diff --git a/source/client/src/clientImpl.c b/source/client/src/clientImpl.c
index b9a00f4434..d77b8dcbb7 100644
--- a/source/client/src/clientImpl.c
+++ b/source/client/src/clientImpl.c
@@ -1068,6 +1068,7 @@ static int32_t createResultBlock(TAOS_RES* pRes, int32_t numOfRows, SSDataBlock*
     TAOS_ROW pRow = taos_fetch_row(pRes);
     if (NULL == pRow[0] || NULL == pRow[1] || NULL == pRow[2]) {
       tscError("invalid data from vnode");
+      blockDataDestroy(*pBlock);
       return TSDB_CODE_TSC_INTERNAL_ERROR;
     }
     int64_t ts = *(int64_t*)pRow[0];
@@ -1102,8 +1103,11 @@ void postSubQueryFetchCb(void* param, TAOS_RES* res, int32_t rowNum) {
   }
 
   SSDataBlock* pBlock = NULL;
-  if (TSDB_CODE_SUCCESS != createResultBlock(res, rowNum, &pBlock)) {
-    tscError("0x%" PRIx64 ", create result block failed,QID:0x%" PRIx64, pRequest->self, pRequest->requestId);
+  pRequest->code = createResultBlock(res, rowNum, &pBlock);
+  if (TSDB_CODE_SUCCESS != pRequest->code) {
+    tscError("0x%" PRIx64 ", create result block failed,QID:0x%" PRIx64 " %s", pRequest->self, pRequest->requestId,
+             tstrerror(pRequest->code));
+    returnToUser(pRequest);
     return;
   }
 
diff --git a/source/dnode/vnode/src/meta/metaQuery.c b/source/dnode/vnode/src/meta/metaQuery.c
index 725d16d86f..acee24e494 100644
--- a/source/dnode/vnode/src/meta/metaQuery.c
+++ b/source/dnode/vnode/src/meta/metaQuery.c
@@ -54,8 +54,8 @@ int metaGetTableEntryByVersion(SMetaReader *pReader, int64_t version, tb_uid_t u
   STbDbKey tbDbKey = {.version = version, .uid = uid};
 
   // query table.db
-  if (tdbTbGet(pMeta->pTbDb, &tbDbKey, sizeof(tbDbKey), &pReader->pBuf, &pReader->szBuf) < 0) {
-    return terrno = TSDB_CODE_PAR_TABLE_NOT_EXIST;
+  if ((code = tdbTbGet(pMeta->pTbDb, &tbDbKey, sizeof(tbDbKey), &pReader->pBuf, &pReader->szBuf)) < 0) {
+    return terrno = (TSDB_CODE_NOT_FOUND == code ? TSDB_CODE_PAR_TABLE_NOT_EXIST : code);
   }
 
   // decode the entry
@@ -98,8 +98,9 @@ int metaReaderGetTableEntryByUidCache(SMetaReader *pReader, tb_uid_t uid) {
   SMeta *pMeta = pReader->pMeta;
 
   SMetaInfo info;
-  if (metaGetInfo(pMeta, uid, &info, pReader) == TSDB_CODE_NOT_FOUND) {
-    return terrno = TSDB_CODE_PAR_TABLE_NOT_EXIST;
+  int32_t code = metaGetInfo(pMeta, uid, &info, pReader);
+  if (TSDB_CODE_SUCCESS != code) {
+    return terrno = (TSDB_CODE_NOT_FOUND == code ? TSDB_CODE_PAR_TABLE_NOT_EXIST : code);
   }
 
   return metaGetTableEntryByVersion(pReader, info.version, uid);
@@ -1584,10 +1585,9 @@ int32_t metaGetInfo(SMeta *pMeta, int64_t uid, SMetaInfo *pInfo, SMetaReader *pR
   }
 
   // search TDB
-  if (tdbTbGet(pMeta->pUidIdx, &uid, sizeof(uid), &pData, &nData) < 0) {
+  if ((code = tdbTbGet(pMeta->pUidIdx, &uid, sizeof(uid), &pData, &nData)) < 0) {
     // not found
     if (!lock) metaULock(pMeta);
-    code = TSDB_CODE_NOT_FOUND;
     goto _exit;
   }