[td-1747]

src/client/inc/tscUtil.h

@@ -231,10 +231,11 @@ int  tscGetTableMeta(SSqlObj* pSql, STableMetaInfo* pTableMetaInfo);
 int  tscGetMeterMetaEx(SSqlObj* pSql, STableMetaInfo* pTableMetaInfo, bool createIfNotExists);
 
 void tscResetForNextRetrieve(SSqlRes* pRes);
-
-void tscAddTimestampColumn(SQueryInfo* pQueryInfo, int16_t functionId, int16_t tableIndex);
 void tscDoQuery(SSqlObj* pSql);
 
+SVgroupsInfo* tscVgroupInfoClone(SVgroupsInfo *pInfo);
+void* tscVgroupInfoClear(SVgroupsInfo *pInfo);
+void tscSCMVgroupInfoCopy(SCMVgroupInfo* dst, const SCMVgroupInfo* src);
 /**
  * The create object function must be successful expect for the out of memory issue.
  *

src/client/inc/tsclient.h

@@ -443,6 +443,7 @@ void tscPartiallyFreeSqlObj(SSqlObj *pSql);
  */
 void tscFreeSqlObj(SSqlObj *pSql);
 void tscFreeRegisteredSqlObj(void *pSql);
+void tscFreeTableMetaHelper(void *pTableMeta);
 
 void tscCloseTscObj(STscObj *pObj);
 

src/client/src/tscServer.c

@@ -124,9 +124,11 @@ static void tscUpdateVgroupInfo(SSqlObj *pObj, SRpcEpSet *pEpSet) {
   pVgroupInfo->inUse = pEpSet->inUse;
   pVgroupInfo->numOfEps = pEpSet->numOfEps;
   for (int32_t i = 0; i < pVgroupInfo->numOfEps; i++) {
-    tstrncpy(pVgroupInfo->epAddr[i].fqdn, pEpSet->fqdn[i], TSDB_FQDN_LEN);
+    taosTFree(pVgroupInfo->epAddr[i].fqdn);
+    pVgroupInfo->epAddr[i].fqdn = strndup(pEpSet->fqdn[i], tListLen(pEpSet->fqdn[i]));
     pVgroupInfo->epAddr[i].port = pEpSet->port[i];
   }
+
   tscDebug("after: EndPoint in use: %d", pVgroupInfo->inUse);
   taosCorEndWrite(&pVgroupInfo->version);
 }
@@ -1852,15 +1854,15 @@ int tscProcessSTableVgroupRsp(SSqlObj *pSql) {
       //just init, no need to lock
       SCMVgroupInfo *pVgroups = &pInfo->vgroupList->vgroups[j];
 
-      SCMVgroupMsg *vgroupMsg = &pVgroupMsg->vgroups[j];
-      pVgroups->vgId = htonl(vgroupMsg->vgId);
-      pVgroups->numOfEps = vgroupMsg->numOfEps;
+      SCMVgroupMsg *vmsg = &pVgroupMsg->vgroups[j];
+      pVgroups->vgId = htonl(vmsg->vgId);
+      pVgroups->numOfEps = vmsg->numOfEps;
 
       assert(pVgroups->numOfEps >= 1 && pVgroups->vgId >= 1);
 
       for (int32_t k = 0; k < pVgroups->numOfEps; ++k) {
-        pVgroups->epAddr[k].port = htons(vgroupMsg->epAddr[k].port);
-        pVgroups->epAddr[k].fqdn = strndup(vgroupMsg->epAddr[k].fqdn, tListLen(vgroupMsg->epAddr[k].fqdn));
+        pVgroups->epAddr[k].port = htons(vmsg->epAddr[k].port);
+        pVgroups->epAddr[k].fqdn = strndup(vmsg->epAddr[k].fqdn, tListLen(vmsg->epAddr[k].fqdn));
       }
     }
 

src/client/src/tscStream.c

@@ -168,7 +168,7 @@ static void tscProcessStreamQueryCallback(void *param, TAOS_RES *tres, int numOf
 
     STableMetaInfo* pTableMetaInfo = tscGetTableMetaInfoFromCmd(&pStream->pSql->cmd, 0, 0);
     taosCacheRelease(tscMetaCache, (void**)&(pTableMetaInfo->pTableMeta), true);
-    taosTFree(pTableMetaInfo->vgroupList);
+    pTableMetaInfo->vgroupList = tscVgroupInfoClear(pTableMetaInfo->vgroupList);
 
     tscSetRetryTimer(pStream, pStream->pSql, retryDelay);
     return;
@@ -275,7 +275,7 @@ static void tscProcessStreamRetrieveResult(void *param, TAOS_RES *res, int numOf
     tscFreeSqlResult(pSql);
     taosTFree(pSql->pSubs);
     pSql->subState.numOfSub = 0;
-    taosTFree(pTableMetaInfo->vgroupList);
+    pTableMetaInfo->vgroupList = tscVgroupInfoClear(pTableMetaInfo->vgroupList);
     tscSetNextLaunchTimer(pStream, pSql);
   }
 }

src/client/src/tscSubquery.c

@@ -449,7 +449,7 @@ void tscBuildVgroupTableInfo(SSqlObj* pSql, STableMetaInfo* pTableMetaInfo, SArr
       SVgroupTableInfo info = {{0}};
       for (int32_t m = 0; m < pvg->numOfVgroups; ++m) {
         if (tt->vgId == pvg->vgroups[m].vgId) {
-          info.vgInfo = pvg->vgroups[m];
+          tscSCMVgroupInfoCopy(&info.vgInfo, &pvg->vgroups[m]);
           break;
         }
       }
@@ -1645,9 +1645,9 @@ static void tscAllDataRetrievedFromDnode(SRetrieveSupport *trsupport, SSqlObj* p
   
   // data in from current vnode is stored in cache and disk
   uint32_t numOfRowsFromSubquery = (uint32_t)(trsupport->pExtMemBuffer[idx]->numOfTotalElems + trsupport->localBuffer->num);
+  SVgroupsInfo* vgroupsInfo = pTableMetaInfo->vgroupList;
   tscDebug("%p sub:%p all data retrieved from ep:%s, vgId:%d, numOfRows:%d, orderOfSub:%d", pParentSql, pSql,
-        pTableMetaInfo->vgroupList->vgroups[0].epAddr[0].fqdn, pTableMetaInfo->vgroupList->vgroups[0].vgId,
-        numOfRowsFromSubquery, idx);
+           vgroupsInfo->vgroups[0].epAddr[0].fqdn, vgroupsInfo->vgroups[0].vgId, numOfRowsFromSubquery, idx);
   
   tColModelCompact(pDesc->pColumnModel, trsupport->localBuffer, pDesc->pColumnModel->capacity);
 

src/client/src/tscSystem.c

@@ -77,6 +77,7 @@ int32_t tscInitRpc(const char *user, const char *secretEncrypt, void **pDnodeCon
   return 0;
 }
 
+
 void taos_init_imp(void) {
   char temp[128];
   
@@ -124,8 +125,9 @@ void taos_init_imp(void) {
 
   double factor = (tscEmbedded == 0)? 2.0:4.0;
   tscNumOfThreads = (int)(tsNumOfCores * tsNumOfThreadsPerCore / factor);
-
-  if (tscNumOfThreads < 2) tscNumOfThreads = 2;
+  if (tscNumOfThreads < 2) {
+    tscNumOfThreads = 2;
+  }
 
   tscQhandle = taosInitScheduler(queueSize, tscNumOfThreads, "tsc");
   if (NULL == tscQhandle) {
@@ -140,7 +142,7 @@ void taos_init_imp(void) {
 
   int64_t refreshTime = 10; // 10 seconds by default
   if (tscMetaCache == NULL) {
-    tscMetaCache = taosCacheInit(TSDB_DATA_TYPE_BINARY, refreshTime, false, NULL, "tableMeta");
+    tscMetaCache = taosCacheInit(TSDB_DATA_TYPE_BINARY, refreshTime, false, tscFreeTableMetaHelper, "tableMeta");
     tscObjCache = taosCacheInit(TSDB_CACHE_PTR_KEY, refreshTime / 2, false, tscFreeRegisteredSqlObj, "sqlObj");
   }
 

src/client/src/tscUtil.c

@@ -115,7 +115,7 @@ bool tscIsTwoStageSTableQuery(SQueryInfo* pQueryInfo, int32_t tableIndex) {
   
   // for select query super table, the super table vgroup list can not be null in any cases.
   if (pQueryInfo->command == TSDB_SQL_SELECT && UTIL_TABLE_IS_SUPER_TABLE(pTableMetaInfo)) {
-    assert(pTableMetaInfo->vgroupList != NULL);
+//    assert(pTableMetaInfo->vgroupList != NULL);  // if retrieve vgroupInfo failed, the value may be null
   }
   
   if ((pQueryInfo->type & TSDB_QUERY_TYPE_FREE_RESOURCE) == TSDB_QUERY_TYPE_FREE_RESOURCE) {
@@ -408,6 +408,24 @@ void tscFreeRegisteredSqlObj(void *pSql) {
   }
 }
 
+void tscFreeTableMetaHelper(void *pTableMeta) {
+  STableMeta* p = (STableMeta*) pTableMeta;
+
+  int32_t numOfEps = p->vgroupInfo.numOfEps;
+  assert(numOfEps >= 0 && numOfEps <= TSDB_MAX_REPLICA);
+
+  for(int32_t i = 0; i < numOfEps; ++i) {
+    taosTFree(p->vgroupInfo.epAddr[i].fqdn);
+  }
+
+  int32_t numOfEps1 = p->corVgroupInfo.numOfEps;
+  assert(numOfEps1 >= 0 && numOfEps1 <= TSDB_MAX_REPLICA);
+
+  for(int32_t i = 0; i < numOfEps1; ++i) {
+    taosTFree(p->corVgroupInfo.epAddr[i].fqdn);
+  }
+}
+
 void tscFreeSqlObj(SSqlObj* pSql) {
   if (pSql == NULL || pSql->signature != pSql) {
     return;
@@ -1682,8 +1700,14 @@ void tscClearSubqueryInfo(SSqlCmd* pCmd) {
 
 void tscFreeVgroupTableInfo(SArray* pVgroupTables) {
   if (pVgroupTables != NULL) {
-    for (size_t i = 0; i < taosArrayGetSize(pVgroupTables); i++) {
+    size_t num = taosArrayGetSize(pVgroupTables);
+    for (size_t i = 0; i < num; i++) {
       SVgroupTableInfo* pInfo = taosArrayGet(pVgroupTables, i);
+
+      for(int32_t j = 0; j < pInfo->vgInfo.numOfEps; ++j) {
+        taosTFree(pInfo->vgInfo.epAddr[j].fqdn);
+      }
+
       taosArrayDestroy(pInfo->itemList);
     }
     taosArrayDestroy(pVgroupTables);
@@ -1695,6 +1719,7 @@ void clearAllTableMetaInfo(SQueryInfo* pQueryInfo, const char* address, bool rem
   
   for(int32_t i = 0; i < pQueryInfo->numOfTables; ++i) {
     STableMetaInfo* pTableMetaInfo = tscGetMetaInfo(pQueryInfo, i);
+
     tscFreeVgroupTableInfo(pTableMetaInfo->pVgroupTables);
     tscClearTableMetaInfo(pTableMetaInfo, removeFromCache);
     free(pTableMetaInfo);
@@ -1727,13 +1752,7 @@ STableMetaInfo* tscAddTableMetaInfo(SQueryInfo* pQueryInfo, const char* name, ST
   pTableMetaInfo->pTableMeta = pTableMeta;
   
   if (vgroupList != NULL) {
-    size_t size = sizeof(SVgroupsInfo) + sizeof(SCMVgroupInfo) * vgroupList->numOfVgroups;
-    pTableMetaInfo->vgroupList = malloc(size);
-    if (pTableMetaInfo->vgroupList == NULL) {
-      return NULL;
-    }
-
-    memcpy(pTableMetaInfo->vgroupList, vgroupList, size);
+    pTableMetaInfo->vgroupList = tscVgroupInfoClone(vgroupList);
   }
 
   pTableMetaInfo->tagColList = taosArrayInit(4, POINTER_BYTES);
@@ -1762,8 +1781,7 @@ void tscClearTableMetaInfo(STableMetaInfo* pTableMetaInfo, bool removeFromCache)
     taosCacheRelease(tscMetaCache, (void**)&(pTableMetaInfo->pTableMeta), removeFromCache);
   }
 
-  taosTFree(pTableMetaInfo->vgroupList);
-  
+  pTableMetaInfo->vgroupList = tscVgroupInfoClear(pTableMetaInfo->vgroupList);
   tscColumnListDestroy(pTableMetaInfo->tagColList);
   pTableMetaInfo->tagColList = NULL;
 }
@@ -2403,3 +2421,58 @@ void tscClearSqlOwner(SSqlObj* pSql) {
   assert(taosCheckPthreadValid(pSql->owner));
   atomic_store_64(&pSql->owner, 0);
 }
+
+SVgroupsInfo* tscVgroupInfoClone(SVgroupsInfo *vgroupList) {
+  if (vgroupList == NULL) {
+    return NULL;
+  }
+
+  size_t size = sizeof(SVgroupsInfo) + sizeof(SCMVgroupInfo) * vgroupList->numOfVgroups;
+  SVgroupsInfo* pNew = calloc(1, size);
+  if (pNew == NULL) {
+    return NULL;
+  }
+
+  pNew->numOfVgroups = vgroupList->numOfVgroups;
+
+  for(int32_t i = 0; i < vgroupList->numOfVgroups; ++i) {
+    SCMVgroupInfo* pNewVInfo = &pNew->vgroups[i];
+
+    SCMVgroupInfo* pvInfo = &vgroupList->vgroups[i];
+    pNewVInfo->vgId = pvInfo->vgId;
+    pNewVInfo->numOfEps = pvInfo->numOfEps;
+
+    for(int32_t j = 0; j < pvInfo->numOfEps; ++j) {
+      pNewVInfo->epAddr[j].fqdn = strdup(pvInfo->epAddr[j].fqdn);
+      pNewVInfo->epAddr[j].port = pvInfo->epAddr[j].port;
+    }
+  }
+
+  return pNew;
+}
+
+void* tscVgroupInfoClear(SVgroupsInfo *vgroupList) {
+  if (vgroupList == NULL) {
+    return NULL;
+  }
+
+  for(int32_t i = 0; i < vgroupList->numOfVgroups; ++i) {
+    SCMVgroupInfo* pVgroupInfo = &vgroupList->vgroups[i];
+
+    for(int32_t j = 0; j < pVgroupInfo->numOfEps; ++j) {
+      taosTFree(pVgroupInfo->epAddr[j].fqdn);
+    }
+  }
+
+  taosTFree(vgroupList);
+  return NULL;
+}
+
+void tscSCMVgroupInfoCopy(SCMVgroupInfo* dst, const SCMVgroupInfo* src) {
+  dst->vgId = src->vgId;
+  dst->numOfEps = src->numOfEps;
+  for(int32_t i = 0; i < dst->numOfEps; ++i) {
+    dst->epAddr[i].port = src->epAddr[i].port;
+    dst->epAddr[i].fqdn = strdup(src->epAddr[i].fqdn);
+  }
+}

src/mnode/src/mnodeTable.c

@@ -1472,7 +1472,7 @@ static int32_t mnodeProcessSuperTableVgroupMsg(SMnodeMsg *pMsg) {
   int32_t numOfTable = htonl(pInfo->numOfTables);
 
   // reserve space
-  int32_t contLen = sizeof(SCMSTableVgroupRspMsg) + 32 * sizeof(SCMVgroupInfo) + sizeof(SVgroupsMsg); 
+  int32_t contLen = sizeof(SCMSTableVgroupRspMsg) + 32 * sizeof(SCMVgroupMsg) + sizeof(SVgroupsMsg);
   for (int32_t i = 0; i < numOfTable; ++i) {
     char *stableName = (char*)pInfo + sizeof(SCMSTableVgroupMsg) + (TSDB_TABLE_FNAME_LEN) * i;
     SSuperTableObj *pTable = mnodeGetSuperTable(stableName);
@@ -1521,6 +1521,8 @@ static int32_t mnodeProcessSuperTableVgroupMsg(SMnodeMsg *pMsg) {
         if (pVgroup == NULL) continue;
 
         pVgroupMsg->vgroups[vgSize].vgId = htonl(pVgroup->vgId);
+        pVgroupMsg->vgroups[vgSize].numOfEps = 0;
+
         for (int32_t vn = 0; vn < pVgroup->numOfVnodes; ++vn) {
           SDnodeObj *pDnode = pVgroup->vnodeGid[vn].pDnode;
           if (pDnode == NULL) break;