[TD-225] release the ref for tableMeta if insert success.

src/client/src/tscSubquery.c

@@ -2279,7 +2279,6 @@ static void multiVnodeInsertFinalize(void* param, TAOS_RES* tres, int numOfRows)
  */
 int32_t tscHandleInsertRetry(SSqlObj* pParent, SSqlObj* pSql) {
   assert(pSql != NULL && pSql->param != NULL);
-//  SSqlCmd* pCmd = &pSql->cmd;
   SSqlRes* pRes = &pSql->res;
 
   SInsertSupporter* pSupporter = (SInsertSupporter*) pSql->param;
@@ -2288,9 +2287,6 @@ int32_t tscHandleInsertRetry(SSqlObj* pParent, SSqlObj* pSql) {
   STableDataBlocks* pTableDataBlock = taosArrayGetP(pParent->cmd.pDataBlocks, pSupporter->index);
   int32_t code = tscCopyDataBlockToPayload(pSql, pTableDataBlock);
 
-  // free the data block created from insert sql string
-//  pCmd->pDataBlocks = tscDestroyBlockArrayList(pParent->cmd.pDataBlocks);
-
   if ((pRes->code = code)!= TSDB_CODE_SUCCESS) {
     tscQueueAsyncRes(pSql);
     return code;  // here the pSql may have been released already.

src/client/src/tscUtil.c

@@ -405,8 +405,12 @@ void tscResetSqlCmdObj(SSqlCmd* pCmd, bool removeFromCache) {
   pCmd->msgType   = 0;
   pCmd->parseFinished = 0;
   pCmd->autoCreated = 0;
-  pCmd->numOfTables = 0;
 
+  for(int32_t i = 0; i < pCmd->numOfTables; ++i) {
+    taosCacheRelease(tscMetaCache, (void**)&(pCmd->pTableMetaList[i]), false);
+  }
+
+  pCmd->numOfTables = 0;
   tfree(pCmd->pTableMetaList);
 
   pCmd->pTableBlockHashList = tscDestroyBlockHashTable(pCmd->pTableBlockHashList);