diff --git a/source/dnode/mnode/impl/src/mndSubscribe.c b/source/dnode/mnode/impl/src/mndSubscribe.c
index 3f310ee9c09753d143e5c44e33506651c2765881..10e520d9ec49a53e5fcedcf668a40732480aa75b 100644
--- a/source/dnode/mnode/impl/src/mndSubscribe.c
+++ b/source/dnode/mnode/impl/src/mndSubscribe.c
@@ -356,31 +356,44 @@ static int32_t mndDoRebalance(SMnode *pMnode, const SMqRebInputObj *pInput, SMqR
       taosArrayPush(pConsumerEp->vgs, &pRebVg->pVgEp);
       pRebVg->newConsumerId = pConsumerEp->consumerId;
       taosArrayPush(pOutput->rebVgs, pRebVg);
-      mInfo("mq rebalance: add vgId:%d to consumer:%" PRId64 ",(second scan)", pRebVg->pVgEp->vgId,
+      mInfo("mq rebalance: add vgId:%d to consumer:%" PRId64 " (second scan) (not enough)", pRebVg->pVgEp->vgId,
             pConsumerEp->consumerId);
     }
   }
 
+  ASSERT(pIter == NULL);
   // 7. handle unassigned vg
   if (taosHashGetSize(pOutput->pSub->consumerHash) != 0) {
     // if has consumer, assign all left vg
     while (1) {
+      SMqConsumerEp *pConsumerEp = NULL;
       pRemovedIter = taosHashIterate(pHash, pRemovedIter);
-      if (pRemovedIter == NULL) break;
-      pIter = taosHashIterate(pOutput->pSub->consumerHash, pIter);
-      ASSERT(pIter);
+      if (pRemovedIter == NULL) {
+        if (pIter != NULL) {
+          taosHashCancelIterate(pOutput->pSub->consumerHash, pIter);
+          pIter = NULL;
+        }
+        break;
+      }
+      while (1) {
+        pIter = taosHashIterate(pOutput->pSub->consumerHash, pIter);
+        ASSERT(pIter);
+        pConsumerEp = (SMqConsumerEp *)pIter;
+        ASSERT(pConsumerEp->consumerId > 0);
+        if (taosArrayGetSize(pConsumerEp->vgs) == minVgCnt) {
+          break;
+        }
+      }
       pRebVg = (SMqRebOutputVg *)pRemovedIter;
-      SMqConsumerEp *pConsumerEp = (SMqConsumerEp *)pIter;
-      ASSERT(pConsumerEp->consumerId > 0);
       taosArrayPush(pConsumerEp->vgs, &pRebVg->pVgEp);
       pRebVg->newConsumerId = pConsumerEp->consumerId;
       if (pRebVg->newConsumerId == pRebVg->oldConsumerId) {
-        mInfo("mq rebalance: skip vg %d for same consumer:%" PRId64 ",(second scan)", pRebVg->pVgEp->vgId,
+        mInfo("mq rebalance: skip vg %d for same consumer:%" PRId64 " (second scan)", pRebVg->pVgEp->vgId,
               pConsumerEp->consumerId);
         continue;
       }
       taosArrayPush(pOutput->rebVgs, pRebVg);
-      mInfo("mq rebalance: add vgId:%d to consumer:%" PRId64 ",(second scan)", pRebVg->pVgEp->vgId,
+      mInfo("mq rebalance: add vgId:%d to consumer:%" PRId64 " (second scan) (unassigned)", pRebVg->pVgEp->vgId,
             pConsumerEp->consumerId);
     }
   } else {
@@ -571,7 +584,7 @@ static int32_t mndProcessRebalanceReq(SRpcMsg *pMsg) {
       SMqTopicObj *pTopic = mndAcquireTopic(pMnode, topic);
       /*ASSERT(pTopic);*/
       if (pTopic == NULL) {
-        mError("rebalance %s failed since topic %s was dropped, abort", pRebInfo->key, topic);
+        mError("mq rebalance %s failed since topic %s not exist, abort", pRebInfo->key, topic);
         continue;
       }
       taosRLockLatch(&pTopic->lock);
@@ -601,7 +614,7 @@ static int32_t mndProcessRebalanceReq(SRpcMsg *pMsg) {
 
     // TODO replace assert with error check
     if (mndPersistRebResult(pMnode, pMsg, &rebOutput) < 0) {
-      mError("persist rebalance output error, possibly vnode splitted or dropped");
+      mError("mq rebalance persist rebalance output error, possibly vnode splitted or dropped");
     }
     taosArrayDestroy(pRebInfo->lostConsumers);
     taosArrayDestroy(pRebInfo->newConsumers);
diff --git a/source/libs/executor/src/scanoperator.c b/source/libs/executor/src/scanoperator.c
index 02089d9fecbde6074c574af601c0104751839357..8c4fbe79710a65941c49f87422a0501bb5af6c4f 100644
--- a/source/libs/executor/src/scanoperator.c
+++ b/source/libs/executor/src/scanoperator.c
@@ -1175,19 +1175,19 @@ static void checkUpdateData(SStreamScanInfo* pInfo, bool invertible, SSDataBlock
   SColumnInfoData* pColDataInfo = taosArrayGet(pBlock->pDataBlock, pInfo->primaryTsIndex);
   ASSERT(pColDataInfo->info.type == TSDB_DATA_TYPE_TIMESTAMP);
   TSKEY* tsCol = (TSKEY*)pColDataInfo->pData;
+  bool   tableInserted = updateInfoIsTableInserted(pInfo->pUpdateInfo, pBlock->info.uid);
   for (int32_t rowId = 0; rowId < pBlock->info.rows; rowId++) {
     SResultRowInfo dumyInfo;
     dumyInfo.cur.pageId = -1;
     bool        isClosed = false;
     STimeWindow win = {.skey = INT64_MIN, .ekey = INT64_MAX};
-    if (isOverdue(tsCol[rowId], &pInfo->twAggSup)) {
+    if (tableInserted && isOverdue(tsCol[rowId], &pInfo->twAggSup)) {
       win = getActiveTimeWindow(NULL, &dumyInfo, tsCol[rowId], &pInfo->interval, TSDB_ORDER_ASC);
       isClosed = isCloseWindow(&win, &pInfo->twAggSup);
     }
-    bool inserted = updateInfoIsTableInserted(pInfo->pUpdateInfo, pBlock->info.uid);
     // must check update info first.
     bool update = updateInfoIsUpdated(pInfo->pUpdateInfo, pBlock->info.uid, tsCol[rowId]);
-    bool closedWin = isClosed && inserted && isSignleIntervalWindow(pInfo) &&
+    bool closedWin = isClosed && isSignleIntervalWindow(pInfo) &&
                      isDeletedWindow(&win, pBlock->info.groupId, pInfo->sessionSup.pIntervalAggSup);
     if ((update || closedWin) && out) {
       appendOneRow(pInfo->pUpdateDataRes, tsCol + rowId, tsCol + rowId, &pBlock->info.uid);