diff --git a/source/libs/executor/inc/hashjoin.h b/source/libs/executor/inc/hashjoin.h
index 751b76b0ef..6822333d0a 100755
--- a/source/libs/executor/inc/hashjoin.h
+++ b/source/libs/executor/inc/hashjoin.h
@@ -83,6 +83,16 @@ typedef struct SHJoinTableInfo {
   bool           valColExist;
 } SHJoinTableInfo;
 
+typedef struct SHJoinExecInfo {
+  int64_t buildBlkNum;
+  int64_t buildBlkRows;
+  int64_t probeBlkNum;
+  int64_t probeBlkRows;
+  int64_t resRows;
+  int64_t expectRows;
+} SHJoinExecInfo;
+
+
 typedef struct SHJoinOperatorInfo {
   int32_t          joinType;
   SHJoinTableInfo  tbs[2];
@@ -96,6 +106,7 @@ typedef struct SHJoinOperatorInfo {
   SSHashObj*       pKeyHash;
   bool             keyHashBuilt;
   SHJoinCtx        ctx;
+  SHJoinExecInfo   execInfo;
 } SHJoinOperatorInfo;
 
 #ifdef __cplusplus
diff --git a/source/libs/executor/inc/querytask.h b/source/libs/executor/inc/querytask.h
index 68acf07aee..590ac349d0 100644
--- a/source/libs/executor/inc/querytask.h
+++ b/source/libs/executor/inc/querytask.h
@@ -39,6 +39,7 @@ typedef struct STaskIdInfo {
   uint64_t templateId;
   char*    str;
   int32_t  vgId;
+  uint64_t taskId;
 } STaskIdInfo;
 
 typedef struct STaskCostInfo {
diff --git a/source/libs/executor/src/dynqueryctrloperator.c b/source/libs/executor/src/dynqueryctrloperator.c
index b323ad7874..49cada2549 100755
--- a/source/libs/executor/src/dynqueryctrloperator.c
+++ b/source/libs/executor/src/dynqueryctrloperator.c
@@ -148,6 +148,8 @@ static FORCE_INLINE int32_t buildBatchExchangeOperatorParam(SOperatorParam** ppR
     basic.tableSeq = false;
     
     tSimpleHashPut(pExc->pBatchs, pVgId, sizeof(*pVgId), &basic, sizeof(basic));   
+
+    qTrace("build downstreamIdx %d batch scan, vgId:%d, uidNum:%" PRId64, downstreamIdx, *pVgId, (int64_t)taosArrayGetSize(pUidList));
   }
 
   (*ppRes)->opType = QUERY_NODE_PHYSICAL_PLAN_EXCHANGE;
diff --git a/source/libs/executor/src/groupcacheoperator.c b/source/libs/executor/src/groupcacheoperator.c
index 3bd071d0d1..a6325e71b7 100755
--- a/source/libs/executor/src/groupcacheoperator.c
+++ b/source/libs/executor/src/groupcacheoperator.c
@@ -86,7 +86,8 @@ static void destroyGroupCacheOperator(void* param) {
 }
 
 static FORCE_INLINE int32_t initOpenCacheFile(SGroupCacheFileFd* pFileFd, char* filename) {
-  TdFilePtr newFd = taosOpenFile(filename, TD_FILE_CREATE|TD_FILE_READ|TD_FILE_WRITE|TD_FILE_AUTO_DEL);
+//  TdFilePtr newFd = taosOpenFile(filename, TD_FILE_CREATE|TD_FILE_READ|TD_FILE_WRITE|TD_FILE_AUTO_DEL);
+  TdFilePtr newFd = taosOpenFile(filename, TD_FILE_CREATE|TD_FILE_READ|TD_FILE_WRITE);
   if (NULL == newFd) {
     return TAOS_SYSTEM_ERROR(errno);
   }
@@ -158,7 +159,7 @@ static int32_t saveBlocksToDisk(SGroupCacheOperatorInfo* pGCache, SGcDownstreamC
     releaseFdToFileCtx(pFd);
 
     qTrace("FileId %u, blk %" PRIu64 " size %" PRIu64 " written to offset %" PRIu64, 
-        pHead->basic.fileId, pHead->basic.blkId, pHead->basic.offset, pHead->basic.bufSize);
+        pHead->basic.fileId, pHead->basic.blkId, pHead->basic.bufSize, pHead->basic.offset);
     
     int64_t blkId = pHead->basic.blkId;
     pHead = pHead->next;
@@ -347,7 +348,7 @@ static int32_t readBlockFromDisk(SGroupCacheOperatorInfo* pGCache, SGroupCacheDa
   }
 
   qTrace("FileId %u, blk %" PRIu64 " size %" PRIu64 " read from offset %" PRIu64, 
-      pBasic->fileId, pBasic->blkId, pBasic->offset, pBasic->bufSize);
+      pBasic->fileId, pBasic->blkId, pBasic->bufSize, pBasic->offset);
 
 _return:
 
@@ -387,7 +388,8 @@ static int32_t retrieveBlkFromBufCache(SGroupCacheOperatorInfo* pGCache, SGroupC
 static FORCE_INLINE void initGcVgroupCtx(SOperatorInfo* pOperator, SGcVgroupCtx* pVgCtx, int32_t downstreamId, int32_t vgId, SArray* pTbList) {
   pVgCtx->pTbList = pTbList;
   
-  snprintf(pVgCtx->fileCtx.baseFilename, sizeof(pVgCtx->fileCtx.baseFilename) - 1, "%s/gc_%d_%s_%d_%d", tsTempDir, getpid(), GET_TASKID(pOperator->pTaskInfo), downstreamId, vgId);
+  snprintf(pVgCtx->fileCtx.baseFilename, sizeof(pVgCtx->fileCtx.baseFilename) - 1, "%s/gc_%d_%" PRIx64 "_%" PRIu64 "_%d_%d", 
+     tsTempDir, getpid(), pOperator->pTaskInfo->id.queryId, pOperator->pTaskInfo->id.taskId, downstreamId, vgId);
   pVgCtx->fileCtx.baseFilename[sizeof(pVgCtx->fileCtx.baseFilename) - 1] = 0;
 
   pVgCtx->fileCtx.baseNameLen = strlen(pVgCtx->fileCtx.baseFilename);
@@ -857,6 +859,7 @@ static int32_t initGroupCacheBlockCache(SGroupCacheOperatorInfo* pInfo) {
   if (NULL == pCache->pReadBlk) {
     return TSDB_CODE_OUT_OF_MEMORY;
   }
+  pCache->writeDownstreamId = -1;
 
   return TSDB_CODE_SUCCESS;
 }
@@ -982,7 +985,8 @@ static int32_t initGroupCacheDownstreamCtx(SOperatorInfo*          pOperator) {
       return TSDB_CODE_OUT_OF_MEMORY;
     }
 
-    snprintf(pCtx->fileCtx.baseFilename, sizeof(pCtx->fileCtx.baseFilename) - 1, "%s/gc_%d_%s_%d", tsTempDir, getpid(), GET_TASKID(pOperator->pTaskInfo), pCtx->id);
+    snprintf(pCtx->fileCtx.baseFilename, sizeof(pCtx->fileCtx.baseFilename) - 1, "%s/gc_%d_%" PRIx64 "_%" PRIu64 "_%d", 
+      tsTempDir, getpid(), pOperator->pTaskInfo->id.queryId, pOperator->pTaskInfo->id.taskId, pCtx->id);
     pCtx->fileCtx.baseFilename[sizeof(pCtx->fileCtx.baseFilename) - 1] = 0;
     pCtx->fileCtx.baseNameLen = strlen(pCtx->fileCtx.baseFilename);
   }
@@ -1018,7 +1022,7 @@ SOperatorInfo* createGroupCacheOperatorInfo(SOperatorInfo** pDownstream, int32_t
   
   setOperatorInfo(pOperator, "GroupCacheOperator", QUERY_NODE_PHYSICAL_PLAN_GROUP_CACHE, false, OP_NOT_OPENED, pInfo, pTaskInfo);
 
-  pInfo->maxCacheSize = 104857600;
+  pInfo->maxCacheSize = 1;
   pInfo->grpByUid = pPhyciNode->grpByUid;
   pInfo->globalGrp = pPhyciNode->globalGrp;
   pInfo->batchFetch = pPhyciNode->batchFetch;
diff --git a/source/libs/executor/src/hashjoinoperator.c b/source/libs/executor/src/hashjoinoperator.c
index dfbc39252e..77588e02f2 100755
--- a/source/libs/executor/src/hashjoinoperator.c
+++ b/source/libs/executor/src/hashjoinoperator.c
@@ -27,6 +27,31 @@
 #include "ttypes.h"
 #include "hashjoin.h"
 
+
+static int64_t getSingleKeyRowsNum(SBufRowInfo* pRow) {
+  int64_t rows = 0;
+  while (pRow) {
+    rows++;
+    pRow = pRow->next;
+  }
+  return rows;
+}
+
+static int64_t getRowsNumOfKeyHash(SSHashObj* pHash) {
+  SGroupData* pGroup = NULL;
+  int32_t iter = 0;
+  int64_t rowsNum = 0;
+  
+  while (pGroup = tSimpleHashIterate(pHash, pGroup, &iter)) {
+    int32_t* pKey = tSimpleHashGetKey(pGroup, NULL);
+    int64_t rows = getSingleKeyRowsNum(pGroup->rows);
+    qTrace("build_key:%d, rows:%" PRId64, *pKey, rows);
+    rowsNum += rows;
+  }
+
+  return rowsNum;
+}
+
 static int32_t initHJoinKeyColsInfo(SHJoinTableInfo* pTable, SNodeList* pList) {
   pTable->keyNum = LIST_LENGTH(pList);
   
@@ -274,6 +299,9 @@ static void destroyHJoinKeyHash(SSHashObj** ppHash) {
 
 static void destroyHashJoinOperator(void* param) {
   SHJoinOperatorInfo* pJoinOperator = (SHJoinOperatorInfo*)param;
+  qError("hashJoin exec info, buildBlk:%" PRId64 ", buildRows:%" PRId64 ", probeBlk:%" PRId64 ", probeRows:%" PRId64 ", resRows:%" PRId64, 
+         pJoinOperator->execInfo.buildBlkNum, pJoinOperator->execInfo.buildBlkRows, pJoinOperator->execInfo.probeBlkNum, 
+         pJoinOperator->execInfo.probeBlkRows, pJoinOperator->execInfo.resRows);
 
   destroyHJoinKeyHash(&pJoinOperator->pKeyHash);
 
@@ -348,19 +376,21 @@ static FORCE_INLINE int32_t copyHJoinResRowsToBlock(SHJoinOperatorInfo* pJoin, i
 }
 
 
-static FORCE_INLINE void appendHJoinResToBlock(struct SOperatorInfo* pOperator, SSDataBlock* pRes) {
+static FORCE_INLINE void appendHJoinResToBlock(struct SOperatorInfo* pOperator, SSDataBlock* pRes, bool* allFetched) {
   SHJoinOperatorInfo* pJoin = pOperator->info;
   SHJoinCtx* pCtx = &pJoin->ctx;
   SBufRowInfo* pStart = pCtx->pBuildRow;
   int32_t rowNum = 0;
   int32_t resNum = pRes->info.rows;
   
-  while (pCtx->pBuildRow && resNum < pRes->info.capacity) {
+  while (pCtx->pBuildRow && (resNum < pRes->info.capacity)) {
     rowNum++;
     resNum++;
     pCtx->pBuildRow = pCtx->pBuildRow->next;
   }
 
+  pJoin->execInfo.resRows += rowNum;
+
   int32_t code = copyHJoinResRowsToBlock(pJoin, rowNum, pStart, pRes);
   if (code) {
     pOperator->pTaskInfo->code = code;
@@ -368,7 +398,7 @@ static FORCE_INLINE void appendHJoinResToBlock(struct SOperatorInfo* pOperator,
   }
 
   pRes->info.rows = resNum;
-  pCtx->rowRemains = pCtx->pBuildRow ? true : false;
+  *allFetched = pCtx->pBuildRow ? false : true;
 }
 
 
@@ -412,23 +442,44 @@ static void doHashJoinImpl(struct SOperatorInfo* pOperator) {
   SHJoinCtx* pCtx = &pJoin->ctx;
   SSDataBlock* pRes = pJoin->pRes;
   size_t bufLen = 0;
+  bool allFetched = false;
 
   if (pJoin->ctx.pBuildRow) {
-    appendHJoinResToBlock(pOperator, pRes);
+    appendHJoinResToBlock(pOperator, pRes, &allFetched);
     if (pRes->info.rows >= pRes->info.capacity) {
+      if (allFetched) {
+        ++pCtx->probeIdx;
+      }
+      
       return;
+    } else {
+      ++pCtx->probeIdx;
     }
   }
 
   for (; pCtx->probeIdx < pCtx->pProbeData->info.rows; ++pCtx->probeIdx) {
     copyKeyColsDataToBuf(pProbe, pCtx->probeIdx, &bufLen);
     SGroupData* pGroup = tSimpleHashGet(pJoin->pKeyHash, pProbe->keyData, bufLen);
+/*
+    size_t keySize = 0;
+    int32_t* pKey = tSimpleHashGetKey(pGroup, &keySize);
+    ASSERT(keySize == bufLen && 0 == memcmp(pKey, pProbe->keyData, bufLen));
+    int64_t rows = getSingleKeyRowsNum(pGroup->rows);
+    pJoin->execInfo.expectRows += rows;    
+    qTrace("hash_key:%d, rows:%" PRId64, *pKey, rows);
+*/
     if (pGroup) {
       pCtx->pBuildRow = pGroup->rows;
-      appendHJoinResToBlock(pOperator, pRes);
+      appendHJoinResToBlock(pOperator, pRes, &allFetched);
       if (pRes->info.rows >= pRes->info.capacity) {
+        if (allFetched) {
+          ++pCtx->probeIdx;
+        }
+        
         return;
       }
+    } else {
+      qTrace("no key matched");
     }
   }
 
@@ -649,6 +700,9 @@ static int32_t buildHJoinKeyHash(struct SOperatorInfo* pOperator) {
       break;
     }
 
+    pJoin->execInfo.buildBlkNum++;
+    pJoin->execInfo.buildBlkRows += pBlock->info.rows;
+
     code = addBlockRowsToHash(pBlock, pJoin);
     if (code) {
       return code;
@@ -673,6 +727,7 @@ static int32_t launchBlockHashJoin(struct SOperatorInfo* pOperator, SSDataBlock*
   pJoin->ctx.probeIdx = 0;
   pJoin->ctx.pBuildRow = NULL;
   pJoin->ctx.pProbeData = pBlock;
+  pJoin->ctx.rowRemains = true;
 
   doHashJoinImpl(pOperator);
 
@@ -718,12 +773,14 @@ static SSDataBlock* doHashJoin(struct SOperatorInfo* pOperator) {
       setHJoinDone(pOperator);
       goto _return;
     }
+
+    //qTrace("build table rows:%" PRId64, getRowsNumOfKeyHash(pJoin->pKeyHash));
   }
 
   if (pJoin->ctx.rowRemains) {
     doHashJoinImpl(pOperator);
     
-    if (pRes->info.rows >= pOperator->resultInfo.threshold && pOperator->exprSupp.pFilterInfo != NULL) {
+    if (pRes->info.rows >= pRes->info.capacity && pOperator->exprSupp.pFilterInfo != NULL) {
       doFilter(pRes, pOperator->exprSupp.pFilterInfo, NULL);
     }
     if (pRes->info.rows > 0) {
@@ -737,6 +794,9 @@ static SSDataBlock* doHashJoin(struct SOperatorInfo* pOperator) {
       setHJoinDone(pOperator);
       break;
     }
+
+    pJoin->execInfo.probeBlkNum++;
+    pJoin->execInfo.probeBlkRows += pBlock->info.rows;
     
     code = launchBlockHashJoin(pOperator, pBlock);
     if (code) {
diff --git a/source/libs/executor/src/querytask.c b/source/libs/executor/src/querytask.c
index 22d171e74a..96fe1bf2f9 100644
--- a/source/libs/executor/src/querytask.c
+++ b/source/libs/executor/src/querytask.c
@@ -54,6 +54,7 @@ SExecTaskInfo* doCreateTask(uint64_t queryId, uint64_t taskId, int32_t vgId, EOP
 
   pTaskInfo->id.vgId = vgId;
   pTaskInfo->id.queryId = queryId;
+  pTaskInfo->id.taskId = taskId;
   pTaskInfo->id.str = taosMemoryMalloc(64);
   buildTaskId(taskId, queryId, pTaskInfo->id.str);
   return pTaskInfo;
diff --git a/source/libs/executor/src/scanoperator.c b/source/libs/executor/src/scanoperator.c
index f32fe5ba5b..a45621bf71 100644
--- a/source/libs/executor/src/scanoperator.c
+++ b/source/libs/executor/src/scanoperator.c
@@ -803,18 +803,24 @@ static int32_t createTableListInfoFromParam(SOperatorInfo* pOperator) {
     pListInfo->oneTableForEachGroup = false;
     pListInfo->numOfOuputGroups = 1;
   }
-  
+
+  STableKeyInfo info = {.groupId = 0};  
   for (int32_t i = 0; i < num; ++i) {
     uint64_t* pUid = taosArrayGet(pParam->pUidList, i);
-    STableKeyInfo info = {.uid = *pUid, .groupId = 0};
 
+    if (taosHashPut(pListInfo->map, pUid, sizeof(uint64_t), &i, sizeof(int32_t))) {
+      if (TSDB_CODE_DUP_KEY == terrno) {
+        continue;
+      }
+      return TSDB_CODE_OUT_OF_MEMORY;
+    }
+
+    info.uid = *pUid;
     void* p = taosArrayPush(pListInfo->pTableList, &info);
     if (p == NULL) {
       return TSDB_CODE_OUT_OF_MEMORY;
     }
 
-    taosHashPut(pListInfo->map, pUid, sizeof(uint64_t), &i, sizeof(int32_t));
-
     qError("add dynamic table scan uid:%" PRIu64 ", %s", info.uid, GET_TASKID(pTaskInfo));
   }
   
@@ -3596,4 +3602,4 @@ static void destoryTableCountScanOperator(void* param) {
 
   taosArrayDestroy(pTableCountScanInfo->stbUidList);
   taosMemoryFreeClear(param);
-}
\ No newline at end of file
+}