diff --git a/source/dnode/vnode/src/tq/tq.c b/source/dnode/vnode/src/tq/tq.c
index a935eaf5f737d22be1ca792955c5ba44398411c3..3bcc141edc4ba837f2bb88cefdca665423516615 100644
--- a/source/dnode/vnode/src/tq/tq.c
+++ b/source/dnode/vnode/src/tq/tq.c
@@ -1322,13 +1322,14 @@ int32_t tqProcessTaskScanHistoryFinishRsp(STQ* pTq, SRpcMsg* pMsg) {
     return -1;
   }
 
-  tqDebug("s-task:%s scan-history finish rsp received from downstream task:0x%x", pTask->id.idStr, req.downstreamId);
-
   int32_t remain = atomic_sub_fetch_32(&pTask->notReadyTasks, 1);
   if (remain > 0) {
-    tqDebug("s-task:%s remain:%d not send finish rsp", pTask->id.idStr, remain);
+    tqDebug("s-task:%s scan-history finish rsp received from downstream task:0x%x, remain:%d not send finish rsp",
+            pTask->id.idStr, req.downstreamId, remain);
   } else {
-    tqDebug("s-task:%s all downstream tasks rsp scan-history completed msg", pTask->id.idStr);
+    tqDebug(
+        "s-task:%s scan-history finish rsp received from downstream task:0x%x, all downstream tasks rsp scan-history "
+        "completed msg", pTask->id.idStr, req.downstreamId);
     streamProcessScanHistoryFinishRsp(pTask);
   }
 
diff --git a/source/dnode/vnode/src/tsdb/tsdbRead2.c b/source/dnode/vnode/src/tsdb/tsdbRead2.c
index 7743c78fbccdf729feae31c4a52c55036e1f741c..d5d8ba130c632b0b50caa607ffcd7084b37cde28 100644
--- a/source/dnode/vnode/src/tsdb/tsdbRead2.c
+++ b/source/dnode/vnode/src/tsdb/tsdbRead2.c
@@ -2569,9 +2569,18 @@ static int32_t doLoadLastBlockSequentially(STsdbReader* pReader) {
 
     // load the last data block of current table
     STableBlockScanInfo* pScanInfo = *(STableBlockScanInfo**)pStatus->pTableIter;
+    if (pScanInfo == NULL) {
+      tsdbError("table Iter is null, invalid pScanInfo, try next table %s", pReader->idStr);
+      bool hasNexTable = moveToNextTable(pUidList, pStatus);
+      if (!hasNexTable) {
+        return TSDB_CODE_SUCCESS;
+      }
+
+      continue;
+    }
+
     if (pReader->pIgnoreTables && taosHashGet(*pReader->pIgnoreTables, &pScanInfo->uid, sizeof(pScanInfo->uid))) {
       // reset the index in last block when handing a new file
-      //      doCleanupTableScanInfo(pScanInfo);
       bool hasNexTable = moveToNextTable(pUidList, pStatus);
       if (!hasNexTable) {
         return TSDB_CODE_SUCCESS;
@@ -2580,9 +2589,6 @@ static int32_t doLoadLastBlockSequentially(STsdbReader* pReader) {
       continue;
     }
 
-    // reset the index in last block when handing a new file
-    //    doCleanupTableScanInfo(pScanInfo);
-
     bool hasDataInLastFile = initLastBlockReader(pLastBlockReader, pScanInfo, pReader);
     if (!hasDataInLastFile) {
       bool hasNexTable = moveToNextTable(pUidList, pStatus);
diff --git a/source/libs/executor/src/scanoperator.c b/source/libs/executor/src/scanoperator.c
index 6c8d9ed59f57320b01474ae0c05af978089217ec..a15b128a99766fd1984b27daa832ca619a861f74 100644
--- a/source/libs/executor/src/scanoperator.c
+++ b/source/libs/executor/src/scanoperator.c
@@ -2155,15 +2155,14 @@ FETCH_NEXT_BLOCK:
           return pInfo->pCreateTbRes;
         }
 
-        doCheckUpdate(pInfo, pBlockInfo->window.ekey, pBlock);
-        doFilter(pBlock, pOperator->exprSupp.pFilterInfo, NULL);
-
         // apply additional time window filter
         doBlockDataWindowFilter(pBlock, pInfo->primaryTsIndex, &pStreamInfo->fillHistoryWindow, id);
-
         pBlock->info.dataLoad = 1;
         blockDataUpdateTsWindow(pBlock, pInfo->primaryTsIndex);
 
+        doCheckUpdate(pInfo, pBlockInfo->window.ekey, pBlock);
+        doFilter(pBlock, pOperator->exprSupp.pFilterInfo, NULL);
+
         int64_t numOfUpdateRes = pInfo->pUpdateDataRes->info.rows;
         qDebug("%s %" PRId64 " rows in datablock, update res:%" PRId64, id, pBlockInfo->rows, numOfUpdateRes);
         if (pBlockInfo->rows > 0 || numOfUpdateRes > 0) {