diff --git a/src/system/detail/src/vnodeQueryImpl.c b/src/system/detail/src/vnodeQueryImpl.c
index 722266db2c..f12db0971e 100644
--- a/src/system/detail/src/vnodeQueryImpl.c
+++ b/src/system/detail/src/vnodeQueryImpl.c
@@ -399,7 +399,6 @@ static void doCloseQueryFiles(SQueryFilesInfo *pVnodeFileInfo) {
     assert(pVnodeFileInfo->current < pVnodeFileInfo->numOfFiles && pVnodeFileInfo->current >= 0);
 
     pVnodeFileInfo->headerFileSize = -1;
-
     doCloseQueryFileInfoFD(pVnodeFileInfo);
   }
 
@@ -458,11 +457,12 @@ static int vnodeGetCompBlockInfo(SMeterObj *pMeterObj, SQueryRuntimeEnv *pRuntim
   SHeaderFileInfo *pHeadeFileInfo = &pRuntimeEnv->vnodeFileInfo.pFileInfo[fileIndex];
 
   int64_t st = taosGetTimestampUs();
-
-  if (vnodeIsCompBlockInfoLoaded(pRuntimeEnv, pMeterObj, fileIndex)) {
+  
+  // if the corresponding data/header files are already closed, re-open them here
+  if (vnodeIsCompBlockInfoLoaded(pRuntimeEnv, pMeterObj, fileIndex) &&
+      pRuntimeEnv->vnodeFileInfo.current == fileIndex) {
     dTrace("QInfo:%p vid:%d sid:%d id:%s, fileId:%d compBlock info is loaded, not reload", GET_QINFO_ADDR(pQuery),
            pMeterObj->vnode, pMeterObj->sid, pMeterObj->meterId, pHeadeFileInfo->fileID);
-
     return pQuery->numOfBlocks;
   }
 
@@ -1057,7 +1057,7 @@ void savePointPosition(SPositionInfo *position, int32_t fileId, int32_t slot, in
   position->pos = pos;
 }
 
-bool isCacheBlockValid(SQuery *pQuery, SCacheBlock *pBlock, SMeterObj *pMeterObj) {
+bool isCacheBlockValid(SQuery *pQuery, SCacheBlock *pBlock, SMeterObj *pMeterObj, int32_t slot) {
   if (pMeterObj != pBlock->pMeterObj || pBlock->blockId > pQuery->blockId) {
     SMeterObj *pNewMeterObj = pBlock->pMeterObj;
     char *     id = (pNewMeterObj != NULL) ? pNewMeterObj->meterId : NULL;
@@ -1081,11 +1081,19 @@ bool isCacheBlockValid(SQuery *pQuery, SCacheBlock *pBlock, SMeterObj *pMeterObj
     dWarn(
         "QInfo:%p vid:%d sid:%d id:%s, cache block is empty. slot:%d first:%d, last:%d, numOfBlocks:%d,"
         "allocated but not write data yet.",
-        GET_QINFO_ADDR(pQuery), pMeterObj->vnode, pMeterObj->sid, pMeterObj->meterId, pQuery->slot, pQuery->firstSlot,
+        GET_QINFO_ADDR(pQuery), pMeterObj->vnode, pMeterObj->sid, pMeterObj->meterId, slot, pQuery->firstSlot,
         pQuery->currentSlot, pQuery->numOfBlocks);
 
     return false;
   }
+  
+  SCacheInfo* pCacheInfo = (SCacheInfo*) pMeterObj->pCache;
+  if (pCacheInfo->commitPoint == pMeterObj->pointsPerBlock && pQuery->slot == pCacheInfo->currentSlot) {
+    dWarn("QInfo:%p vid:%d sid:%d id:%s, cache block is committed, ignore. slot:%d first:%d, last:%d, numOfBlocks:%d",
+        GET_QINFO_ADDR(pQuery), pMeterObj->vnode, pMeterObj->sid, pMeterObj->meterId, slot, pQuery->firstSlot,
+         pQuery->currentSlot, pQuery->numOfBlocks);
+    return false;
+  }
 
   return true;
 }
@@ -1117,7 +1125,7 @@ SCacheBlock *getCacheDataBlock(SMeterObj *pMeterObj, SQueryRuntimeEnv *pRuntimeE
   }
 
   // block is empty or block does not belongs to current table, return NULL value
-  if (!isCacheBlockValid(pQuery, pBlock, pMeterObj)) {
+  if (!isCacheBlockValid(pQuery, pBlock, pMeterObj, slot)) {
     return NULL;
   }
 
@@ -1203,7 +1211,7 @@ SCacheBlock *getCacheDataBlock(SMeterObj *pMeterObj, SQueryRuntimeEnv *pRuntimeE
   pQuery->fileId = -1;
   pQuery->slot = slot;
 
-  if (!isCacheBlockValid(pQuery, pNewBlock, pMeterObj)) {
+  if (!isCacheBlockValid(pQuery, pNewBlock, pMeterObj, slot)) {
     return NULL;
   }
 
@@ -1621,6 +1629,11 @@ static void doCheckQueryCompleted(SQueryRuntimeEnv *pRuntimeEnv, TSKEY lastKey,
   if (pRuntimeEnv->scanFlag != MASTER_SCAN || (!isIntervalQuery(pQuery))) {
     return;
   }
+  
+  // no qualified results exist, abort check
+  if (pWindowResInfo->size == 0) {
+    return;
+  }
 
   // query completed
   if ((lastKey >= pQuery->ekey && QUERY_IS_ASC_QUERY(pQuery)) ||
@@ -4134,13 +4147,14 @@ static bool forwardQueryStartPosIfNeeded(SQInfo *pQInfo, STableQuerySupportObj *
 
           tw = win;
           int32_t startPos = getNextQualifiedWindow(pRuntimeEnv, &tw, pWindowResInfo, &blockInfo, primaryKey, searchFn);
-          assert(startPos > 0);
+          assert(startPos >= 0);
 
           pQuery->limit.offset -= 1;
   
           // set the abort info
           pQuery->pos = startPos;
           pQuery->lastKey = primaryKey[startPos];
+          pWindowResInfo->prevSKey = tw.skey;
           win = tw;
           continue;
         } else {
@@ -4176,6 +4190,8 @@ static bool forwardQueryStartPosIfNeeded(SQInfo *pQInfo, STableQuerySupportObj *
             // set the abort info
             pQuery->pos = QUERY_IS_ASC_QUERY(pQuery)? 0:blockInfo.size-1;
             pQuery->lastKey = QUERY_IS_ASC_QUERY(pQuery)? blockInfo.keyFirst:blockInfo.keyLast;
+            pWindowResInfo->prevSKey = n.skey;
+  
             win = n;
   
             if (pQuery->limit.offset == 0 && IS_DISK_DATA_BLOCK(pQuery)) {