Merge branch 'develop' into feature/slguan

packaging/cfg/taos.cfg

@@ -58,6 +58,12 @@
 # The server and client should have the same socket type. Otherwise, connect will fail.
 # sockettype            udp
 
+# The compressed rpc message, option:
+#  -1 (no compression)
+#   0 (all message compressed),
+# > 0 (rpc message body which larger than this value will be compressed)
+# compressMsgSize       -1
+
 # RPC re-try timer, millisecond
 # rpcTimer              300
 

src/client/inc/tscSQLParser.h

@@ -105,6 +105,7 @@ enum TSQL_TYPE {
   SHOW_MODULES = 0x6c,
   SHOW_CONNECTIONS = 0x6d,
   SHOW_GRANTS = 0x6e,
+  SHOW_VNODES = 0x6f,
 
   // create dnode
   CREATE_DNODE = 0x80,

src/client/src/tscSQLParser.c

@@ -291,7 +291,8 @@ int32_t tscToSQLCmd(SSqlObj* pSql, struct SSqlInfo* pInfo) {
     case SHOW_STREAMS:
     case SHOW_SCORES:
     case SHOW_GRANTS:
-    case SHOW_CONFIGS: {
+    case SHOW_CONFIGS: 
+    case SHOW_VNODES: {
       return setShowInfo(pSql, pInfo);
     }
 
@@ -2595,6 +2596,9 @@ int32_t setShowInfo(SSqlObj* pSql, struct SSqlInfo* pInfo) {
     case SHOW_CONFIGS:
       pCmd->showType = TSDB_MGMT_TABLE_CONFIGS;
       break;
+    case SHOW_VNODES:
+      pCmd->showType = TSDB_MGMT_TABLE_VNODES;
+      break;
     default:
       return TSDB_CODE_INVALID_SQL;
   }
@@ -2640,6 +2644,19 @@ int32_t setShowInfo(SSqlObj* pSql, struct SSqlInfo* pInfo) {
         }
       }
     }
+  }else if (type == SHOW_VNODES) {
+    // show vnodes may be ip addr of dnode in payload
+    if (pInfo->pDCLInfo->nTokens > 0) {
+      SSQLToken* pDnodeIp = &pInfo->pDCLInfo->a[0];
+
+      if (pDnodeIp->n > TSDB_IPv4ADDR_LEN) {  // ip addr is too long
+        setErrMsg(pCmd, msg);
+        return TSDB_CODE_INVALID_SQL;
+      }
+
+      strncpy(pCmd->payload, pDnodeIp->z, pDnodeIp->n);
+      pCmd->payloadLen = strdequote(pCmd->payload);
+    }
   }
 
   return TSDB_CODE_SUCCESS;

src/client/src/tscServer.c

@@ -2175,7 +2175,7 @@ int tscBuildShowMsg(SSqlObj *pSql) {
   pShowMsg = (SShowMsg *)pMsg;
   pShowMsg->type = pCmd->showType;
 
-  if ((pShowMsg->type == TSDB_MGMT_TABLE_TABLE || pShowMsg->type == TSDB_MGMT_TABLE_METRIC) && pCmd->payloadLen != 0) {
+  if ((pShowMsg->type == TSDB_MGMT_TABLE_TABLE || pShowMsg->type == TSDB_MGMT_TABLE_METRIC || pShowMsg->type == TSDB_MGMT_TABLE_VNODES ) && pCmd->payloadLen != 0) {
     // only show tables support wildcard query
     pShowMsg->payloadLen = htons(pCmd->payloadLen);
     memcpy(pShowMsg->payload, payload, pCmd->payloadLen);
@@ -3652,7 +3652,7 @@ int tscRenewMeterMeta(SSqlObj *pSql, char *meterId) {
    */
   if (pMeterMetaInfo->pMeterMeta == NULL || !tscQueryOnMetric(pCmd)) {
     if (pMeterMetaInfo->pMeterMeta) {
-      tscTrace("%p update meter meta, old: numOfTags:%d, numOfCols:%d, uid:%d, addr:%p", pSql,
+      tscTrace("%p update meter meta, old: numOfTags:%d, numOfCols:%d, uid:%lld, addr:%p", pSql,
                pMeterMetaInfo->numOfTags, pCmd->numOfCols, pMeterMetaInfo->pMeterMeta->uid, pMeterMetaInfo->pMeterMeta);
     }
     tscWaitingForCreateTable(&pSql->cmd);

src/inc/sql.y

@@ -73,6 +73,9 @@ cmd ::= SHOW CONFIGS.    { setDCLSQLElems(pInfo, SHOW_CONFIGS, 0);  }
 cmd ::= SHOW SCORES.     { setDCLSQLElems(pInfo, SHOW_SCORES, 0);   }
 cmd ::= SHOW GRANTS.     { setDCLSQLElems(pInfo, SHOW_GRANTS, 0);   }
 
+cmd ::= SHOW VNODES.                { setDCLSQLElems(pInfo, SHOW_VNODES, 0); }
+cmd ::= SHOW VNODES IPTOKEN(X).     { setDCLSQLElems(pInfo, SHOW_VNODES, 1, &X); }
+
 %type dbPrefix {SSQLToken}
 dbPrefix(A) ::=.                   {A.n = 0;}
 dbPrefix(A) ::= ids(X) DOT.        {A = X;  }
@@ -658,4 +661,4 @@ cmd ::= KILL QUERY IPTOKEN(X) COLON(Z) INTEGER(Y) COLON(K) INTEGER(F).        {X
   DELIMITERS DESC DETACH EACH END EXPLAIN FAIL FOR GLOB IGNORE IMMEDIATE INITIALLY INSTEAD
   LIKE MATCH KEY OF OFFSET RAISE REPLACE RESTRICT ROW STATEMENT TRIGGER VIEW ALL
   COUNT SUM AVG MIN MAX FIRST LAST TOP BOTTOM STDDEV PERCENTILE APERCENTILE LEASTSQUARES HISTOGRAM DIFF
-  SPREAD TWA INTERP LAST_ROW NOW IPTOKEN SEMI NONE PREV LINEAR IMPORT METRIC TBNAME JOIN METRICS STABLE NULL.
\ No newline at end of file
+  SPREAD TWA INTERP LAST_ROW NOW IPTOKEN SEMI NONE PREV LINEAR IMPORT METRIC TBNAME JOIN METRICS STABLE NULL.

src/inc/taosmsg.h

@@ -158,6 +158,7 @@ enum _mgmt_table {
   TSDB_MGMT_TABLE_CONNS,
   TSDB_MGMT_TABLE_SCORES,
   TSDB_MGMT_TABLE_GRANTS,
+  TSDB_MGMT_TABLE_VNODES,
   TSDB_MGMT_TABLE_MAX,
 };
 
@@ -224,7 +225,7 @@ typedef struct {
   char     meterId[TSDB_UNI_LEN];
   uint16_t port;  // for UDP only
   char     empty[1];
-  char     msgType;
+  uint8_t  msgType;
   int32_t  msgLen;
   uint8_t  content[0];
 } STaosHeader;

src/inc/tglobalcfg.h

@@ -256,6 +256,8 @@ SGlobalConfig *tsGetConfigOption(const char *option);
 #define TSDB_CFG_OPTION_LEN 24
 #define TSDB_CFG_VALUE_LEN  41
 
+#define NEEDTO_COMPRESSS_MSG(size) (tsCompressMsgSize != -1 && (size) > tsCompressMsgSize)
+
 #ifdef __cplusplus
 }
 #endif

src/inc/tsqldef.h

@@ -72,145 +72,144 @@
 #define TK_CONFIGS                         54
 #define TK_SCORES                          55
 #define TK_GRANTS                          56
-#define TK_DOT                             57
-#define TK_TABLES                          58
-#define TK_STABLES                         59
-#define TK_VGROUPS                         60
-#define TK_DROP                            61
-#define TK_TABLE                           62
-#define TK_DATABASE                        63
-#define TK_DNODE                           64
-#define TK_IPTOKEN                         65
-#define TK_USER                            66
-#define TK_ACCOUNT                         67
-#define TK_USE                             68
-#define TK_DESCRIBE                        69
-#define TK_ALTER                           70
-#define TK_PASS                            71
-#define TK_PRIVILEGE                       72
-#define TK_LOCAL                           73
-#define TK_IF                              74
-#define TK_EXISTS                          75
-#define TK_CREATE                          76
-#define TK_PPS                             77
-#define TK_TSERIES                         78
-#define TK_DBS                             79
-#define TK_STORAGE                         80
-#define TK_QTIME                           81
-#define TK_CONNS                           82
-#define TK_STATE                           83
-#define TK_KEEP                            84
-#define TK_CACHE                           85
-#define TK_REPLICA                         86
-#define TK_DAYS                            87
-#define TK_ROWS                            88
-#define TK_ABLOCKS                         89
-#define TK_TBLOCKS                         90
-#define TK_CTIME                           91
-#define TK_CLOG                            92
-#define TK_COMP                            93
-#define TK_PRECISION                       94
-#define TK_LP                              95
-#define TK_RP                              96
-#define TK_TAGS                            97
-#define TK_USING                           98
-#define TK_AS                              99
-#define TK_COMMA                          100
-#define TK_NULL                           101
-#define TK_SELECT                         102
-#define TK_FROM                           103
-#define TK_VARIABLE                       104
-#define TK_INTERVAL                       105
-#define TK_FILL                           106
-#define TK_SLIDING                        107
-#define TK_ORDER                          108
-#define TK_BY                             109
-#define TK_ASC                            110
-#define TK_DESC                           111
-#define TK_GROUP                          112
-#define TK_HAVING                         113
-#define TK_LIMIT                          114
-#define TK_OFFSET                         115
-#define TK_SLIMIT                         116
-#define TK_SOFFSET                        117
-#define TK_WHERE                          118
-#define TK_NOW                            119
-#define TK_INSERT                         120
-#define TK_INTO                           121
-#define TK_VALUES                         122
-#define TK_RESET                          123
-#define TK_QUERY                          124
-#define TK_ADD                            125
-#define TK_COLUMN                         126
-#define TK_TAG                            127
-#define TK_CHANGE                         128
-#define TK_SET                            129
-#define TK_KILL                           130
-#define TK_CONNECTION                     131
-#define TK_COLON                          132
-#define TK_STREAM                         133
-#define TK_ABORT                          134
-#define TK_AFTER                          135
-#define TK_ATTACH                         136
-#define TK_BEFORE                         137
-#define TK_BEGIN                          138
-#define TK_CASCADE                        139
-#define TK_CLUSTER                        140
-#define TK_CONFLICT                       141
-#define TK_COPY                           142
-#define TK_DEFERRED                       143
-#define TK_DELIMITERS                     144
-#define TK_DETACH                         145
-#define TK_EACH                           146
-#define TK_END                            147
-#define TK_EXPLAIN                        148
-#define TK_FAIL                           149
-#define TK_FOR                            150
-#define TK_IGNORE                         151
-#define TK_IMMEDIATE                      152
-#define TK_INITIALLY                      153
-#define TK_INSTEAD                        154
-#define TK_MATCH                          155
-#define TK_KEY                            156
-#define TK_OF                             157
-#define TK_RAISE                          158
-#define TK_REPLACE                        159
-#define TK_RESTRICT                       160
-#define TK_ROW                            161
-#define TK_STATEMENT                      162
-#define TK_TRIGGER                        163
-#define TK_VIEW                           164
-#define TK_ALL                            165
-#define TK_COUNT                          166
-#define TK_SUM                            167
-#define TK_AVG                            168
-#define TK_MIN                            169
-#define TK_MAX                            170
-#define TK_FIRST                          171
-#define TK_LAST                           172
-#define TK_TOP                            173
-#define TK_BOTTOM                         174
-#define TK_STDDEV                         175
-#define TK_PERCENTILE                     176
-#define TK_APERCENTILE                    177
-#define TK_LEASTSQUARES                   178
-#define TK_HISTOGRAM                      179
-#define TK_DIFF                           180
-#define TK_SPREAD                         181
-#define TK_TWA                            182
-#define TK_INTERP                         183
-#define TK_LAST_ROW                       184
-#define TK_SEMI                           185
-#define TK_NONE                           186
-#define TK_PREV                           187
-#define TK_LINEAR                         188
-#define TK_IMPORT                         189
-#define TK_METRIC                         190
-#define TK_TBNAME                         191
-#define TK_JOIN                           192
-#define TK_METRICS                        193
-#define TK_STABLE                         194
+#define TK_VNODES                          57
+#define TK_IPTOKEN                         58
+#define TK_DOT                             59
+#define TK_TABLES                          60
+#define TK_STABLES                         61
+#define TK_VGROUPS                         62
+#define TK_DROP                            63
+#define TK_TABLE                           64
+#define TK_DATABASE                        65
+#define TK_DNODE                           66
+#define TK_USER                            67
+#define TK_ACCOUNT                         68
+#define TK_USE                             69
+#define TK_DESCRIBE                        70
+#define TK_ALTER                           71
+#define TK_PASS                            72
+#define TK_PRIVILEGE                       73
+#define TK_LOCAL                           74
+#define TK_IF                              75
+#define TK_EXISTS                          76
+#define TK_CREATE                          77
+#define TK_PPS                             78
+#define TK_TSERIES                         79
+#define TK_DBS                             80
+#define TK_STORAGE                         81
+#define TK_QTIME                           82
+#define TK_CONNS                           83
+#define TK_STATE                           84
+#define TK_KEEP                            85
+#define TK_CACHE                           86
+#define TK_REPLICA                         87
+#define TK_DAYS                            88
+#define TK_ROWS                            89
+#define TK_ABLOCKS                         90
+#define TK_TBLOCKS                         91
+#define TK_CTIME                           92
+#define TK_CLOG                            93
+#define TK_COMP                            94
+#define TK_PRECISION                       95
+#define TK_LP                              96
+#define TK_RP                              97
+#define TK_TAGS                            98
+#define TK_USING                           99
+#define TK_AS                             100
+#define TK_COMMA                          101
+#define TK_NULL                           102
+#define TK_SELECT                         103
+#define TK_FROM                           104
+#define TK_VARIABLE                       105
+#define TK_INTERVAL                       106
+#define TK_FILL                           107
+#define TK_SLIDING                        108
+#define TK_ORDER                          109
+#define TK_BY                             110
+#define TK_ASC                            111
+#define TK_DESC                           112
+#define TK_GROUP                          113
+#define TK_HAVING                         114
+#define TK_LIMIT                          115
+#define TK_OFFSET                         116
+#define TK_SLIMIT                         117
+#define TK_SOFFSET                        118
+#define TK_WHERE                          119
+#define TK_NOW                            120
+#define TK_INSERT                         121
+#define TK_INTO                           122
+#define TK_VALUES                         123
+#define TK_RESET                          124
+#define TK_QUERY                          125
+#define TK_ADD                            126
+#define TK_COLUMN                         127
+#define TK_TAG                            128
+#define TK_CHANGE                         129
+#define TK_SET                            130
+#define TK_KILL                           131
+#define TK_CONNECTION                     132
+#define TK_COLON                          133
+#define TK_STREAM                         134
+#define TK_ABORT                          135
+#define TK_AFTER                          136
+#define TK_ATTACH                         137
+#define TK_BEFORE                         138
+#define TK_BEGIN                          139
+#define TK_CASCADE                        140
+#define TK_CLUSTER                        141
+#define TK_CONFLICT                       142
+#define TK_COPY                           143
+#define TK_DEFERRED                       144
+#define TK_DELIMITERS                     145
+#define TK_DETACH                         146
+#define TK_EACH                           147
+#define TK_END                            148
+#define TK_EXPLAIN                        149
+#define TK_FAIL                           150
+#define TK_FOR                            151
+#define TK_IGNORE                         152
+#define TK_IMMEDIATE                      153
+#define TK_INITIALLY                      154
+#define TK_INSTEAD                        155
+#define TK_MATCH                          156
+#define TK_KEY                            157
+#define TK_OF                             158
+#define TK_RAISE                          159
+#define TK_REPLACE                        160
+#define TK_RESTRICT                       161
+#define TK_ROW                            162
+#define TK_STATEMENT                      163
+#define TK_TRIGGER                        164
+#define TK_VIEW                           165
+#define TK_ALL                            166
+#define TK_COUNT                          167
+#define TK_SUM                            168
+#define TK_AVG                            169
+#define TK_MIN                            170
+#define TK_MAX                            171
+#define TK_FIRST                          172
+#define TK_LAST                           173
+#define TK_TOP                            174
+#define TK_BOTTOM                         175
+#define TK_STDDEV                         176
+#define TK_PERCENTILE                     177
+#define TK_APERCENTILE                    178
+#define TK_LEASTSQUARES                   179
+#define TK_HISTOGRAM                      180
+#define TK_DIFF                           181
+#define TK_SPREAD                         182
+#define TK_TWA                            183
+#define TK_INTERP                         184
+#define TK_LAST_ROW                       185
+#define TK_SEMI                           186
+#define TK_NONE                           187
+#define TK_PREV                           188
+#define TK_LINEAR                         189
+#define TK_IMPORT                         190
+#define TK_METRIC                         191
+#define TK_TBNAME                         192
+#define TK_JOIN                           193
+#define TK_METRICS                        194
+#define TK_STABLE                         195
 
 #endif
-
-

src/rpc/src/trpc.c

@@ -14,7 +14,6 @@
  */
 
 #include "os.h"
-
 #include "shash.h"
 #include "taosmsg.h"
 #include "tidpool.h"
@@ -30,6 +29,7 @@
 #include "ttimer.h"
 #include "tudp.h"
 #include "tutil.h"
+#include "lz4.h"
 
 #pragma GCC diagnostic ignored "-Wpointer-to-int-cast"
 
@@ -50,8 +50,7 @@ typedef struct {
   char     encrypt;
   uint8_t  secret[TSDB_KEY_LEN];
   uint8_t  ckey[TSDB_KEY_LEN];
-
-  uint16_t           localPort;  // for UDP only
+  uint16_t           localPort;      // for UDP only
   uint32_t           peerUid;
   uint32_t           peerIp;         // peer IP
   uint16_t           peerPort;       // peer port
@@ -66,7 +65,7 @@ typedef struct {
   void *             chandle;  // handle passed by TCP/UDP connection layer
   void *             ahandle;  // handle returned by upper app layter
   int                retry;
-  int                tretry;  // total retry
+  int                tretry;   // total retry
   void *             pTimer;
   void *             pIdleTimer;
   char *             pRspMsg;
@@ -79,7 +78,7 @@ typedef struct {
 
 typedef struct {
   int             sessions;
-  void *          qhandle;  // for scheduler
+  void *          qhandle; // for scheduler
   SRpcConn *      connList;
   void *          idPool;
   void *          tmrCtrl;
@@ -94,11 +93,11 @@ typedef struct rpc_server {
   int   mask;
   int   numOfChanns;
   int   numOfThreads;
-  int   idMgmt;  // ID management method
+  int   idMgmt;   // ID management method
   int   type;
-  int   idleTime;  // milliseconds;
-  int   noFree;    // do not free the request msg when rsp is received
-  int   index;     // for UDP server, next thread for new connection
+  int   idleTime; // milliseconds;
+  int   noFree;   // do not free the request msg when rsp is received
+  int   index;    // for UDP server, next thread for new connection
   uint16_t localPort;
   char  label[12];
   void *(*fp)(char *, void *ahandle, void *thandle);
@@ -107,8 +106,7 @@ typedef struct rpc_server {
   SRpcChann *channList;
 } STaosRpc;
 
-
-int      tsRpcProgressTime = 10;  // milliseocnds
+int tsRpcProgressTime = 10;  // milliseocnds
 
 // not configurable
 int tsRpcMaxRetry;
@@ -141,6 +139,89 @@ void  taosProcessSchedMsg(SSchedMsg *pMsg);
 int   taosAuthenticateMsg(uint8_t *pMsg, int msgLen, uint8_t *pAuth, uint8_t *pKey);
 int   taosBuildAuthHeader(uint8_t *pMsg, int msgLen, uint8_t *pAuth, uint8_t *pKey);
 
+static int32_t taosCompressRpcMsg(char* pCont, int32_t contLen) {
+  STaosHeader* pHeader = (STaosHeader *)(pCont - sizeof(STaosHeader));
+  int32_t overhead = sizeof(int32_t) * 2;
+  int32_t finalLen = 0;
+  
+  if (!NEEDTO_COMPRESSS_MSG(contLen)) {
+    return contLen;
+  }
+  
+  char *buf = malloc (contLen + overhead + 8);  // 16 extra bytes
+  if (buf == NULL) {
+    tError("failed to allocate memory for rpc msg compression, contLen:%d, reason:%s", contLen, strerror(errno));
+    return contLen;
+  }
+  
+  int32_t compLen = LZ4_compress_default(pCont, buf, contLen, contLen + overhead);
+  
+  /*
+   * only the compressed size is less than the value of contLen - overhead, the compression is applied
+   * The first four bytes is set to 0, the second four bytes are utilized to keep the original length of message
+   */
+  if (compLen < contLen - overhead) {
+    //tDump(pCont, contLen);
+    int32_t *pLen = (int32_t *)pCont;
+    
+    *pLen = 0;    // first 4 bytes must be zero
+    pLen = (int32_t *)(pCont + sizeof(int32_t));
+    
+    *pLen = htonl(contLen); // contLen is encoded in second 4 bytes
+    memcpy(pCont + overhead, buf, compLen);
+    
+    pHeader->comp = 1;
+    tTrace("compress rpc msg, before:%lld, after:%lld", contLen, compLen);
+    
+    finalLen = compLen + overhead;
+    //tDump(pCont, contLen);
+  } else {
+    finalLen = contLen;
+  }
+
+  free(buf);
+  return finalLen;
+}
+
+static STaosHeader* taosDecompressRpcMsg(STaosHeader* pHeader, SSchedMsg* pSchedMsg, int32_t msgLen) {
+  int overhead = sizeof(int32_t) * 2;
+  
+  if (pHeader->comp == 0) {
+    pSchedMsg->msg = (char *)(&(pHeader->destId));
+    return pHeader;
+  }
+  
+  // decompress the content
+  assert(GET_INT32_VAL(pHeader->content) == 0);
+  
+  // contLen is original message length before compression applied
+  int contLen = htonl(GET_INT32_VAL(pHeader->content + sizeof(int32_t)));
+  
+  // prepare the temporary buffer to decompress message
+  char *buf = malloc(sizeof(STaosHeader) + contLen);
+  
+  //tDump(pHeader->content, msgLen);
+  
+  if (buf) {
+    int32_t originalLen = LZ4_decompress_safe(pHeader->content + overhead, buf + sizeof(STaosHeader),
+        msgLen - overhead, contLen);
+    
+    memcpy(buf, pHeader, sizeof(STaosHeader));
+    free(pHeader); // free the compressed message buffer
+  
+    STaosHeader* pNewHeader = (STaosHeader *) buf;
+    pNewHeader->msgLen = originalLen + (int) sizeof(SIntMsg);
+    assert(originalLen == contLen);
+
+    pSchedMsg->msg = (char *)(&(pNewHeader->destId));
+    //tDump(pHeader->content, contLen);
+    return pNewHeader;
+  } else {
+    tError("failed to allocate memory to decompress msg, contLen:%d, reason:%s", contLen, strerror(errno));
+    pSchedMsg->msg = NULL;
+  }
+}
+
 char *taosBuildReqHeader(void *param, char type, char *msg) {
   STaosHeader *pHeader;
   SRpcConn *   pConn = (SRpcConn *)param;
@@ -1074,8 +1155,9 @@ void *taosProcessDataFromPeer(char *data, int dataLen, uint32_t ip, uint16_t por
   if (code != 0) {
     // parsing error
 
-    if (pHeader->msgType & 1) {
+    if (pHeader->msgType & 1U) {
       memset(pReply, 0, sizeof(pReply));
+      
       msgLen = taosBuildErrorMsgToPeer(data, code, pReply);
       (*taosSendData[pServer->type])(ip, port, pReply, msgLen, chandle);
       tTrace("%s cid:%d sid:%d id:%s, %s is sent with error code:%u pConn:%p", pServer->label, chann, sid,
@@ -1090,17 +1172,17 @@ void *taosProcessDataFromPeer(char *data, int dataLen, uint32_t ip, uint16_t por
     // parsing OK
 
     // internal communication is based on TAOS protocol, a trick here to make it efficient
-    pHeader->msgLen = msgLen - (int)sizeof(STaosHeader) + (int)sizeof(SIntMsg);
-    if (pHeader->spi) pHeader->msgLen -= sizeof(STaosDigest);
+    if (pHeader->spi) msgLen -= sizeof(STaosDigest);
+    msgLen -= (int)sizeof(STaosHeader);
+    pHeader->msgLen = msgLen + (int)sizeof(SIntMsg);
 
-    if ((pHeader->msgType & 1) == 0 && (pHeader->content[0] == TSDB_CODE_INVALID_VALUE)) {
+    if ((pHeader->msgType & 1U) == 0 && (pHeader->content[0] == TSDB_CODE_INVALID_VALUE)) {
       schedMsg.msg = NULL;  // connection shall be closed
     } else {
-      schedMsg.msg = (char *)(&(pHeader->destId));
-      // memcpy(schedMsg.msg, (char *)(&(pHeader->destId)), pHeader->msgLen);
+      pHeader = taosDecompressRpcMsg(pHeader, &schedMsg, msgLen);
     }
 
-    if (pHeader->msgType < TSDB_MSG_TYPE_HEARTBEAT || (rpcDebugFlag & 16)) {
+    if (pHeader->msgType < TSDB_MSG_TYPE_HEARTBEAT || (rpcDebugFlag & 16U)) {
       tTrace("%s cid:%d sid:%d id:%s, %s is put into queue, msgLen:%d pConn:%p pTimer:%p", pServer->label, chann, sid,
              pHeader->meterId, taosMsg[pHeader->msgType], pHeader->msgLen, pConn, pConn->pTimer);
     }
@@ -1132,9 +1214,12 @@ int taosSendMsgToPeerH(void *thandle, char *pCont, int contLen, void *ahandle) {
   pChann = pServer->channList + pConn->chann;
   pHeader = (STaosHeader *)(pCont - sizeof(STaosHeader));
   msg = (char *)pHeader;
-  msgLen = contLen + (int32_t)sizeof(STaosHeader);
 
-  if ((pHeader->msgType & 1) == 0 && pConn->localPort) pHeader->port = pConn->localPort;
+  if ((pHeader->msgType & 1U) == 0 && pConn->localPort) pHeader->port = pConn->localPort;
+  
+  contLen = taosCompressRpcMsg(pCont, contLen);
+
+  msgLen = contLen + (int32_t)sizeof(STaosHeader);
 
   if (pConn->spi) {
     // add auth part
@@ -1151,7 +1236,7 @@ int taosSendMsgToPeerH(void *thandle, char *pCont, int contLen, void *ahandle) {
   pthread_mutex_lock(&pChann->mutex);
   msgType = pHeader->msgType;
 
-  if ((msgType & 1) == 0) {
+  if ((msgType & 1U) == 0) {
     // response
     pConn->inType = 0;
     tfree(pConn->pRspMsg);

src/system/detail/inc/mgmt.h

@@ -410,6 +410,9 @@ int mgmtRetrieveScores(SShowObj *pShow, char *data, int rows, SConnObj *pConn);
 int grantGetGrantsMeta(SMeterMeta *pMeta, SShowObj *pShow, SConnObj *pConn);
 int grantRetrieveGrants(SShowObj *pShow, char *data, int rows, SConnObj *pConn);
 
+int  mgmtGetVnodeMeta(SMeterMeta *pMeta, SShowObj *pShow, SConnObj *pConn);
+int  mgmtRetrieveVnodes(SShowObj *pShow, char *data, int rows, SConnObj *pConn);
+
 // dnode balance api
 int  mgmtInitBalance();
 void mgmtCleanupBalance();

src/system/detail/src/mgmtDnode.c

@@ -389,3 +389,119 @@ int mgmtRetrieveConfigs(SShowObj *pShow, char *data, int rows, SConnObj *pConn)
   pShow->numOfReads += numOfRows;
   return numOfRows;
 }
+
+int mgmtGetVnodeMeta(SMeterMeta *pMeta, SShowObj *pShow, SConnObj *pConn) {
+  int cols = 0;
+
+  if (strcmp(pConn->pAcct->user, "root") != 0) return TSDB_CODE_NO_RIGHTS;
+
+  SSchema *pSchema = tsGetSchema(pMeta);
+
+  pShow->bytes[cols] = 4;
+  pSchema[cols].type = TSDB_DATA_TYPE_INT;
+  strcpy(pSchema[cols].name, "vnode");
+  pSchema[cols].bytes = htons(pShow->bytes[cols]);
+  cols++;
+
+  pShow->bytes[cols] = 4;
+  pSchema[cols].type = TSDB_DATA_TYPE_INT;
+  strcpy(pSchema[cols].name, "vgid");
+  pSchema[cols].bytes = htons(pShow->bytes[cols]);
+  cols++;
+
+  pShow->bytes[cols] = 12;
+  pSchema[cols].type = TSDB_DATA_TYPE_BINARY;
+  strcpy(pSchema[cols].name, "status");
+  pSchema[cols].bytes = htons(pShow->bytes[cols]);
+  cols++;
+
+  pShow->bytes[cols] = 12;
+  pSchema[cols].type = TSDB_DATA_TYPE_BINARY;
+  strcpy(pSchema[cols].name, "sync status");
+  pSchema[cols].bytes = htons(pShow->bytes[cols]);
+  cols++;
+
+  pMeta->numOfColumns = htons(cols);
+  pShow->numOfColumns = cols;
+
+  pShow->offset[0] = 0;
+  for (int i = 1; i < cols; ++i) pShow->offset[i] = pShow->offset[i - 1] + pShow->bytes[i - 1];
+
+  // TODO: if other thread drop dnode ????
+  SDnodeObj *pDnode = NULL;
+  if (pShow->payloadLen > 0 ) {
+    uint32_t ip = ip2uint(pShow->payload);
+    pDnode = mgmtGetDnode(ip);
+    if (NULL == pDnode) {
+      return TSDB_CODE_NODE_OFFLINE;
+    }
+    
+    pShow->numOfRows = pDnode->openVnodes;
+    pShow->pNode     = pDnode;
+    
+  } else {
+    while (true) {
+      pShow->pNode = mgmtGetNextDnode(pShow, (SDnodeObj **)&pDnode);
+      if (pDnode == NULL) break;
+      pShow->numOfRows += pDnode->openVnodes;
+
+      if (0 == pShow->numOfRows) return TSDB_CODE_NODE_OFFLINE;      
+    }
+
+    pShow->pNode = NULL;
+  } 
+
+  pShow->rowSize = pShow->offset[cols - 1] + pShow->bytes[cols - 1];
+
+  return 0;
+}
+
+int mgmtRetrieveVnodes(SShowObj *pShow, char *data, int rows, SConnObj *pConn) {
+  int        numOfRows = 0;
+  SDnodeObj *pDnode = NULL;
+  char *     pWrite;
+  int        cols = 0;
+  char       ipstr[20];
+
+  if (0 == rows) return 0;
+
+  if (pShow->payloadLen) {
+    // output the vnodes info of the designated dnode. And output all vnodes of this dnode, instead of rows (max 100)
+    pDnode = (SDnodeObj *)(pShow->pNode);
+    if (pDnode != NULL) {
+      SVnodeLoad* pVnode;
+      for (int i = 0 ; i < TSDB_MAX_VNODES; i++) {
+        pVnode = &pDnode->vload[i];
+        if (0 == pVnode->vgId) {
+          continue;
+        }
+        
+        pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
+        *(uint32_t *)pWrite = pVnode->vnode;
+        cols++;
+        
+        pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
+        *(uint32_t *)pWrite = pVnode->vgId;
+        cols++;
+        
+        pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
+        strcpy(pWrite, taosGetVnodeStatusStr(pVnode->status));
+        cols++;
+        
+        pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
+        strcpy(pWrite, taosGetVnodeSyncStatusStr(pVnode->syncStatus));
+        cols++;
+        
+        numOfRows++;
+      }
+    }
+  } else {
+    // TODO: output all vnodes of all dnodes
+    numOfRows = 0;
+  }
+  
+  pShow->numOfReads += numOfRows;
+  return numOfRows;
+}
+
+

src/system/detail/src/mgmtMeter.c

@@ -675,7 +675,7 @@ int mgmtCreateMeter(SDbObj *pDb, SCreateTableMsg *pCreate) {
 
   // send create message to the selected vnode servers
   if (pCreate->numOfTags == 0) {
-    mTrace("table:%s, send create msg to dnode, vgId:%d, sid:%d, vnode:%d",
+    mTrace("table:%s, send create table msg to dnode, vgId:%d, sid:%d, vnode:%d",
            pMeter->meterId, pMeter->gid.vgId, pMeter->gid.sid, pVgroup->vnodeGid[0].vnode);
 
     grantAddTimeSeries(pMeter->numOfColumns - 1);

src/system/detail/src/mgmtShell.c

@@ -788,12 +788,14 @@ int (*mgmtGetMetaFp[])(SMeterMeta *pMeta, SShowObj *pShow, SConnObj *pConn) = {
     mgmtGetAcctMeta,   mgmtGetUserMeta,   mgmtGetDbMeta,     mgmtGetMeterMeta,  mgmtGetDnodeMeta,
     mgmtGetMnodeMeta,  mgmtGetVgroupMeta, mgmtGetMetricMeta, mgmtGetModuleMeta, mgmtGetQueryMeta,
     mgmtGetStreamMeta, mgmtGetConfigMeta, mgmtGetConnsMeta,  mgmtGetScoresMeta, grantGetGrantsMeta,
+    mgmtGetVnodeMeta,
 };
 
 int (*mgmtRetrieveFp[])(SShowObj *pShow, char *data, int rows, SConnObj *pConn) = {
     mgmtRetrieveAccts,   mgmtRetrieveUsers,   mgmtRetrieveDbs,     mgmtRetrieveMeters,  mgmtRetrieveDnodes,
     mgmtRetrieveMnodes,  mgmtRetrieveVgroups, mgmtRetrieveMetrics, mgmtRetrieveModules, mgmtRetrieveQueries,
     mgmtRetrieveStreams, mgmtRetrieveConfigs, mgmtRetrieveConns,   mgmtRetrieveScores,  grantRetrieveGrants,
+    mgmtRetrieveVnodes,
 };
 
 int mgmtProcessShowMsg(char *pMsg, int msgLen, SConnObj *pConn) {

src/system/detail/src/vnodeQueryImpl.c

@@ -2952,11 +2952,11 @@ static int32_t vnodeOpenVnodeDBFiles(SQInfo *pQInfo, SQueryFileInfo *pVnodeFiles
   pVnodeFiles->dataFd = open(pVnodeFiles->dataFilePath, O_RDONLY);
   pVnodeFiles->lastFd = open(pVnodeFiles->lastFilePath, O_RDONLY);
 
-  if (stat(pVnodeFiles->dataFilePath, &fstat) < 0) return -1;
-  pVnodeFiles->dataFileSize = fstat.st_size;
-
-  if (stat(pVnodeFiles->lastFilePath, &fstat) < 0) return -1;
-  pVnodeFiles->lastFileSize = fstat.st_size;
+//  if (stat(pVnodeFiles->dataFilePath, &fstat) < 0) return -1;
+//  pVnodeFiles->dataFileSize = fstat.st_size;
+//
+//  if (stat(pVnodeFiles->lastFilePath, &fstat) < 0) return -1;
+//  pVnodeFiles->lastFileSize = fstat.st_size;
 
 #if DEFAULT_IO_ENGINE == IO_ENGINE_MMAP
   /* enforce kernel to preload data when the file is mapping */

src/system/detail/src/vnodeRead.c

@@ -483,13 +483,9 @@ void vnodeFreeQInfo(void *param, bool decQueryRef) {
   }
 
   tfree(pQuery->pGroupbyExpr);
-
   dTrace("QInfo:%p vid:%d sid:%d meterId:%s, QInfo is freed", pQInfo, pObj->vnode, pObj->sid, pObj->meterId);
 
-  /*
-   * destory signature, in order to avoid the query process pass the object
-   * safety check
-   */
+  //destroy signature, in order to avoid the query process pass the object safety check
   memset(pQInfo, 0, sizeof(SQInfo));
   tfree(pQInfo);
 }

src/util/src/tglobalcfg.c

@@ -644,6 +644,7 @@ static void doInitGlobalConfig() {
   tsInitConfigOption(cfg++, "defaultPass", tsDefaultPass, TSDB_CFG_VTYPE_STRING,
                      TSDB_CFG_CTYPE_B_CONFIG | TSDB_CFG_CTYPE_B_CLIENT | TSDB_CFG_CTYPE_B_NOT_PRINT,
                      0, 0, TSDB_PASSWORD_LEN, TSDB_CFG_UTYPE_NONE);
+  
   // socket type, udp by default
   tsInitConfigOption(cfg++, "sockettype", tsSocketType, TSDB_CFG_VTYPE_STRING,
                      TSDB_CFG_CTYPE_B_CONFIG | TSDB_CFG_CTYPE_B_CLIENT | TSDB_CFG_CTYPE_B_SHOW,

src/util/src/ttokenizer.c

@@ -224,6 +224,7 @@ static SKeyword keywordTable[] = {
     {"METRICS",      TK_METRICS},
     {"STABLE",       TK_STABLE},
     {"FILE",         TK_FILE},
+    {"VNODES",       TK_VNODES},
 };
 
 /* This is the hash table */