[td-535]

src/client/src/tscAsync.c

@@ -443,15 +443,17 @@ void tscTableMetaCallBack(void *param, TAOS_RES *res, int code) {
   }
 
   if (pSql->pStream == NULL) {
-    // check if it is a sub-query of super table query first, if true, enter another routine
     SQueryInfo* pQueryInfo = tscGetQueryInfoDetail(pCmd, pCmd->clauseIndex);
-  
-    if ((pQueryInfo->type & TSDB_QUERY_TYPE_STABLE_SUBQUERY) == TSDB_QUERY_TYPE_STABLE_SUBQUERY) {
+
+    // check if it is a sub-query of super table query first, if true, enter another routine
+    if (TSDB_QUERY_HAS_TYPE(pQueryInfo->type, TSDB_QUERY_TYPE_STABLE_SUBQUERY)) {
+      tscTrace("%p update table meta in local cache, continue to process sql and send corresponding subquery", pSql);
+
       STableMetaInfo* pTableMetaInfo = tscGetMetaInfo(pQueryInfo, 0);
       if (pTableMetaInfo->pTableMeta == NULL){
         code = tscGetTableMeta(pSql, pTableMetaInfo);
         assert(code == TSDB_CODE_SUCCESS);      
-      }     
+      }
       
       assert((tscGetNumOfTags(pTableMetaInfo->pTableMeta) != 0) && pTableMetaInfo->vgroupIndex >= 0 && pSql->param != NULL);
 
@@ -461,32 +463,37 @@ void tscTableMetaCallBack(void *param, TAOS_RES *res, int code) {
       assert(pParObj->signature == pParObj && trs->subqueryIndex == pTableMetaInfo->vgroupIndex &&
           tscGetNumOfTags(pTableMetaInfo->pTableMeta) != 0);
 
-      tscTrace("%p get metricMeta during super table query successfully", pSql);      
-
-      code = tscGetSTableVgroupInfo(pSql, 0);
-      pRes->code = code;
-
-      if (code == TSDB_CODE_ACTION_IN_PROGRESS) return;
-    } else {  // normal async query continues
+      // NOTE: the vgroupInfo for the queried super table must be existed here.
+      assert(pTableMetaInfo->vgroupList != NULL);
+      if ((code = tscProcessSql(pSql)) == TSDB_CODE_SUCCESS) {
+        return;
+      }
+    } else {  // continue to process normal async query
       if (pCmd->parseFinished) {
-        tscTrace("%p re-send data to vnode in table Meta callback since sql parsed completed", pSql);
-        
+        tscTrace("%p update table meta in local cache, continue to process sql and send corresponding query", pSql);
+
         STableMetaInfo* pTableMetaInfo = tscGetTableMetaInfoFromCmd(pCmd, pCmd->clauseIndex, 0);
         code = tscGetTableMeta(pSql, pTableMetaInfo);
         assert(code == TSDB_CODE_SUCCESS);
-      
-        if (pTableMetaInfo->pTableMeta) {
-          // todo update the submit message according to the new table meta
-          // 1. table uid, 2. ip address
-          code = tscSendMsgToServer(pSql);
-          if (code == TSDB_CODE_SUCCESS) return;
+
+        // if failed to process sql, go to error handler
+        if ((code = tscProcessSql(pSql)) == TSDB_CODE_SUCCESS) {
+          return;
         }
+//          // todo update the submit message according to the new table meta
+//          // 1. table uid, 2. ip address
+//          code = tscSendMsgToServer(pSql);
+//          if (code == TSDB_CODE_SUCCESS) return;
+//        }
       } else {
+        tscTrace("%p continue parse sql after get table meta", pSql);
+
         code = tsParseSql(pSql, false);
-        if ((pQueryInfo->type & TSDB_QUERY_TYPE_STMT_INSERT) == TSDB_QUERY_TYPE_STMT_INSERT) {
+        if (TSDB_QUERY_HAS_TYPE(pQueryInfo->type, TSDB_QUERY_TYPE_STMT_INSERT)) {
           STableMetaInfo* pTableMetaInfo = tscGetTableMetaInfoFromCmd(pCmd, pCmd->clauseIndex, 0);
           code = tscGetTableMeta(pSql, pTableMetaInfo);
           assert(code == TSDB_CODE_SUCCESS && pTableMetaInfo->pTableMeta != NULL);
+
           (*pSql->fp)(pSql->param, pSql, code);
           return;
         }

src/client/src/tscServer.c

@@ -430,7 +430,7 @@ void tscKillSTableQuery(SSqlObj *pSql) {
 
     /*
      * here, we cannot set the command = TSDB_SQL_KILL_QUERY. Otherwise, it may cause
-     * sub-queries not correctly released and master sql object of metric query reaches an abnormal state.
+     * sub-queries not correctly released and master sql object of super table query reaches an abnormal state.
      */
     pSql->pSubs[i]->res.code = TSDB_CODE_QUERY_CANCELLED;
     //taosStopRpcConn(pSql->pSubs[i]->thandle);
@@ -564,7 +564,7 @@ static char *doSerializeTableInfo(SQueryTableMsg* pQueryMsg, SSqlObj *pSql, char
 
     pQueryMsg->numOfTables = htonl(1);  // set the number of tables
     pMsg += sizeof(STableIdInfo);
-  } else {
+  } else { // it is a subquery of the super table query, this IP info is acquired from vgroupInfo
     int32_t index = pTableMetaInfo->vgroupIndex;
     int32_t numOfVgroups = taosArrayGetSize(pTableMetaInfo->pVgroupTables);
     assert(index >= 0 && index < numOfVgroups);
@@ -1821,7 +1821,7 @@ int tscProcessTableMetaRsp(SSqlObj *pSql) {
     return TSDB_CODE_CLI_OUT_OF_MEMORY;
   }
 
-  tscTrace("%p recv table meta: %"PRId64 ", tid:%d, name:%s", pSql, pTableMeta->uid, pTableMeta->sid, pTableMetaInfo->name);
+  tscTrace("%p recv table meta, uid:%"PRId64 ", tid:%d, name:%s", pSql, pTableMeta->uid, pTableMeta->sid, pTableMetaInfo->name);
   free(pTableMeta);
   
   return TSDB_CODE_SUCCESS;
@@ -2388,56 +2388,26 @@ int tscGetMeterMetaEx(SSqlObj *pSql, STableMetaInfo *pTableMetaInfo, bool create
   return tscGetTableMeta(pSql, pTableMetaInfo);
 }
 
-/*
- * in handling the renew metermeta problem during insertion,
- *
- * If the meter is created on demand during insertion, the routine usually waits for a short
- * period to re-issue the getMeterMeta msg, in which makes a greater change that vnode has
- * successfully created the corresponding table.
- */
-static void tscWaitingForCreateTable(SSqlCmd *pCmd) {
-  if (pCmd->command == TSDB_SQL_INSERT) {
-    taosMsleep(50);  // todo: global config
-  }
-}
-
 /**
- * in renew metermeta, do not retrieve metadata in cache.
+ * retrieve table meta from mnode, and update the local table meta cache.
  * @param pSql          sql object
- * @param tableId       meter id
+ * @param tableId       table full name
  * @return              status code
  */
 int tscRenewMeterMeta(SSqlObj *pSql, char *tableId) {
-  int code = 0;
-
-  // handle table meta renew process
   SSqlCmd *pCmd = &pSql->cmd;
 
   SQueryInfo *    pQueryInfo = tscGetQueryInfoDetail(pCmd, 0);
   STableMetaInfo *pTableMetaInfo = tscGetMetaInfo(pQueryInfo, 0);
 
-  /*
-   * 1. only update the metermeta in force model metricmeta is not updated
-   * 2. if get metermeta failed, still get the metermeta
-   */
-  if (pTableMetaInfo->pTableMeta == NULL || !tscQueryOnSTable(pCmd)) {
-    STableMeta* pTableMeta = pTableMetaInfo->pTableMeta;
-    if (pTableMetaInfo->pTableMeta) {
-      tscTrace("%p update table meta, old: numOfTags:%d, numOfCols:%d, uid:%" PRId64 ", addr:%p", pSql,
-               tscGetNumOfTags(pTableMeta), tscGetNumOfColumns(pTableMeta), pTableMeta->uid, pTableMeta);
-    }
-
-    tscWaitingForCreateTable(pCmd);
-    taosCacheRelease(tscCacheHandle, (void **)&(pTableMetaInfo->pTableMeta), true);
-
-    code = getTableMetaFromMgmt(pSql, pTableMetaInfo);  // todo ??
-  } else {
-    tscTrace("%p metric query not update metric meta, numOfTags:%d, numOfCols:%d, uid:%" PRId64 ", addr:%p", pSql,
-             tscGetNumOfTags(pTableMetaInfo->pTableMeta), pCmd->numOfCols, pTableMetaInfo->pTableMeta->uid,
-             pTableMetaInfo->pTableMeta);
+  STableMeta* pTableMeta = pTableMetaInfo->pTableMeta;
+  if (pTableMetaInfo->pTableMeta) {
+    tscTrace("%p update table meta, old meta numOfTags:%d, numOfCols:%d, uid:%" PRId64 ", addr:%p", pSql,
+             tscGetNumOfTags(pTableMeta), tscGetNumOfColumns(pTableMeta), pTableMeta->uid, pTableMeta);
   }
 
-  return code;
+  taosCacheRelease(tscCacheHandle, (void **)&(pTableMetaInfo->pTableMeta), true);
+  return getTableMetaFromMgmt(pSql, pTableMetaInfo);
 }
 
 static bool allVgroupInfoRetrieved(SSqlCmd* pCmd, int32_t clauseIndex) {