diff --git a/include/libs/stream/streamState.h b/include/libs/stream/streamState.h
index af673f163e..62b555d437 100644
--- a/include/libs/stream/streamState.h
+++ b/include/libs/stream/streamState.h
@@ -17,6 +17,7 @@
 
 #include "rocksdb/c.h"
 #include "tdbInt.h"
+#include "tsimplehash.h"
 #include "tstreamFileState.h"
 
 #ifdef __cplusplus
@@ -57,6 +58,7 @@ typedef struct {
   STdbState*        pTdbState;
   SStreamFileState* pFileState;
   int32_t           number;
+  SSHashObj*        parNameMap;
 } SStreamState;
 
 SStreamState* streamStateOpen(char* path, SStreamTask* pTask, bool specPath, int32_t szPage, int32_t pages);
diff --git a/source/libs/executor/inc/executorimpl.h b/source/libs/executor/inc/executorimpl.h
index 74f642271a..0544568c3b 100644
--- a/source/libs/executor/inc/executorimpl.h
+++ b/source/libs/executor/inc/executorimpl.h
@@ -714,9 +714,6 @@ int32_t initAggSup(SExprSupp* pSup, SAggSupporter* pAggSup, SExprInfo* pExprInfo
 void    cleanupAggSup(SAggSupporter* pAggSup);
 
 void initResultSizeInfo(SResultInfo* pResultInfo, int32_t numOfRows);
-
-void doBuildStreamResBlock(SOperatorInfo* pOperator, SOptrBasicInfo* pbInfo, SGroupResInfo* pGroupResInfo,
-                           SDiskbasedBuf* pBuf);
 void doBuildResultDatablock(SOperatorInfo* pOperator, SOptrBasicInfo* pbInfo, SGroupResInfo* pGroupResInfo,
                             SDiskbasedBuf* pBuf);
 
diff --git a/source/libs/executor/src/executorimpl.c b/source/libs/executor/src/executorimpl.c
index 606816d853..e41ec5c7c7 100644
--- a/source/libs/executor/src/executorimpl.c
+++ b/source/libs/executor/src/executorimpl.c
@@ -1218,33 +1218,6 @@ int32_t doCopyToSDataBlock(SExecTaskInfo* pTaskInfo, SSDataBlock* pBlock, SExprS
   return 0;
 }
 
-void doBuildStreamResBlock(SOperatorInfo* pOperator, SOptrBasicInfo* pbInfo, SGroupResInfo* pGroupResInfo,
-                           SDiskbasedBuf* pBuf) {
-  SExecTaskInfo* pTaskInfo = pOperator->pTaskInfo;
-  SSDataBlock*   pBlock = pbInfo->pRes;
-
-  // set output datablock version
-  pBlock->info.version = pTaskInfo->version;
-
-  blockDataCleanup(pBlock);
-  if (!hasRemainResults(pGroupResInfo)) {
-    return;
-  }
-
-  // clear the existed group id
-  pBlock->info.id.groupId = 0;
-  ASSERT(!pbInfo->mergeResultBlock);
-  doCopyToSDataBlock(pTaskInfo, pBlock, &pOperator->exprSupp, pBuf, pGroupResInfo);
-
-  void* tbname = NULL;
-  if (streamStateGetParName(pTaskInfo->streamInfo.pState, pBlock->info.id.groupId, &tbname) < 0) {
-    pBlock->info.parTbName[0] = 0;
-  } else {
-    memcpy(pBlock->info.parTbName, tbname, TSDB_TABLE_NAME_LEN);
-  }
-  streamFreeVal(tbname);
-}
-
 void doBuildResultDatablock(SOperatorInfo* pOperator, SOptrBasicInfo* pbInfo, SGroupResInfo* pGroupResInfo,
                             SDiskbasedBuf* pBuf) {
   SExecTaskInfo* pTaskInfo = pOperator->pTaskInfo;
diff --git a/source/libs/executor/src/scanoperator.c b/source/libs/executor/src/scanoperator.c
index 2a69f12639..35448a9e07 100644
--- a/source/libs/executor/src/scanoperator.c
+++ b/source/libs/executor/src/scanoperator.c
@@ -1130,6 +1130,7 @@ static STimeWindow getSlidingWindow(TSKEY* startTsCol, TSKEY* endTsCol, uint64_t
 }
 
 static SSDataBlock* doRangeScan(SStreamScanInfo* pInfo, SSDataBlock* pSDB, int32_t tsColIndex, int32_t* pRowIndex) {
+  qInfo("do stream range scan. windows index:%d", *pRowIndex);
   while (1) {
     SSDataBlock* pResult = NULL;
     pResult = doTableScan(pInfo->pTableScanOp);
diff --git a/source/libs/executor/src/timewindowoperator.c b/source/libs/executor/src/timewindowoperator.c
index 8b5750dbcf..5d7caabb74 100644
--- a/source/libs/executor/src/timewindowoperator.c
+++ b/source/libs/executor/src/timewindowoperator.c
@@ -2627,11 +2627,11 @@ static SSDataBlock* doStreamFinalIntervalAgg(SOperatorInfo* pOperator) {
   }
 
   if (!pInfo->pUpdated) {
-    pInfo->pUpdated = taosArrayInit(4, POINTER_BYTES);
+    pInfo->pUpdated = taosArrayInit(4096, POINTER_BYTES);
   }
   if (!pInfo->pUpdatedMap) {
     _hash_fn_t hashFn = taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY);
-    pInfo->pUpdatedMap = tSimpleHashInit(1024, hashFn);
+    pInfo->pUpdatedMap = tSimpleHashInit(4096, hashFn);
   }
 
   while (1) {
@@ -4864,11 +4864,11 @@ static SSDataBlock* doStreamIntervalAgg(SOperatorInfo* pOperator) {
   SOperatorInfo* downstream = pOperator->pDownstream[0];
 
   if (!pInfo->pUpdated) {
-    pInfo->pUpdated = taosArrayInit(4, POINTER_BYTES);
+    pInfo->pUpdated = taosArrayInit(4096, POINTER_BYTES);
   }
   if (!pInfo->pUpdatedMap) {
     _hash_fn_t hashFn = taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY);
-    pInfo->pUpdatedMap = tSimpleHashInit(1024, hashFn);
+    pInfo->pUpdatedMap = tSimpleHashInit(4096, hashFn);
   }
 
   while (1) {
diff --git a/source/libs/stream/src/streamExec.c b/source/libs/stream/src/streamExec.c
index 06819a1fd4..207be792ed 100644
--- a/source/libs/stream/src/streamExec.c
+++ b/source/libs/stream/src/streamExec.c
@@ -15,7 +15,7 @@
 
 #include "streamInc.h"
 
-#define STREAM_EXEC_MAX_BATCH_NUM 100
+#define STREAM_EXEC_MAX_BATCH_NUM 1024
 
 static int32_t streamTaskExecImpl(SStreamTask* pTask, const void* data, SArray* pRes) {
   int32_t code;
diff --git a/source/libs/stream/src/streamState.c b/source/libs/stream/src/streamState.c
index b11ef1b640..a68e16c0e6 100644
--- a/source/libs/stream/src/streamState.c
+++ b/source/libs/stream/src/streamState.c
@@ -26,6 +26,8 @@
 #include "tcompare.h"
 #include "ttimer.h"
 
+#define MAX_TABLE_NAME_NUM  100000
+
 int sessionRangeKeyCmpr(const SSessionKey* pWin1, const SSessionKey* pWin2) {
   if (pWin1->groupId > pWin2->groupId) {
     return 1;
@@ -133,6 +135,8 @@ SStreamState* streamStateOpen(char* path, SStreamTask* pTask, bool specPath, int
   qWarn("open stream state2, %s", statePath);
   pState->pTdbState->pOwner = pTask;
   pState->pFileState = NULL;
+  _hash_fn_t hashFn = taosGetDefaultHashFunction(TSDB_DATA_TYPE_BIGINT);
+  pState->parNameMap = tSimpleHashInit(1024, hashFn);
   return pState;
 
 #else
@@ -1020,7 +1024,14 @@ _end:
 int32_t streamStatePutParName(SStreamState* pState, int64_t groupId, const char tbname[TSDB_TABLE_NAME_LEN]) {
   qWarn("try to write to cf parname");
 #ifdef USE_ROCKSDB
-  return streamStatePutParName_rocksdb(pState, groupId, tbname);
+  if (tSimpleHashGetSize(pState->parNameMap) > MAX_TABLE_NAME_NUM) {
+    if (tSimpleHashGet(pState->parNameMap, &groupId, sizeof(int64_t)) == NULL) {
+      streamStatePutParName_rocksdb(pState, groupId, tbname);
+    }
+    return TSDB_CODE_SUCCESS;
+  }
+  tSimpleHashPut(pState->parNameMap, &groupId, sizeof(int64_t), tbname, TSDB_TABLE_NAME_LEN);
+  return TSDB_CODE_SUCCESS;
 #else
   return tdbTbUpsert(pState->pTdbState->pParNameDb, &groupId, sizeof(int64_t), tbname, TSDB_TABLE_NAME_LEN,
                      pState->pTdbState->txn);
@@ -1029,7 +1040,16 @@ int32_t streamStatePutParName(SStreamState* pState, int64_t groupId, const char
 
 int32_t streamStateGetParName(SStreamState* pState, int64_t groupId, void** pVal) {
 #ifdef USE_ROCKSDB
-  return streamStateGetParName_rocksdb(pState, groupId, pVal);
+  void* pStr = tSimpleHashGet(pState->parNameMap, &groupId, sizeof(int64_t));
+  if (!pStr) {
+    if (tSimpleHashGetSize(pState->parNameMap) > MAX_TABLE_NAME_NUM) {
+      return streamStateGetParName_rocksdb(pState, groupId, pVal);
+    }
+    return TSDB_CODE_FAILED;
+  }
+  *pVal = taosMemoryCalloc(1, TSDB_TABLE_NAME_LEN);
+  memcpy(*pVal, pStr, TSDB_TABLE_NAME_LEN);
+  return TSDB_CODE_SUCCESS;
 #else
   int32_t len;
   return tdbTbGet(pState->pTdbState->pParNameDb, &groupId, sizeof(int64_t), pVal, &len);
diff --git a/source/libs/stream/src/tstreamFileState.c b/source/libs/stream/src/tstreamFileState.c
index e60a789e7b..34d4fa9d5f 100644
--- a/source/libs/stream/src/tstreamFileState.c
+++ b/source/libs/stream/src/tstreamFileState.c
@@ -57,10 +57,12 @@ SStreamFileState* streamFileStateInit(int64_t memSize, uint32_t keySize, uint32_
   if (!pFileState) {
     goto _error;
   }
+  pFileState->maxRowCount = TMAX( (uint64_t)memSize / rowSize, FLUSH_NUM * 2);
   pFileState->usedBuffs = tdListNew(POINTER_BYTES);
   pFileState->freeBuffs = tdListNew(POINTER_BYTES);
   _hash_fn_t hashFn = taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY);
-  pFileState->rowBuffMap = tSimpleHashInit(1024, hashFn);
+  int32_t cap = TMIN(10240, pFileState->maxRowCount);
+  pFileState->rowBuffMap = tSimpleHashInit(cap, hashFn);
   if (!pFileState->usedBuffs || !pFileState->freeBuffs || !pFileState->rowBuffMap) {
     goto _error;
   }
@@ -126,7 +128,9 @@ void clearExpiredRowBuff(SStreamFileState* pFileState, TSKEY ts, bool all) {
       ASSERT(pPos->pRowBuff != NULL);
       tdListAppend(pFileState->freeBuffs, &(pPos->pRowBuff));
       pPos->pRowBuff = NULL;
-      tSimpleHashRemove(pFileState->rowBuffMap, pPos->pKey, pFileState->keyLen);
+      if (!all) {
+        tSimpleHashRemove(pFileState->rowBuffMap, pPos->pKey, pFileState->keyLen);
+      }
       destroyRowBuffPos(pPos);
       tdListPopNode(pFileState->usedBuffs, pNode);
       taosMemoryFreeClear(pNode);
@@ -156,6 +160,7 @@ void popUsedBuffs(SStreamFileState* pFileState, SStreamSnapshot* pFlushList, uin
       i++;
     }
   }
+  qInfo("do stream state flush %d rows to disck. is used: %d", listNEles(pFlushList), used);
 }
 
 int32_t flushRowBuff(SStreamFileState* pFileState) {