestConnInfo* pConn, const
     }
     taosArrayPush(pTaskId, &pTask->taskId);
 
-    CTG_RET(ctgAsyncSendMsg(pCtg, pConn, pTask->pJob, pTaskId, -1, NULL, 0, reqType, msg, msgLen));
+    CTG_RET(ctgAsyncSendMsg(pCtg, pConn, pTask->pJob, pTaskId, -1, NULL, NULL, 0, reqType, msg, msgLen));
 #endif
   }
 
@@ -990,7 +1060,8 @@ int32_t ctgGetUserDbAuthFromMnode(SCatalog* pCtg, SRequestConnInfo* pConn, const
 }
 
 int32_t ctgGetTbMetaFromMnodeImpl(SCatalog* pCtg, SRequestConnInfo* pConn, char* dbFName, char* tbName,
-                                  STableMetaOutput* out, SCtgTask* pTask) {
+                                  STableMetaOutput* out, SCtgTaskReq* tReq) {
+  SCtgTask *pTask = tReq ? tReq->pTask : NULL;                                  
   SBuildTableInput bInput = {.vgId = 0, .dbFName = dbFName, .tbName = tbName};
   char*            msg = NULL;
   SEpSet*          pVnodeEpSet = NULL;
@@ -1013,9 +1084,11 @@ int32_t ctgGetTbMetaFromMnodeImpl(SCatalog* pCtg, SRequestConnInfo* pConn, char*
     if (NULL == pOut) {
       CTG_ERR_RET(TSDB_CODE_OUT_OF_MEMORY);
     }
-    CTG_ERR_RET(ctgUpdateMsgCtx(&pTask->msgCtx, reqType, pOut, tbFName));
+
+    CTG_ERR_RET(ctgUpdateMsgCtx(CTG_GET_TASK_MSGCTX(pTask, tReq->msgIdx), reqType, pOut, tbFName));
+    
 #if CTG_BATCH_FETCH
-    CTG_RET(ctgAddBatch(pCtg, 0, pConn, pTask, reqType, msg, msgLen));
+    CTG_RET(ctgAddBatch(pCtg, 0, pConn, tReq, reqType, msg, msgLen));
 #else
     SArray* pTaskId = taosArrayInit(1, sizeof(int32_t));
     if (NULL == pTaskId) {
@@ -1023,7 +1096,7 @@ int32_t ctgGetTbMetaFromMnodeImpl(SCatalog* pCtg, SRequestConnInfo* pConn, char*
     }
     taosArrayPush(pTaskId, &pTask->taskId);
 
-    CTG_RET(ctgAsyncSendMsg(pCtg, pConn, pTask->pJob, pTaskId, -1, NULL, 0, reqType, msg, msgLen));
+    CTG_RET(ctgAsyncSendMsg(pCtg, pConn, pTask->pJob, pTaskId, -1, NULL, NULL, 0, reqType, msg, msgLen));
 #endif
   }
 
@@ -1044,15 +1117,16 @@ int32_t ctgGetTbMetaFromMnodeImpl(SCatalog* pCtg, SRequestConnInfo* pConn, char*
 }
 
 int32_t ctgGetTbMetaFromMnode(SCatalog* pCtg, SRequestConnInfo* pConn, const SName* pTableName, STableMetaOutput* out,
-                              SCtgTask* pTask) {
+                              SCtgTaskReq* tReq) {
   char dbFName[TSDB_DB_FNAME_LEN];
   tNameGetFullDbName(pTableName, dbFName);
 
-  return ctgGetTbMetaFromMnodeImpl(pCtg, pConn, dbFName, (char*)pTableName->tname, out, pTask);
+  return ctgGetTbMetaFromMnodeImpl(pCtg, pConn, dbFName, (char*)pTableName->tname, out, tReq);
 }
 
 int32_t ctgGetTbMetaFromVnode(SCatalog* pCtg, SRequestConnInfo* pConn, const SName* pTableName, SVgroupInfo* vgroupInfo,
-                              STableMetaOutput* out, SCtgTask* pTask) {
+                              STableMetaOutput* out, SCtgTaskReq* tReq) {
+  SCtgTask *pTask = tReq ? tReq->pTask : NULL;
   char dbFName[TSDB_DB_FNAME_LEN];
   tNameGetFullDbName(pTableName, dbFName);
   int32_t reqType = TDMT_VND_TABLE_META;
@@ -1080,15 +1154,16 @@ int32_t ctgGetTbMetaFromVnode(SCatalog* pCtg, SRequestConnInfo* pConn, const SNa
     if (NULL == pOut) {
       CTG_ERR_RET(TSDB_CODE_OUT_OF_MEMORY);
     }
-    CTG_ERR_RET(ctgUpdateMsgCtx(&pTask->msgCtx, reqType, pOut, tbFName));
 
     SRequestConnInfo vConn = {.pTrans = pConn->pTrans,
                               .requestId = pConn->requestId,
                               .requestObjRefId = pConn->requestObjRefId,
                               .mgmtEps = vgroupInfo->epSet};
 
+  CTG_ERR_RET(ctgUpdateMsgCtx(CTG_GET_TASK_MSGCTX(pTask, tReq->msgIdx), reqType, pOut, tbFName));
+
 #if CTG_BATCH_FETCH
-    CTG_RET(ctgAddBatch(pCtg, vgroupInfo->vgId, &vConn, pTask, reqType, msg, msgLen));
+    CTG_RET(ctgAddBatch(pCtg, vgroupInfo->vgId, &vConn, tReq, reqType, msg, msgLen));
 #else
     SCtgTbMetaCtx* ctx = (SCtgTbMetaCtx*)pTask->taskCtx;
     char           dbFName[TSDB_DB_FNAME_LEN];
@@ -1099,7 +1174,7 @@ int32_t ctgGetTbMetaFromVnode(SCatalog* pCtg, SRequestConnInfo* pConn, const SNa
     }
     taosArrayPush(pTaskId, &pTask->taskId);
 
-    CTG_RET(ctgAsyncSendMsg(pCtg, &vConn, pTask->pJob, pTaskId, -1, dbFName, ctx->vgId, reqType, msg, msgLen));
+    CTG_RET(ctgAsyncSendMsg(pCtg, &vConn, pTask->pJob, pTaskId, -1, NULL, dbFName, ctx->vgId, reqType, msg, msgLen));
 #endif
   }
 
@@ -1142,14 +1217,17 @@ int32_t ctgGetTableCfgFromVnode(SCatalog* pCtg, SRequestConnInfo* pConn, const S
   }
 
   if (pTask) {
-    CTG_ERR_RET(ctgUpdateMsgCtx(&pTask->msgCtx, reqType, NULL, (char*)tbFName));
+    CTG_ERR_RET(ctgUpdateMsgCtx(CTG_GET_TASK_MSGCTX(pTask, -1), reqType, NULL, (char*)tbFName));
 
     SRequestConnInfo vConn = {.pTrans = pConn->pTrans,
                               .requestId = pConn->requestId,
                               .requestObjRefId = pConn->requestObjRefId,
                               .mgmtEps = vgroupInfo->epSet};
 #if CTG_BATCH_FETCH
-    CTG_RET(ctgAddBatch(pCtg, vgroupInfo->vgId, &vConn, pTask, reqType, msg, msgLen));
+    SCtgTaskReq tReq;
+    tReq.pTask = pTask;
+    tReq.msgIdx = -1;    
+    CTG_RET(ctgAddBatch(pCtg, vgroupInfo->vgId, &vConn, &tReq, reqType, msg, msgLen));
 #else
     SCtgTbCfgCtx* ctx = (SCtgTbCfgCtx*)pTask->taskCtx;
     char          dbFName[TSDB_DB_FNAME_LEN];
@@ -1160,7 +1238,7 @@ int32_t ctgGetTableCfgFromVnode(SCatalog* pCtg, SRequestConnInfo* pConn, const S
     }
     taosArrayPush(pTaskId, &pTask->taskId);
 
-    CTG_RET(ctgAsyncSendMsg(pCtg, &vConn, pTask->pJob, pTaskId, -1, dbFName, ctx->pVgInfo->vgId, reqType, msg, msgLen));
+    CTG_RET(ctgAsyncSendMsg(pCtg, &vConn, pTask->pJob, pTaskId, -1, NULL, dbFName, ctx->pVgInfo->vgId, reqType, msg, msgLen));
 #endif
   }
 
@@ -1201,9 +1279,13 @@ int32_t ctgGetTableCfgFromMnode(SCatalog* pCtg, SRequestConnInfo* pConn, const S
   }
 
   if (pTask) {
-    CTG_ERR_RET(ctgUpdateMsgCtx(&pTask->msgCtx, reqType, NULL, (char*)tbFName));
+    CTG_ERR_RET(ctgUpdateMsgCtx(CTG_GET_TASK_MSGCTX(pTask, -1), reqType, NULL, (char*)tbFName));
+
 #if CTG_BATCH_FETCH
-    CTG_RET(ctgAddBatch(pCtg, 0, pConn, pTask, reqType, msg, msgLen));
+    SCtgTaskReq tReq;
+    tReq.pTask = pTask;
+    tReq.msgIdx = -1;    
+    CTG_RET(ctgAddBatch(pCtg, 0, pConn, &tReq, reqType, msg, msgLen));
 #else
     SArray* pTaskId = taosArrayInit(1, sizeof(int32_t));
     if (NULL == pTaskId) {
@@ -1211,7 +1293,7 @@ int32_t ctgGetTableCfgFromMnode(SCatalog* pCtg, SRequestConnInfo* pConn, const S
     }
     taosArrayPush(pTaskId, &pTask->taskId);
 
-    CTG_RET(ctgAsyncSendMsg(pCtg, pConn, pTask->pJob, pTaskId, -1, NULL, 0, reqType, msg, msgLen));
+    CTG_RET(ctgAsyncSendMsg(pCtg, pConn, pTask->pJob, pTaskId, -1, NULL, NULL, 0, reqType, msg, msgLen));
 #endif
   }
 
@@ -1246,10 +1328,13 @@ int32_t ctgGetSvrVerFromMnode(SCatalog* pCtg, SRequestConnInfo* pConn, char** ou
   }
 
   if (pTask) {
-    CTG_ERR_RET(ctgUpdateMsgCtx(&pTask->msgCtx, reqType, NULL, NULL));
+    CTG_ERR_RET(ctgUpdateMsgCtx(CTG_GET_TASK_MSGCTX(pTask, -1), reqType, NULL, NULL));
 
 #if CTG_BATCH_FETCH
-    CTG_RET(ctgAddBatch(pCtg, 0, pConn, pTask, reqType, msg, msgLen));
+    SCtgTaskReq tReq;
+    tReq.pTask = pTask;
+    tReq.msgIdx = -1;    
+    CTG_RET(ctgAddBatch(pCtg, 0, pConn, &tReq, reqType, msg, msgLen));
 #else
     SArray* pTaskId = taosArrayInit(1, sizeof(int32_t));
     if (NULL == pTaskId) {
@@ -1257,7 +1342,7 @@ int32_t ctgGetSvrVerFromMnode(SCatalog* pCtg, SRequestConnInfo* pConn, char** ou
     }
     taosArrayPush(pTaskId, &pTask->taskId);
 
-    CTG_RET(ctgAsyncSendMsg(pCtg, pConn, pTask->pJob, pTaskId, -1, NULL, 0, reqType, msg, msgLen));
+    CTG_RET(ctgAsyncSendMsg(pCtg, pConn, pTask->pJob, pTaskId, -1, NULL, NULL, 0, reqType, msg, msgLen));
 #endif
   }
 

source/libs/catalog/src/ctgUtil.c

@@ -26,6 +26,7 @@ void ctgFreeMsgSendParam(void* param) {
 
   SCtgTaskCallbackParam* pParam = (SCtgTaskCallbackParam*)param;
   taosArrayDestroy(pParam->taskId);
+  taosArrayDestroy(pParam->msgIdx);
 
   taosMemoryFree(param);
 }
@@ -88,6 +89,10 @@ char *ctgTaskTypeStr(CTG_TASK_TYPE type) {
       return "[get user]";
     case CTG_TASK_GET_SVR_VER:
       return "[get svr ver]";
+    case CTG_TASK_GET_TB_META_BATCH:
+      return "[bget table meta]";
+    case CTG_TASK_GET_TB_HASH_BATCH:
+      return "[bget table hash]";
     default:
       return "unknown";
   }
@@ -460,6 +465,25 @@ void ctgResetTbMetaTask(SCtgTask* pTask) {
   taosMemoryFreeClear(pTask->res);
 }
 
+void ctgFreeBatchMeta(void* meta) {
+  if (NULL == meta) {
+    return;
+  }
+  
+  SMetaRes* pRes = (SMetaRes*)meta;
+  taosMemoryFreeClear(pRes->pRes);
+}
+
+void ctgFreeBatchHash(void* hash) {
+  if (NULL == hash) {
+    return;
+  }
+  
+  SMetaRes* pRes = (SMetaRes*)hash;
+  taosMemoryFreeClear(pRes->pRes);
+}
+
+
 void ctgFreeTaskRes(CTG_TASK_TYPE type, void **pRes) {
   switch (type) {
     case CTG_TASK_GET_QNODE:
@@ -500,6 +524,24 @@ void ctgFreeTaskRes(CTG_TASK_TYPE type, void **pRes) {
       taosMemoryFreeClear(*pRes);
       break;
     }
+    case CTG_TASK_GET_TB_META_BATCH: {
+      SArray* pArray = (SArray*)*pRes;
+      int32_t num = taosArrayGetSize(pArray);
+      for (int32_t i = 0; i < num; ++i) {
+        ctgFreeBatchMeta(taosArrayGet(pArray, i));
+      }
+      *pRes = NULL; // no need to free it
+      break;
+    }
+    case CTG_TASK_GET_TB_HASH_BATCH: {
+      SArray* pArray = (SArray*)*pRes;
+      int32_t num = taosArrayGetSize(pArray);
+      for (int32_t i = 0; i < num; ++i) {
+        ctgFreeBatchHash(taosArrayGet(pArray, i));
+      }
+      *pRes = NULL; // no need to free it
+      break;
+    }    
     default:
       qError("invalid task type %d", type);
       break;
@@ -554,6 +596,16 @@ void ctgFreeSubTaskRes(CTG_TASK_TYPE type, void **pRes) {
       taosMemoryFreeClear(*pRes);
       break;
     }
+    case CTG_TASK_GET_TB_META_BATCH: {
+      taosArrayDestroyEx(*pRes, ctgFreeBatchMeta);
+      *pRes = NULL;
+      break;
+    }
+    case CTG_TASK_GET_TB_HASH_BATCH: {
+      taosArrayDestroyEx(*pRes, ctgFreeBatchHash);
+      *pRes = NULL;
+      break;
+    }
     default:
       qError("invalid task type %d", type);
       break;
@@ -583,12 +635,38 @@ void ctgFreeTaskCtx(SCtgTask* pTask) {
       taosMemoryFreeClear(pTask->taskCtx);
       break;
     }
+    case CTG_TASK_GET_TB_META_BATCH: {
+      SCtgTbMetasCtx* taskCtx = (SCtgTbMetasCtx*)pTask->taskCtx;
+      taosArrayDestroyEx(taskCtx->pResList, ctgFreeBatchMeta);
+      taosArrayDestroy(taskCtx->pFetchs);
+      // NO NEED TO FREE pNames
+
+      taosArrayDestroyEx(pTask->msgCtxs, (FDelete)ctgFreeMsgCtx);
+      
+      if (pTask->msgCtx.lastOut) {
+        ctgFreeSTableMetaOutput((STableMetaOutput*)pTask->msgCtx.lastOut);
+        pTask->msgCtx.lastOut = NULL;
+      }
+      taosMemoryFreeClear(pTask->taskCtx);
+      break;
+    }
     case CTG_TASK_GET_TB_HASH: {
       SCtgTbHashCtx* taskCtx = (SCtgTbHashCtx*)pTask->taskCtx;
       taosMemoryFreeClear(taskCtx->pName);
       taosMemoryFreeClear(pTask->taskCtx);      
       break;
     }
+    case CTG_TASK_GET_TB_HASH_BATCH: {
+      SCtgTbHashsCtx* taskCtx = (SCtgTbHashsCtx*)pTask->taskCtx;
+      taosArrayDestroyEx(taskCtx->pResList, ctgFreeBatchHash);
+      taosArrayDestroy(taskCtx->pFetchs);
+      // NO NEED TO FREE pNames
+
+      taosArrayDestroyEx(pTask->msgCtxs, (FDelete)ctgFreeMsgCtx);
+      
+      taosMemoryFreeClear(pTask->taskCtx);
+      break;
+    }    
     case CTG_TASK_GET_TB_INDEX: {
       SCtgTbIndexCtx* taskCtx = (SCtgTbIndexCtx*)pTask->taskCtx;
       taosMemoryFreeClear(taskCtx->pName);
@@ -679,6 +757,23 @@ int32_t ctgUpdateMsgCtx(SCtgMsgCtx* pCtx, int32_t reqType, void* out, char* targ
   return TSDB_CODE_SUCCESS;
 }
 
+int32_t ctgAddMsgCtx(SArray* pCtxs, int32_t reqType, void* out, char* target) {
+  SCtgMsgCtx ctx = {0};
+  
+  ctx.reqType = reqType;
+  ctx.out = out;
+  if (target) {
+    ctx.target = strdup(target);
+    if (NULL == ctx.target) {
+      CTG_ERR_RET(TSDB_CODE_OUT_OF_MEMORY);
+    }
+  }
+
+  taosArrayPush(pCtxs, &ctx);
+
+  return TSDB_CODE_SUCCESS;
+}
+
 
 int32_t ctgGetHashFunction(int8_t hashMethod, tableNameHashFp *fp) {
   switch (hashMethod) {
@@ -780,6 +875,104 @@ int32_t ctgGetVgInfoFromHashValue(SCatalog *pCtg, SDBVgInfo *dbInfo, const SName
   CTG_RET(code);
 }
 
+int32_t ctgGetVgInfosFromHashValue(SCatalog *pCtg, SCtgTaskReq* tReq, SDBVgInfo *dbInfo, SCtgTbHashsCtx *pCtx, char* dbFName, SArray* pNames, bool update) {
+  int32_t code = 0;
+  SCtgTask* pTask = tReq->pTask;
+  SMetaRes res = {0};
+  int32_t vgNum = taosHashGetSize(dbInfo->vgHash);
+  if (vgNum <= 0) {
+    ctgError("db vgroup cache invalid, db:%s, vgroup number:%d", dbFName, vgNum);
+    CTG_ERR_RET(TSDB_CODE_TSC_DB_NOT_SELECTED);
+  }
+
+  tableNameHashFp fp = NULL;
+  SVgroupInfo *vgInfo = NULL;
+
+  CTG_ERR_RET(ctgGetHashFunction(dbInfo->hashMethod, &fp));
+
+  int32_t tbNum = taosArrayGetSize(pNames);
+
+  if (1 == vgNum) {
+    void *pIter = taosHashIterate(dbInfo->vgHash, NULL);
+    for (int32_t i = 0; i < tbNum; ++i) {
+      vgInfo = taosMemoryMalloc(sizeof(SVgroupInfo));
+      if (NULL == vgInfo) {
+        CTG_ERR_RET(TSDB_CODE_OUT_OF_MEMORY);
+      }
+
+      *vgInfo = *(SVgroupInfo*)pIter;
+
+      ctgDebug("Got tb hash vgroup, vgId:%d, epNum %d, current %s port %d", vgInfo->vgId, vgInfo->epSet.numOfEps,
+        vgInfo->epSet.eps[vgInfo->epSet.inUse].fqdn, vgInfo->epSet.eps[vgInfo->epSet.inUse].port);
+
+      if (update) {
+        SCtgFetch* pFetch = taosArrayGet(pCtx->pFetchs, tReq->msgIdx);
+        SMetaRes *pRes = taosArrayGet(pCtx->pResList, pFetch->resIdx + i);
+        pRes->pRes = vgInfo;
+      } else {
+        res.pRes = vgInfo;
+        taosArrayPush(pCtx->pResList, &res);
+      }
+    }
+
+    return TSDB_CODE_SUCCESS;
+  }
+
+  char tbFullName[TSDB_TABLE_FNAME_LEN];
+  sprintf(tbFullName, "%s.", dbFName);
+  int32_t offset = strlen(tbFullName);
+  SName* pName = NULL;
+  int32_t tbNameLen = 0;
+  
+  for (int32_t i = 0; i < tbNum; ++i) {
+    pName = taosArrayGet(pNames, i);
+
+    tbNameLen = offset + strlen(pName->tname);
+    strcpy(tbFullName + offset, pName->tname);
+
+    uint32_t hashValue = (*fp)(tbFullName, (uint32_t)tbNameLen);
+
+    void *pIter = taosHashIterate(dbInfo->vgHash, NULL);
+    while (pIter) {
+      vgInfo = pIter;
+      if (hashValue >= vgInfo->hashBegin && hashValue <= vgInfo->hashEnd) {
+        taosHashCancelIterate(dbInfo->vgHash, pIter);
+        break;
+      }
+      
+      pIter = taosHashIterate(dbInfo->vgHash, pIter);
+      vgInfo = NULL;
+    }
+
+    if (NULL == vgInfo) {
+      ctgError("no hash range found for hash value [%u], db:%s, numOfVgId:%d", hashValue, dbFName, taosHashGetSize(dbInfo->vgHash));
+      CTG_ERR_RET(TSDB_CODE_CTG_INTERNAL_ERROR);
+    }
+
+    SVgroupInfo* pNewVg = taosMemoryMalloc(sizeof(SVgroupInfo));
+    if (NULL == pNewVg) {
+      CTG_ERR_RET(TSDB_CODE_OUT_OF_MEMORY);
+    }
+
+    *pNewVg = *vgInfo;
+
+    ctgDebug("Got tb %s hash vgroup, vgId:%d, epNum %d, current %s port %d", tbFullName, vgInfo->vgId, vgInfo->epSet.numOfEps,
+             vgInfo->epSet.eps[vgInfo->epSet.inUse].fqdn, vgInfo->epSet.eps[vgInfo->epSet.inUse].port);
+
+    if (update) {
+      SCtgFetch* pFetch = taosArrayGet(pCtx->pFetchs, tReq->msgIdx);
+      SMetaRes *pRes = taosArrayGet(pCtx->pResList, pFetch->resIdx + i);
+      pRes->pRes = pNewVg;
+    } else {
+      res.pRes = pNewVg;
+      taosArrayPush(pCtx->pResList, &res);
+    }    
+  }
+
+  CTG_RET(code);
+}
+
+
 int32_t ctgStbVersionSearchCompare(const void* key1, const void* key2) {
   if (*(uint64_t *)key1 < ((SSTableVersion*)key2)->suid) {
     return -1;
@@ -921,4 +1114,41 @@ int32_t ctgUpdateSendTargetInfo(SMsgSendInfo *pMsgSendInfo, int32_t msgType, cha
   return TSDB_CODE_SUCCESS;
 }
 
+int32_t ctgGetTablesReqNum(SArray *pList) {
+  if (NULL == pList) {
+    return 0;
+  }
+
+  int32_t total = 0;
+  int32_t n = taosArrayGetSize(pList);
+  for (int32_t i = 0; i < n; ++i) {
+    STablesReq *pReq = taosArrayGet(pList, i);
+    total += taosArrayGetSize(pReq->pTables);
+  }
+
+  return total;
+}
+
+int32_t ctgAddFetch(SArray** pFetchs, int32_t dbIdx, int32_t tbIdx, int32_t *fetchIdx, int32_t resIdx, int32_t flag) {
+  if (NULL == (*pFetchs)) {
+    *pFetchs = taosArrayInit(CTG_DEFAULT_FETCH_NUM, sizeof(SCtgFetch));
+  }
+  
+  SCtgFetch fetch = {0};
+  fetch.dbIdx = dbIdx;
+  fetch.tbIdx = tbIdx;
+  fetch.fetchIdx = (*fetchIdx)++;
+  fetch.resIdx = resIdx;
+  fetch.flag = flag;
+  
+  taosArrayPush(*pFetchs, &fetch);
+
+  return TSDB_CODE_SUCCESS;
+}
+
+SName* ctgGetFetchName(SArray* pNames, SCtgFetch* pFetch) {
+  STablesReq* pReq = (STablesReq*)taosArrayGet(pNames, pFetch->dbIdx);
+  return (SName*)taosArrayGet(pReq->pTables, pFetch->tbIdx);
+}
+
 

source/libs/parser/inc/parUtil.h

@@ -39,6 +39,11 @@ typedef struct SMsgBuf {
   char*   buf;
 } SMsgBuf;
 
+typedef struct SParseTablesMetaReq {
+  char      dbFName[TSDB_DB_FNAME_LEN];
+  SHashObj* pTables;
+} SParseTablesMetaReq;
+
 typedef struct SParseMetaCache {
   SHashObj* pTableMeta;    // key is tbFName, element is STableMeta*
   SHashObj* pDbVgroup;     // key is dbFName, element is SArray<SVgroupInfo>*
@@ -95,7 +100,7 @@ int32_t getUdfInfoFromCache(SParseMetaCache* pMetaCache, const char* pFunc, SFun
 int32_t getTableIndexFromCache(SParseMetaCache* pMetaCache, const SName* pName, SArray** pIndexes);
 int32_t getTableCfgFromCache(SParseMetaCache* pMetaCache, const SName* pName, STableCfg** pOutput);
 int32_t getDnodeListFromCache(SParseMetaCache* pMetaCache, SArray** pDnodes);
-void    destoryParseMetaCache(SParseMetaCache* pMetaCache);
+void    destoryParseMetaCache(SParseMetaCache* pMetaCache, bool request);
 
 #ifdef __cplusplus
 }

source/libs/parser/src/parUtil.c

@@ -474,6 +474,24 @@ static int32_t buildDbReq(SHashObj* pDbsHash, SArray** pDbs) {
   return TSDB_CODE_SUCCESS;
 }
 
+static int32_t buildTableReqFromDb(SHashObj* pDbsHash, SArray** pDbs) {
+  if (NULL != pDbsHash) {
+    *pDbs = taosArrayInit(taosHashGetSize(pDbsHash), sizeof(STablesReq));
+    if (NULL == *pDbs) {
+      return TSDB_CODE_OUT_OF_MEMORY;
+    }
+    SParseTablesMetaReq* p = taosHashIterate(pDbsHash, NULL);
+    while (NULL != p) {
+      STablesReq req = {0};
+      strcpy(req.dbFName, p->dbFName);
+      buildTableReq(p->pTables, &req.pTables);
+      taosArrayPush(*pDbs, &req);
+      p = taosHashIterate(pDbsHash, p);
+    }
+  }
+  return TSDB_CODE_SUCCESS;
+}
+
 static int32_t buildUserAuthReq(SHashObj* pUserAuthHash, SArray** pUserAuth) {
   if (NULL != pUserAuthHash) {
     *pUserAuth = taosArrayInit(taosHashGetSize(pUserAuthHash), sizeof(SUserAuthInfo));
@@ -513,12 +531,12 @@ static int32_t buildUdfReq(SHashObj* pUdfHash, SArray** pUdf) {
 }
 
 int32_t buildCatalogReq(const SParseMetaCache* pMetaCache, SCatalogReq* pCatalogReq) {
-  int32_t code = buildTableReq(pMetaCache->pTableMeta, &pCatalogReq->pTableMeta);
+  int32_t code = buildTableReqFromDb(pMetaCache->pTableMeta, &pCatalogReq->pTableMeta);
   if (TSDB_CODE_SUCCESS == code) {
     code = buildDbReq(pMetaCache->pDbVgroup, &pCatalogReq->pDbVgroup);
   }
   if (TSDB_CODE_SUCCESS == code) {
-    code = buildTableReq(pMetaCache->pTableVgroup, &pCatalogReq->pTableHash);
+    code = buildTableReqFromDb(pMetaCache->pTableVgroup, &pCatalogReq->pTableHash);
   }
   if (TSDB_CODE_SUCCESS == code) {
     code = buildDbReq(pMetaCache->pDbCfg, &pCatalogReq->pDbCfg);
@@ -587,6 +605,24 @@ static int32_t putDbDataToCache(const SArray* pDbReq, const SArray* pDbData, SHa
   return TSDB_CODE_SUCCESS;
 }
 
+static int32_t putDbTableDataToCache(const SArray* pDbReq, const SArray* pTableData, SHashObj** pTable) {
+  int32_t ndbs = taosArrayGetSize(pDbReq);
+  int32_t tableNo = 0;
+  for (int32_t i = 0; i < ndbs; ++i) {
+    STablesReq* pReq = taosArrayGet(pDbReq, i);
+    int32_t     ntables = taosArrayGetSize(pReq->pTables);
+    for (int32_t j = 0; j < ntables; ++j) {
+      char fullName[TSDB_TABLE_FNAME_LEN];
+      tNameExtractFullName(taosArrayGet(pReq->pTables, j), fullName);
+      if (TSDB_CODE_SUCCESS != putMetaDataToHash(fullName, strlen(fullName), pTableData, tableNo, pTable)) {
+        return TSDB_CODE_OUT_OF_MEMORY;
+      }
+      ++tableNo;
+    }
+  }
+  return TSDB_CODE_SUCCESS;
+}
+
 static int32_t putUserAuthToCache(const SArray* pUserAuthReq, const SArray* pUserAuthData, SHashObj** pUserAuth) {
   int32_t nvgs = taosArrayGetSize(pUserAuthReq);
   for (int32_t i = 0; i < nvgs; ++i) {
@@ -612,12 +648,12 @@ static int32_t putUdfToCache(const SArray* pUdfReq, const SArray* pUdfData, SHas
 }
 
 int32_t putMetaDataToCache(const SCatalogReq* pCatalogReq, const SMetaData* pMetaData, SParseMetaCache* pMetaCache) {
-  int32_t code = putTableDataToCache(pCatalogReq->pTableMeta, pMetaData->pTableMeta, &pMetaCache->pTableMeta);
+  int32_t code = putDbTableDataToCache(pCatalogReq->pTableMeta, pMetaData->pTableMeta, &pMetaCache->pTableMeta);
   if (TSDB_CODE_SUCCESS == code) {
     code = putDbDataToCache(pCatalogReq->pDbVgroup, pMetaData->pDbVgroup, &pMetaCache->pDbVgroup);
   }
   if (TSDB_CODE_SUCCESS == code) {
-    code = putTableDataToCache(pCatalogReq->pTableHash, pMetaData->pTableHash, &pMetaCache->pTableVgroup);
+    code = putDbTableDataToCache(pCatalogReq->pTableHash, pMetaData->pTableHash, &pMetaCache->pTableVgroup);
   }
   if (TSDB_CODE_SUCCESS == code) {
     code = putDbDataToCache(pCatalogReq->pDbCfg, pMetaData->pDbCfg, &pMetaCache->pDbCfg);
@@ -657,14 +693,38 @@ static int32_t reserveTableReqInCache(int32_t acctId, const char* pDb, const cha
   return reserveTableReqInCacheImpl(fullName, len, pTables);
 }
 
+static int32_t reserveTableReqInDbCacheImpl(int32_t acctId, const char* pDb, const char* pTable, SHashObj* pDbs) {
+  SParseTablesMetaReq req = {0};
+  int32_t             len = snprintf(req.dbFName, sizeof(req.dbFName), "%d.%s", acctId, pDb);
+  int32_t             code = reserveTableReqInCache(acctId, pDb, pTable, &req.pTables);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = taosHashPut(pDbs, req.dbFName, len, &req, sizeof(SParseTablesMetaReq));
+  }
+  return code;
+}
+
+static int32_t reserveTableReqInDbCache(int32_t acctId, const char* pDb, const char* pTable, SHashObj** pDbs) {
+  if (NULL == *pDbs) {
+    *pDbs = taosHashInit(4, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), true, HASH_NO_LOCK);
+    if (NULL == *pDbs) {
+      return TSDB_CODE_OUT_OF_MEMORY;
+    }
+  }
+  char                 fullName[TSDB_DB_FNAME_LEN];
+  int32_t              len = snprintf(fullName, sizeof(fullName), "%d.%s", acctId, pDb);
+  SParseTablesMetaReq* pReq = taosHashGet(*pDbs, fullName, len);
+  if (NULL == pReq) {
+    return reserveTableReqInDbCacheImpl(acctId, pDb, pTable, *pDbs);
+  }
+  return reserveTableReqInCache(acctId, pDb, pTable, &pReq->pTables);
+}
+
 int32_t reserveTableMetaInCache(int32_t acctId, const char* pDb, const char* pTable, SParseMetaCache* pMetaCache) {
-  return reserveTableReqInCache(acctId, pDb, pTable, &pMetaCache->pTableMeta);
+  return reserveTableReqInDbCache(acctId, pDb, pTable, &pMetaCache->pTableMeta);
 }
 
 int32_t reserveTableMetaInCacheExt(const SName* pName, SParseMetaCache* pMetaCache) {
-  char fullName[TSDB_TABLE_FNAME_LEN];
-  tNameExtractFullName(pName, fullName);
-  return reserveTableReqInCacheImpl(fullName, strlen(fullName), &pMetaCache->pTableMeta);
+  return reserveTableReqInDbCache(pName->acctId, pName->dbname, pName->tname, &pMetaCache->pTableMeta);
 }
 
 int32_t getTableMetaFromCache(SParseMetaCache* pMetaCache, const SName* pName, STableMeta** pMeta) {
@@ -711,13 +771,11 @@ int32_t getDbVgInfoFromCache(SParseMetaCache* pMetaCache, const char* pDbFName,
 }
 
 int32_t reserveTableVgroupInCache(int32_t acctId, const char* pDb, const char* pTable, SParseMetaCache* pMetaCache) {
-  return reserveTableReqInCache(acctId, pDb, pTable, &pMetaCache->pTableVgroup);
+  return reserveTableReqInDbCache(acctId, pDb, pTable, &pMetaCache->pTableVgroup);
 }
 
 int32_t reserveTableVgroupInCacheExt(const SName* pName, SParseMetaCache* pMetaCache) {
-  char fullName[TSDB_TABLE_FNAME_LEN];
-  tNameExtractFullName(pName, fullName);
-  return reserveTableReqInCacheImpl(fullName, strlen(fullName), &pMetaCache->pTableVgroup);
+  return reserveTableReqInDbCache(pName->acctId, pName->dbname, pName->tname, &pMetaCache->pTableVgroup);
 }
 
 int32_t getTableVgroupFromCache(SParseMetaCache* pMetaCache, const SName* pName, SVgroupInfo* pVgroup) {
@@ -919,10 +977,24 @@ int32_t getDnodeListFromCache(SParseMetaCache* pMetaCache, SArray** pDnodes) {
   return TSDB_CODE_SUCCESS;
 }
 
-void destoryParseMetaCache(SParseMetaCache* pMetaCache) {
+void destoryParseTablesMetaReqHash(SHashObj* pHash) {
+  SParseTablesMetaReq* p = taosHashIterate(pHash, NULL);
+  while (NULL != p) {
+    taosHashCleanup(p->pTables);
+    p = taosHashIterate(pHash, p);
+  }
+  taosHashCleanup(pHash);
+}
+
+void destoryParseMetaCache(SParseMetaCache* pMetaCache, bool request) {
+  if (request) {
+    destoryParseTablesMetaReqHash(pMetaCache->pTableMeta);
+    destoryParseTablesMetaReqHash(pMetaCache->pTableVgroup);
+  } else {
     taosHashCleanup(pMetaCache->pTableMeta);
-  taosHashCleanup(pMetaCache->pDbVgroup);
     taosHashCleanup(pMetaCache->pTableVgroup);
+  }
+  taosHashCleanup(pMetaCache->pDbVgroup);
   taosHashCleanup(pMetaCache->pDbCfg);
   taosHashCleanup(pMetaCache->pDbInfo);
   taosHashCleanup(pMetaCache->pUserAuth);

source/libs/parser/src/parser.c

@@ -187,7 +187,7 @@ int32_t qParseSqlSyntax(SParseContext* pCxt, SQuery** pQuery, struct SCatalogReq
   if (TSDB_CODE_SUCCESS == code) {
     code = buildCatalogReq(&metaCache, pCatalogReq);
   }
-  destoryParseMetaCache(&metaCache);
+  destoryParseMetaCache(&metaCache, true);
   terrno = code;
   return code;
 }
@@ -203,7 +203,7 @@ int32_t qAnalyseSqlSemantic(SParseContext* pCxt, const struct SCatalogReq* pCata
       code = analyseSemantic(pCxt, pQuery, &metaCache);
     }
   }
-  destoryParseMetaCache(&metaCache);
+  destoryParseMetaCache(&metaCache, false);
   terrno = code;
   return code;
 }

source/libs/parser/test/mockCatalogService.cpp

@@ -472,28 +472,36 @@ class MockCatalogServiceImpl {
 
   int32_t getAllTableMeta(SArray* pTableMetaReq, SArray** pTableMetaData) const {
     if (NULL != pTableMetaReq) {
-      int32_t ntables = taosArrayGetSize(pTableMetaReq);
-      *pTableMetaData = taosArrayInit(ntables, sizeof(SMetaRes));
-      for (int32_t i = 0; i < ntables; ++i) {
+      int32_t ndbs = taosArrayGetSize(pTableMetaReq);
+      *pTableMetaData = taosArrayInit(ndbs, sizeof(SMetaRes));
+      for (int32_t i = 0; i < ndbs; ++i) {
+        STablesReq* pReq = (STablesReq*)taosArrayGet(pTableMetaReq, i);
+        int32_t     ntables = taosArrayGetSize(pReq->pTables);
+        for (int32_t j = 0; j < ntables; ++j) {
           SMetaRes res = {0};
-        res.code = catalogGetTableMeta((const SName*)taosArrayGet(pTableMetaReq, i), (STableMeta**)&res.pRes);
+          res.code = catalogGetTableMeta((const SName*)taosArrayGet(pReq->pTables, j), (STableMeta**)&res.pRes);
           taosArrayPush(*pTableMetaData, &res);
         }
       }
+    }
     return TSDB_CODE_SUCCESS;
   }
 
   int32_t getAllTableVgroup(SArray* pTableVgroupReq, SArray** pTableVgroupData) const {
     if (NULL != pTableVgroupReq) {
-      int32_t ntables = taosArrayGetSize(pTableVgroupReq);
-      *pTableVgroupData = taosArrayInit(ntables, sizeof(SMetaRes));
-      for (int32_t i = 0; i < ntables; ++i) {
+      int32_t ndbs = taosArrayGetSize(pTableVgroupReq);
+      *pTableVgroupData = taosArrayInit(ndbs, sizeof(SMetaRes));
+      for (int32_t i = 0; i < ndbs; ++i) {
+        STablesReq* pReq = (STablesReq*)taosArrayGet(pTableVgroupReq, i);
+        int32_t     ntables = taosArrayGetSize(pReq->pTables);
+        for (int32_t j = 0; j < ntables; ++j) {
           SMetaRes res = {0};
           res.pRes = taosMemoryCalloc(1, sizeof(SVgroupInfo));
-        res.code = catalogGetTableHashVgroup((const SName*)taosArrayGet(pTableVgroupReq, i), (SVgroupInfo*)res.pRes);
+          res.code = catalogGetTableHashVgroup((const SName*)taosArrayGet(pReq->pTables, j), (SVgroupInfo*)res.pRes);
           taosArrayPush(*pTableVgroupData, &res);
         }
       }
+    }
     return TSDB_CODE_SUCCESS;
   }
 
@@ -677,12 +685,17 @@ int32_t MockCatalogService::catalogGetAllMeta(const SCatalogReq* pCatalogReq, SM
   return impl_->catalogGetAllMeta(pCatalogReq, pMetaData);
 }
 
+void MockCatalogService::destoryTablesReq(void* p) {
+  STablesReq* pRes = (STablesReq*)p;
+  taosArrayDestroy(pRes->pTables);
+}
+
 void MockCatalogService::destoryCatalogReq(SCatalogReq* pReq) {
   taosArrayDestroy(pReq->pDbVgroup);
   taosArrayDestroy(pReq->pDbCfg);
   taosArrayDestroy(pReq->pDbInfo);
-  taosArrayDestroy(pReq->pTableMeta);
-  taosArrayDestroy(pReq->pTableHash);
+  taosArrayDestroyEx(pReq->pTableMeta, destoryTablesReq);
+  taosArrayDestroyEx(pReq->pTableHash, destoryTablesReq);
   taosArrayDestroy(pReq->pUdf);
   taosArrayDestroy(pReq->pIndex);
   taosArrayDestroy(pReq->pUser);

source/libs/parser/test/mockCatalogService.h

@@ -50,6 +50,7 @@ struct MockTableMeta {
 class MockCatalogServiceImpl;
 class MockCatalogService {
  public:
+  static void destoryTablesReq(void* p);
   static void destoryCatalogReq(SCatalogReq* pReq);
   static void destoryMetaRes(void* p);
   static void destoryMetaArrayRes(void* p);

source/libs/parser/test/parInsertTest.cpp

@@ -13,6 +13,8 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <functional>
+
 #include <gtest/gtest.h>
 
 #include "mockCatalogService.h"
@@ -20,6 +22,7 @@
 #include "parInt.h"
 
 using namespace std;
+using namespace std::placeholders;
 using namespace testing;
 
 namespace {
@@ -63,7 +66,9 @@ class InsertTest : public Test {
 
   int32_t runAsync() {
     cxt_.async = true;
-    unique_ptr<SParseMetaCache, void (*)(SParseMetaCache*)> metaCache(new SParseMetaCache(), _destoryParseMetaCache);
+    bool                                                           request = true;
+    unique_ptr<SParseMetaCache, function<void(SParseMetaCache*)> > metaCache(
+        new SParseMetaCache(), std::bind(_destoryParseMetaCache, _1, cref(request)));
     code_ = parseInsertSyntax(&cxt_, &res_, metaCache.get());
     if (code_ != TSDB_CODE_SUCCESS) {
       cout << "parseInsertSyntax code:" << toString(code_) << ", msg:" << errMagBuf_ << endl;
@@ -81,6 +86,8 @@ class InsertTest : public Test {
     unique_ptr<SMetaData, void (*)(SMetaData*)> metaData(new SMetaData(), MockCatalogService::destoryMetaData);
     g_mockCatalogService->catalogGetAllMeta(catalogReq.get(), metaData.get());
 
+    metaCache.reset(new SParseMetaCache());
+    request = false;
     code_ = putMetaDataToCache(catalogReq.get(), metaData.get(), metaCache.get());
     if (code_ != TSDB_CODE_SUCCESS) {
       cout << "putMetaDataToCache code:" << toString(code_) << ", msg:" << errMagBuf_ << endl;
@@ -144,8 +151,8 @@ class InsertTest : public Test {
   static const int max_err_len = 1024;
   static const int max_sql_len = 1024 * 1024;
 
-  static void _destoryParseMetaCache(SParseMetaCache* pMetaCache) {
-    destoryParseMetaCache(pMetaCache);
+  static void _destoryParseMetaCache(SParseMetaCache* pMetaCache, bool request) {
+    destoryParseMetaCache(pMetaCache, request);
     delete pMetaCache;
   }
 

source/libs/parser/test/parTestUtil.cpp

@@ -24,6 +24,7 @@
 #include "parInt.h"
 
 using namespace std;
+using namespace std::placeholders;
 using namespace testing;
 
 namespace ParserTest {
@@ -118,8 +119,8 @@ class ParserTestBaseImpl {
     TEST_INTERFACE_ASYNC_API
   };
 
-  static void _destoryParseMetaCache(SParseMetaCache* pMetaCache) {
-    destoryParseMetaCache(pMetaCache);
+  static void _destoryParseMetaCache(SParseMetaCache* pMetaCache, bool request) {
+    destoryParseMetaCache(pMetaCache, request);
     delete pMetaCache;
   }
 
@@ -340,7 +341,9 @@ class ParserTestBaseImpl {
       doParse(&cxt, query.get());
       SQuery* pQuery = *(query.get());
 
-      unique_ptr<SParseMetaCache, void (*)(SParseMetaCache*)> metaCache(new SParseMetaCache(), _destoryParseMetaCache);
+      bool                                                           request = true;
+      unique_ptr<SParseMetaCache, function<void(SParseMetaCache*)> > metaCache(
+          new SParseMetaCache(), bind(_destoryParseMetaCache, _1, cref(request)));
       doCollectMetaKey(&cxt, pQuery, metaCache.get());
 
       unique_ptr<SCatalogReq, void (*)(SCatalogReq*)> catalogReq(new SCatalogReq(),
@@ -353,6 +356,8 @@ class ParserTestBaseImpl {
           unique_ptr<SMetaData, void (*)(SMetaData*)> metaData(new SMetaData(), MockCatalogService::destoryMetaData);
           doGetAllMeta(catalogReq.get(), metaData.get());
 
+          metaCache.reset(new SParseMetaCache());
+          request = false;
           doPutMetaDataToCache(catalogReq.get(), metaData.get(), metaCache.get());
 
           doAuthenticate(&cxt, pQuery, metaCache.get());

source/libs/qcom/src/queryUtil.c

@@ -462,3 +462,5 @@ int32_t cloneDbVgInfo(SDBVgInfo* pSrc, SDBVgInfo** pDst) {
 
   return TSDB_CODE_SUCCESS;
 }
+
+

source/libs/qworker/src/qwMsg.c

@@ -387,10 +387,13 @@ int32_t qWorkerProcessQueryMsg(void *node, void *qWorkerMgmt, SRpcMsg *pMsg, int
   
   char * sql = strndup(msg->msg, msg->sqlLen);
   QW_SCH_TASK_DLOG("processQuery start, node:%p, type:%s, handle:%p, SQL:%s", node, TMSG_INFO(pMsg->msgType), pMsg->info.handle, sql);
-  QW_ERR_RET(qwProcessQuery(QW_FPARAMS(), &qwMsg, sql));
-  QW_SCH_TASK_DLOG("processQuery end, node:%p", node);
+  QW_ERR_JRET(qwProcessQuery(QW_FPARAMS(), &qwMsg, sql));
 
-  return TSDB_CODE_SUCCESS;
+_return:
+
+  QW_SCH_TASK_DLOG("processQuery end, node:%p, code:%d", node, code);
+
+  return code;
 }
 
 int32_t qWorkerProcessCQueryMsg(void *node, void *qWorkerMgmt, SRpcMsg *pMsg, int64_t ts) {