diff --git a/include/common/tcommon.h b/include/common/tcommon.h
index fd4ed6b1800439550c7f3bf618ac99252f26e01e..63167bd834384421fe1fb7a6ab9c60ef9c41a551 100644
--- a/include/common/tcommon.h
+++ b/include/common/tcommon.h
@@ -117,6 +117,20 @@ typedef struct SSDataBlock {
   SDataBlockInfo   info;
 } SSDataBlock;
 
+enum {
+  FETCH_TYPE__DATA = 1,
+  FETCH_TYPE__META,
+  FETCH_TYPE__NONE,
+};
+
+typedef struct {
+  int8_t fetchType;
+  union {
+    SSDataBlock data;
+    void*       meta;
+  };
+} SFetchRet;
+
 typedef struct SVarColAttr {
   int32_t* offset;    // start position for each entry in the list
   uint32_t length;    // used buffer size that contain the valid data
diff --git a/include/libs/executor/executor.h b/include/libs/executor/executor.h
index 7b4565a99fa2557eacb4983616b0db0c5fea9ff3..0094afef123fa140bcb6184868b33de97d0fd16d 100644
--- a/include/libs/executor/executor.h
+++ b/include/libs/executor/executor.h
@@ -30,7 +30,7 @@ struct SRpcMsg;
 struct SSubplan;
 
 typedef struct SReadHandle {
-  void*   streamReader;
+  void*   tqReader;
   void*   meta;
   void*   config;
   void*   vnode;
@@ -38,7 +38,7 @@ typedef struct SReadHandle {
   SMsgCb* pMsgCb;
   bool    initMetaReader;
   bool    initTableReader;
-  bool    initStreamReader;
+  bool    initTqReader;
 } SReadHandle;
 
 typedef enum {
@@ -52,7 +52,7 @@ typedef enum {
  * @param streamReadHandle
  * @return
  */
-qTaskInfo_t qCreateStreamExecTaskInfo(void* msg, void* streamReadHandle);
+qTaskInfo_t qCreateStreamExecTaskInfo(void* msg, SReadHandle* readers);
 
 /**
  * Switch the stream scan to snapshot mode
@@ -176,6 +176,9 @@ int32_t qGetStreamScanStatus(qTaskInfo_t tinfo, uint64_t* uid, int64_t* ts);
 
 int32_t qStreamPrepareScan(qTaskInfo_t tinfo, uint64_t uid, int64_t ts);
 
+void*   qExtractReaderFromStreamScanner(void* scanner);
+int32_t qExtractStreamScanner(qTaskInfo_t tinfo, void** scanner);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/include/libs/stream/tstream.h b/include/libs/stream/tstream.h
index 52f671e176c94536d2ae10dd61c74b7b07bcfdb1..d6cb2c27b02b132b4ab87fdefb545dc6d6cc2fd3 100644
--- a/include/libs/stream/tstream.h
+++ b/include/libs/stream/tstream.h
@@ -235,11 +235,6 @@ typedef struct SStreamTask {
   int8_t taskStatus;
   int8_t execStatus;
 
-  // exec info
-  int64_t enqueueVer;
-  int64_t processedVer;
-  int64_t checkpointVer;
-
   // node info
   int32_t selfChildId;
   int32_t nodeId;
diff --git a/source/dnode/mgmt/mgmt_mnode/src/mmHandle.c b/source/dnode/mgmt/mgmt_mnode/src/mmHandle.c
index d60b69daba8170ff2a8c691819532e3361229cac..4e3449feb7bfe54a69ad97134cac42641b49a22c 100644
--- a/source/dnode/mgmt/mgmt_mnode/src/mmHandle.c
+++ b/source/dnode/mgmt/mgmt_mnode/src/mmHandle.c
@@ -238,10 +238,12 @@ SArray *mmGetMsgHandles() {
   if (dmSetMgmtHandle(pArray, TDMT_SYNC_PING, mmPutMsgToSyncQueue, 1) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_SYNC_PING_REPLY, mmPutMsgToSyncQueue, 1) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_SYNC_CLIENT_REQUEST, mmPutMsgToSyncQueue, 1) == NULL) goto _OVER;
+  if (dmSetMgmtHandle(pArray, TDMT_SYNC_CLIENT_REQUEST_BATCH, mmPutMsgToSyncQueue, 1) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_SYNC_CLIENT_REQUEST_REPLY, mmPutMsgToSyncQueue, 1) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_SYNC_REQUEST_VOTE, mmPutMsgToSyncQueue, 1) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_SYNC_REQUEST_VOTE_REPLY, mmPutMsgToSyncQueue, 1) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_SYNC_APPEND_ENTRIES, mmPutMsgToSyncQueue, 1) == NULL) goto _OVER;
+  if (dmSetMgmtHandle(pArray, TDMT_SYNC_APPEND_ENTRIES_BATCH, mmPutMsgToSyncQueue, 1) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_SYNC_APPEND_ENTRIES_REPLY, mmPutMsgToSyncQueue, 1) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_SYNC_SNAPSHOT_SEND, mmPutMsgToSyncQueue, 1) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_SYNC_SNAPSHOT_RSP, mmPutMsgToSyncQueue, 1) == NULL) goto _OVER;
diff --git a/source/dnode/mgmt/mgmt_vnode/src/vmHandle.c b/source/dnode/mgmt/mgmt_vnode/src/vmHandle.c
index a3df32a08c86c583deb4bd51ab31f52c588678aa..993a604b510de8911e1a56046fca116194490c47 100644
--- a/source/dnode/mgmt/mgmt_vnode/src/vmHandle.c
+++ b/source/dnode/mgmt/mgmt_vnode/src/vmHandle.c
@@ -377,10 +377,12 @@ SArray *vmGetMsgHandles() {
   if (dmSetMgmtHandle(pArray, TDMT_SYNC_PING, vmPutMsgToSyncQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_SYNC_PING_REPLY, vmPutMsgToSyncQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_SYNC_CLIENT_REQUEST, vmPutMsgToSyncQueue, 0) == NULL) goto _OVER;
+  if (dmSetMgmtHandle(pArray, TDMT_SYNC_CLIENT_REQUEST_BATCH, vmPutMsgToSyncQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_SYNC_CLIENT_REQUEST_REPLY, vmPutMsgToSyncQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_SYNC_REQUEST_VOTE, vmPutMsgToSyncQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_SYNC_REQUEST_VOTE_REPLY, vmPutMsgToSyncQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_SYNC_APPEND_ENTRIES, vmPutMsgToSyncQueue, 0) == NULL) goto _OVER;
+  if (dmSetMgmtHandle(pArray, TDMT_SYNC_APPEND_ENTRIES_BATCH, vmPutMsgToSyncQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_SYNC_APPEND_ENTRIES_REPLY, vmPutMsgToSyncQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_SYNC_SET_VNODE_STANDBY, vmPutMsgToSyncQueue, 0) == NULL) goto _OVER;
 
diff --git a/source/dnode/vnode/inc/vnode.h b/source/dnode/vnode/inc/vnode.h
index 722087ea45dd472324a07523d86605ae734e5ef1..b381046ecf987fad77a4773e9440e5f9492634b7 100644
--- a/source/dnode/vnode/inc/vnode.h
+++ b/source/dnode/vnode/inc/vnode.h
@@ -64,8 +64,8 @@ int32_t vnodeSnapshotRead(SVSnapshotReader *pReader, const void **ppData, uint32
 int32_t vnodeProcessCreateTSma(SVnode *pVnode, void *pCont, uint32_t contLen);
 int32_t vnodeGetAllTableList(SVnode *pVnode, uint64_t uid, SArray *list);
 int32_t vnodeGetCtbIdList(SVnode *pVnode, int64_t suid, SArray *list);
-void *  vnodeGetIdx(SVnode *pVnode);
-void *  vnodeGetIvtIdx(SVnode *pVnode);
+void   *vnodeGetIdx(SVnode *pVnode);
+void   *vnodeGetIvtIdx(SVnode *pVnode);
 
 int32_t vnodeGetLoad(SVnode *pVnode, SVnodeLoad *pLoad);
 int32_t vnodeValidateTableHash(SVnode *pVnode, char *tableFName);
@@ -95,7 +95,7 @@ typedef struct SMetaFltParam {
   tb_uid_t suid;
   int16_t  cid;
   int16_t  type;
-  char *   val;
+  char    *val;
   bool     reverse;
   int (*filterFunc)(void *a, void *b, int16_t type);
 
@@ -136,8 +136,8 @@ SArray *tsdbRetrieveDataBlock(STsdbReader *pTsdbReadHandle, SArray *pColumnIdLis
 int32_t tsdbReaderReset(STsdbReader *pReader, SQueryTableDataCond *pCond, int32_t tWinIdx);
 int32_t tsdbGetFileBlocksDistInfo(STsdbReader *pReader, STableBlockDistInfo *pTableBlockInfo);
 int64_t tsdbGetNumOfRowsInMemTable(STsdbReader *pHandle);
-void *  tsdbGetIdx(SMeta *pMeta);
-void *  tsdbGetIvtIdx(SMeta *pMeta);
+void   *tsdbGetIdx(SMeta *pMeta);
+void   *tsdbGetIvtIdx(SMeta *pMeta);
 
 int32_t tsdbLastRowReaderOpen(void *pVnode, int32_t type, SArray *pTableIdList, int32_t *colId, int32_t numOfCols,
                               void **pReader);
@@ -146,19 +146,37 @@ int32_t tsdbLastrowReaderClose(void *pReader);
 
 // tq
 
-typedef struct STqReadHandle SStreamReader;
+typedef struct STqReader {
+  int64_t           ver;
+  const SSubmitReq *pMsg;
+  SSubmitBlk       *pBlock;
+  SSubmitMsgIter    msgIter;
+  SSubmitBlkIter    blkIter;
 
-SStreamReader *tqInitSubmitMsgScanner(SMeta *pMeta);
+  SWalReader *pWalReader;
 
-void    tqReadHandleSetColIdList(SStreamReader *pReadHandle, SArray *pColIdList);
-int32_t tqReadHandleSetTbUidList(SStreamReader *pHandle, const SArray *tbUidList);
-int32_t tqReadHandleAddTbUidList(SStreamReader *pHandle, const SArray *tbUidList);
-int32_t tqReadHandleRemoveTbUidList(SStreamReader *pHandle, const SArray *tbUidList);
+  SMeta    *pVnodeMeta;
+  SHashObj *tbIdHash;
+  SArray   *pColIdList;  // SArray<int16_t>
 
-int32_t tqReadHandleSetMsg(SStreamReader *pHandle, SSubmitReq *pMsg, int64_t ver);
-bool    tqNextDataBlock(SStreamReader *pHandle);
-bool    tqNextDataBlockFilterOut(SStreamReader *pHandle, SHashObj *filterOutUids);
-int32_t tqRetrieveDataBlock(SSDataBlock *pBlock, SStreamReader *pHandle);
+  int32_t         cachedSchemaVer;
+  int64_t         cachedSchemaSuid;
+  SSchemaWrapper *pSchemaWrapper;
+  STSchema       *pSchema;
+} STqReader;
+
+STqReader *tqOpenReader(SVnode *pVnode);
+void       tqCloseReader(STqReader *);
+
+void    tqReaderSetColIdList(STqReader *pReader, SArray *pColIdList);
+int32_t tqReaderSetTbUidList(STqReader *pReader, const SArray *tbUidList);
+int32_t tqReaderAddTbUidList(STqReader *pReader, const SArray *tbUidList);
+int32_t tqReaderRemoveTbUidList(STqReader *pReader, const SArray *tbUidList);
+
+int32_t tqReaderSetDataMsg(STqReader *pReader, SSubmitReq *pMsg, int64_t ver);
+bool    tqNextDataBlock(STqReader *pReader);
+bool    tqNextDataBlockFilterOut(STqReader *pReader, SHashObj *filterOutUids);
+int32_t tqRetrieveDataBlock(SSDataBlock *pBlock, STqReader *pReader);
 
 // sma
 int32_t smaGetTSmaDays(SVnodeCfg *pCfg, void *pCont, uint32_t contLen, int32_t *days);
@@ -214,7 +232,7 @@ struct SMetaEntry {
   int8_t   type;
   int8_t   flags;  // TODO: need refactor?
   tb_uid_t uid;
-  char *   name;
+  char    *name;
   union {
     struct {
       SSchemaWrapper schemaRow;
@@ -225,7 +243,7 @@ struct SMetaEntry {
       int64_t  ctime;
       int32_t  ttlDays;
       int32_t  commentLen;
-      char *   comment;
+      char    *comment;
       tb_uid_t suid;
       uint8_t *pTags;
     } ctbEntry;
@@ -233,7 +251,7 @@ struct SMetaEntry {
       int64_t        ctime;
       int32_t        ttlDays;
       int32_t        commentLen;
-      char *         comment;
+      char          *comment;
       int32_t        ncid;  // next column id
       SSchemaWrapper schemaRow;
     } ntbEntry;
@@ -247,17 +265,17 @@ struct SMetaEntry {
 
 struct SMetaReader {
   int32_t    flags;
-  SMeta *    pMeta;
+  SMeta     *pMeta;
   SDecoder   coder;
   SMetaEntry me;
-  void *     pBuf;
+  void      *pBuf;
   int32_t    szBuf;
 };
 
 struct SMTbCursor {
-  TBC *       pDbc;
-  void *      pKey;
-  void *      pVal;
+  TBC        *pDbc;
+  void       *pKey;
+  void       *pVal;
   int32_t     kLen;
   int32_t     vLen;
   SMetaReader mr;
diff --git a/source/dnode/vnode/src/inc/tq.h b/source/dnode/vnode/src/inc/tq.h
index 12fb500ba3e4f368d38b251d6314350706f62274..9c3bd85c7165003b4989f0f9b797550d0dc271cd 100644
--- a/source/dnode/vnode/src/inc/tq.h
+++ b/source/dnode/vnode/src/inc/tq.h
@@ -44,25 +44,6 @@ extern "C" {
 
 typedef struct STqOffsetStore STqOffsetStore;
 
-// tqRead
-
-struct STqReadHandle {
-  int64_t           ver;
-  const SSubmitReq* pMsg;
-  SSubmitBlk*       pBlock;
-  SSubmitMsgIter    msgIter;
-  SSubmitBlkIter    blkIter;
-
-  SMeta*    pVnodeMeta;
-  SHashObj* tbIdHash;
-  SArray*   pColIdList;  // SArray<int16_t>
-
-  int32_t         cachedSchemaVer;
-  int64_t         cachedSchemaSuid;
-  SSchemaWrapper* pSchemaWrapper;
-  STSchema*       pSchema;
-};
-
 // tqPush
 
 typedef struct {
@@ -102,7 +83,7 @@ typedef struct {
 typedef struct {
   int8_t subType;
 
-  SStreamReader* pExecReader[5];
+  STqReader* pExecReader[5];
   union {
     STqExecCol execCol;
     STqExecTb  execTb;
@@ -118,7 +99,7 @@ typedef struct {
   int32_t epoch;
   int8_t  fetchMeta;
 
-  // reader
+  // TODO remove
   SWalReader* pWalReader;
 
   // push
diff --git a/source/dnode/vnode/src/meta/metaTable.c b/source/dnode/vnode/src/meta/metaTable.c
index 74076d323c081c5f9d8a387cff88c467e4b32fe8..341173103c2aa2ce522a31ce7c80e27d62d60005 100644
--- a/source/dnode/vnode/src/meta/metaTable.c
+++ b/source/dnode/vnode/src/meta/metaTable.c
@@ -16,6 +16,7 @@
 #include "meta.h"
 
 static int metaSaveJsonVarToIdx(SMeta *pMeta, const SMetaEntry *pCtbEntry, const SSchema *pSchema);
+static int metaDelJsonVarFromIdx(SMeta *pMeta, const SMetaEntry *pCtbEntry, const SSchema *pSchema);
 static int metaHandleEntry(SMeta *pMeta, const SMetaEntry *pME);
 static int metaSaveToTbDb(SMeta *pMeta, const SMetaEntry *pME);
 static int metaUpdateUidIdx(SMeta *pMeta, const SMetaEntry *pME);
@@ -92,7 +93,65 @@ static int metaSaveJsonVarToIdx(SMeta *pMeta, const SMetaEntry *pCtbEntry, const
     } else if (type == TSDB_DATA_TYPE_BOOL) {
       int val = *(int *)(&pTagVal->i64);
       int len = sizeof(val);
-      term = indexTermCreate(suid, ADD_VALUE, TSDB_DATA_TYPE_INT, key, nKey, (const char *)&val, len);
+      term = indexTermCreate(suid, ADD_VALUE, TSDB_DATA_TYPE_BOOL, key, nKey, (const char *)&val, len);
+    }
+    if (term != NULL) {
+      indexMultiTermAdd(terms, term);
+    }
+  }
+  indexJsonPut(pMeta->pTagIvtIdx, terms, tuid);
+  indexMultiTermDestroy(terms);
+#endif
+  return 0;
+}
+int metaDelJsonVarFromIdx(SMeta *pMeta, const SMetaEntry *pCtbEntry, const SSchema *pSchema) {
+#ifdef USE_INVERTED_INDEX
+  if (pMeta->pTagIvtIdx == NULL || pCtbEntry == NULL) {
+    return -1;
+  }
+  void *      data = pCtbEntry->ctbEntry.pTags;
+  const char *tagName = pSchema->name;
+
+  tb_uid_t    suid = pCtbEntry->ctbEntry.suid;
+  tb_uid_t    tuid = pCtbEntry->uid;
+  const void *pTagData = pCtbEntry->ctbEntry.pTags;
+  int32_t     nTagData = 0;
+
+  SArray *pTagVals = NULL;
+  if (tTagToValArray((const STag *)data, &pTagVals) != 0) {
+    return -1;
+  }
+
+  SIndexMultiTerm *terms = indexMultiTermCreate();
+  int16_t          nCols = taosArrayGetSize(pTagVals);
+  for (int i = 0; i < nCols; i++) {
+    STagVal *pTagVal = (STagVal *)taosArrayGet(pTagVals, i);
+    char     type = pTagVal->type;
+
+    char *  key = pTagVal->pKey;
+    int32_t nKey = strlen(key);
+
+    SIndexTerm *term = NULL;
+    if (type == TSDB_DATA_TYPE_NULL) {
+      term = indexTermCreate(suid, DEL_VALUE, TSDB_DATA_TYPE_VARCHAR, key, nKey, NULL, 0);
+    } else if (type == TSDB_DATA_TYPE_NCHAR) {
+      if (pTagVal->nData > 0) {
+        char *  val = taosMemoryCalloc(1, pTagVal->nData + VARSTR_HEADER_SIZE);
+        int32_t len = taosUcs4ToMbs((TdUcs4 *)pTagVal->pData, pTagVal->nData, val + VARSTR_HEADER_SIZE);
+        memcpy(val, (uint16_t *)&len, VARSTR_HEADER_SIZE);
+        type = TSDB_DATA_TYPE_VARCHAR;
+        term = indexTermCreate(suid, DEL_VALUE, type, key, nKey, val, len);
+      } else if (pTagVal->nData == 0) {
+        term = indexTermCreate(suid, DEL_VALUE, TSDB_DATA_TYPE_VARCHAR, key, nKey, pTagVal->pData, 0);
+      }
+    } else if (type == TSDB_DATA_TYPE_DOUBLE) {
+      double val = *(double *)(&pTagVal->i64);
+      int    len = sizeof(val);
+      term = indexTermCreate(suid, DEL_VALUE, type, key, nKey, (const char *)&val, len);
+    } else if (type == TSDB_DATA_TYPE_BOOL) {
+      int val = *(int *)(&pTagVal->i64);
+      int len = sizeof(val);
+      term = indexTermCreate(suid, DEL_VALUE, TSDB_DATA_TYPE_BOOL, key, nKey, (const char *)&val, len);
     }
     if (term != NULL) {
       indexMultiTermAdd(terms, term);
@@ -434,9 +493,33 @@ static int metaDropTableByUid(SMeta *pMeta, tb_uid_t uid, int *type) {
 
   if (type) *type = e.type;
 
+  if (e.type == TSDB_CHILD_TABLE) {
+    void *tData = NULL;
+    int   tLen = 0;
+
+    if (tdbTbGet(pMeta->pUidIdx, &e.ctbEntry.suid, sizeof(tb_uid_t), &tData, &tLen) == 0) {
+      version = *(int64_t *)tData;
+      STbDbKey tbDbKey = {.uid = e.ctbEntry.suid, .version = version};
+      if (tdbTbGet(pMeta->pTbDb, &tbDbKey, sizeof(tbDbKey), &tData, &tLen) == 0) {
+        SDecoder   tdc = {0};
+        SMetaEntry stbEntry = {0};
+
+        tDecoderInit(&tdc, tData, tLen);
+        metaDecodeEntry(&tdc, &stbEntry);
+        const SSchema *pTagColumn = &stbEntry.stbEntry.schemaTag.pSchema[0];
+        if (pTagColumn->type == TSDB_DATA_TYPE_JSON) {
+          metaDelJsonVarFromIdx(pMeta, &e, pTagColumn);
+        }
+        tDecoderClear(&tdc);
+      }
+      tdbFree(tData);
+    }
+  }
+
   tdbTbDelete(pMeta->pTbDb, &(STbDbKey){.version = version, .uid = uid}, sizeof(STbDbKey), &pMeta->txn);
   tdbTbDelete(pMeta->pNameIdx, e.name, strlen(e.name) + 1, &pMeta->txn);
   tdbTbDelete(pMeta->pUidIdx, &uid, sizeof(uid), &pMeta->txn);
+
   if (e.type != TSDB_SUPER_TABLE) metaDeleteTtlIdx(pMeta, &e);
 
   if (e.type == TSDB_CHILD_TABLE) {
diff --git a/source/dnode/vnode/src/sma/smaRollup.c b/source/dnode/vnode/src/sma/smaRollup.c
index 92168a9b92da9f0dff294ffed199f79fced0a553..6f87c01be10ce9f6d080e9db07feb976787a5cec 100644
--- a/source/dnode/vnode/src/sma/smaRollup.c
+++ b/source/dnode/vnode/src/sma/smaRollup.c
@@ -277,6 +277,8 @@ static int32_t tdSetRSmaInfoItemParams(SSma *pSma, SRSmaParam *param, SRSmaInfo
       pItem->maxDelay = TSDB_MAX_ROLLUP_MAX_DELAY;
     }
     pItem->level = (idx == 0 ? TSDB_RETENTION_L1 : TSDB_RETENTION_L2);
+    smaInfo("vgId:%d table:%" PRIi64 " level:%" PRIi8 " maxdelay:%" PRIi64 " watermark:%" PRIi64 ", finally maxdelay:%"PRIi32, SMA_VID(pSma),
+            pRSmaInfo->suid, idx + 1, param->maxdelay[idx], param->watermark[idx], pItem->maxDelay);
   }
   return TSDB_CODE_SUCCESS;
 _err:
@@ -325,14 +327,14 @@ int32_t tdProcessRSmaCreateImpl(SSma *pSma, SRSmaParam *param, int64_t suid, con
     return TSDB_CODE_FAILED;
   }
 
-  SStreamReader *pReadHandle = tqInitSubmitMsgScanner(pMeta);
-  if (!pReadHandle) {
+  STqReader *pReader = tqOpenReader(pVnode);
+  if (!pReader) {
     terrno = TSDB_CODE_OUT_OF_MEMORY;
     goto _err;
   }
 
   SReadHandle handle = {
-      .streamReader = pReadHandle,
+      .tqReader = pReader,
       .meta = pMeta,
       .pMsgCb = pMsgCb,
       .vnode = pVnode,
@@ -364,7 +366,7 @@ int32_t tdProcessRSmaCreateImpl(SSma *pSma, SRSmaParam *param, int64_t suid, con
   return TSDB_CODE_SUCCESS;
 _err:
   tdFreeRSmaInfo(pRSmaInfo);
-  taosMemoryFree(pReadHandle);
+  taosMemoryFree(pReader);
   return TSDB_CODE_FAILED;
 }
 
diff --git a/source/dnode/vnode/src/tq/tq.c b/source/dnode/vnode/src/tq/tq.c
index 2dd80c5d52e90a514884fec38035b5259f347b01..e21b0fe9e8fc87eabc721b4c0a09394724625978 100644
--- a/source/dnode/vnode/src/tq/tq.c
+++ b/source/dnode/vnode/src/tq/tq.c
@@ -447,26 +447,38 @@ int32_t tqProcessVgChangeReq(STQ* pTq, char* msg, int32_t msgLen) {
     pHandle->fetchMeta = req.withMeta;
 
     pHandle->pWalReader = walOpenReader(pTq->pVnode->pWal, NULL);
-    for (int32_t i = 0; i < 5; i++) {
-      pHandle->execHandle.pExecReader[i] = tqInitSubmitMsgScanner(pTq->pVnode->pMeta);
-    }
+    /*for (int32_t i = 0; i < 5; i++) {*/
+    /*pHandle->execHandle.pExecReader[i] = tqOpenReader(pTq->pVnode);*/
+    /*}*/
     if (pHandle->execHandle.subType == TOPIC_SUB_TYPE__COLUMN) {
       pHandle->execHandle.execCol.qmsg = req.qmsg;
       req.qmsg = NULL;
       for (int32_t i = 0; i < 5; i++) {
         SReadHandle handle = {
-            .streamReader = pHandle->execHandle.pExecReader[i],
+            .tqReader = pHandle->execHandle.pExecReader[i],
             .meta = pTq->pVnode->pMeta,
             .vnode = pTq->pVnode,
             .initTableReader = true,
+            .initTqReader = true,
         };
         pHandle->execHandle.execCol.task[i] = qCreateStreamExecTaskInfo(pHandle->execHandle.execCol.qmsg, &handle);
         ASSERT(pHandle->execHandle.execCol.task[i]);
+        void* scanner = NULL;
+        qExtractStreamScanner(pHandle->execHandle.execCol.task[i], &scanner);
+        ASSERT(scanner);
+        pHandle->execHandle.pExecReader[i] = qExtractReaderFromStreamScanner(scanner);
+        ASSERT(pHandle->execHandle.pExecReader[i]);
       }
     } else if (pHandle->execHandle.subType == TOPIC_SUB_TYPE__DB) {
+      for (int32_t i = 0; i < 5; i++) {
+        pHandle->execHandle.pExecReader[i] = tqOpenReader(pTq->pVnode);
+      }
       pHandle->execHandle.execDb.pFilterOutTbUid =
           taosHashInit(64, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BIGINT), false, HASH_NO_LOCK);
     } else if (pHandle->execHandle.subType == TOPIC_SUB_TYPE__TABLE) {
+      for (int32_t i = 0; i < 5; i++) {
+        pHandle->execHandle.pExecReader[i] = tqOpenReader(pTq->pVnode);
+      }
       pHandle->execHandle.execTb.suid = req.suid;
       SArray* tbUidList = taosArrayInit(0, sizeof(int64_t));
       vnodeGetCtbIdList(pTq->pVnode, req.suid, tbUidList);
@@ -476,7 +488,7 @@ int32_t tqProcessVgChangeReq(STQ* pTq, char* msg, int32_t msgLen) {
         tqDebug("vg %d, idx %d, uid: %ld", TD_VID(pTq->pVnode), i, tbUid);
       }
       for (int32_t i = 0; i < 5; i++) {
-        tqReadHandleSetTbUidList(pHandle->execHandle.pExecReader[i], tbUidList);
+        tqReaderSetTbUidList(pHandle->execHandle.pExecReader[i], tbUidList);
       }
       taosArrayDestroy(tbUidList);
     }
@@ -532,7 +544,7 @@ int32_t tqProcessTaskDeployReq(STQ* pTq, char* msg, int32_t msgLen) {
       SReadHandle handle = {
           .meta = pTq->pVnode->pMeta,
           .vnode = pTq->pVnode,
-          .initStreamReader = 1,
+          .initTqReader = 1,
       };
       pTask->exec.executor = qCreateStreamExecTaskInfo(pTask->exec.qmsg, &handle);
     } else {
diff --git a/source/dnode/vnode/src/tq/tqExec.c b/source/dnode/vnode/src/tq/tqExec.c
index 9dd2a0258fd25a5a18c9f67a2b6ca7b1076af62a..16822e6003a12b450348a17c31538e4b46cef46c 100644
--- a/source/dnode/vnode/src/tq/tqExec.c
+++ b/source/dnode/vnode/src/tq/tqExec.c
@@ -135,8 +135,8 @@ int32_t tqLogScanExec(STQ* pTq, STqExecHandle* pExec, SSubmitReq* pReq, SMqDataR
     }
   } else if (pExec->subType == TOPIC_SUB_TYPE__TABLE) {
     pRsp->withSchema = 1;
-    SStreamReader* pReader = pExec->pExecReader[workerId];
-    tqReadHandleSetMsg(pReader, pReq, 0);
+    STqReader* pReader = pExec->pExecReader[workerId];
+    tqReaderSetDataMsg(pReader, pReq, 0);
     while (tqNextDataBlock(pReader)) {
       SSDataBlock block = {0};
       if (tqRetrieveDataBlock(&block, pReader) < 0) {
@@ -153,8 +153,8 @@ int32_t tqLogScanExec(STQ* pTq, STqExecHandle* pExec, SSubmitReq* pReq, SMqDataR
     }
   } else if (pExec->subType == TOPIC_SUB_TYPE__DB) {
     pRsp->withSchema = 1;
-    SStreamReader* pReader = pExec->pExecReader[workerId];
-    tqReadHandleSetMsg(pReader, pReq, 0);
+    STqReader* pReader = pExec->pExecReader[workerId];
+    tqReaderSetDataMsg(pReader, pReq, 0);
     while (tqNextDataBlockFilterOut(pReader, pExec->execDb.pFilterOutTbUid)) {
       SSDataBlock block = {0};
       if (tqRetrieveDataBlock(&block, pReader) < 0) {
diff --git a/source/dnode/vnode/src/tq/tqMeta.c b/source/dnode/vnode/src/tq/tqMeta.c
index c7e9c8eed6fb703227f840b5c52ba1d10ceb1be3..67fa4ed1661752aebc151a11babe42c190364d99 100644
--- a/source/dnode/vnode/src/tq/tqMeta.c
+++ b/source/dnode/vnode/src/tq/tqMeta.c
@@ -79,12 +79,12 @@ int32_t tqMetaOpen(STQ* pTq) {
     tDecodeSTqHandle(&decoder, &handle);
     handle.pWalReader = walOpenReader(pTq->pVnode->pWal, NULL);
     for (int32_t i = 0; i < 5; i++) {
-      handle.execHandle.pExecReader[i] = tqInitSubmitMsgScanner(pTq->pVnode->pMeta);
+      handle.execHandle.pExecReader[i] = tqOpenReader(pTq->pVnode);
     }
     if (handle.execHandle.subType == TOPIC_SUB_TYPE__COLUMN) {
       for (int32_t i = 0; i < 5; i++) {
         SReadHandle reader = {
-            .streamReader = handle.execHandle.pExecReader[i],
+            .tqReader = handle.execHandle.pExecReader[i],
             .meta = pTq->pVnode->pMeta,
             .pMsgCb = &pTq->pVnode->msgCb,
             .vnode = pTq->pVnode,
diff --git a/source/dnode/vnode/src/tq/tqRead.c b/source/dnode/vnode/src/tq/tqRead.c
index bc992b2211a62a25c672da55c6d954f987cb0468..53ef17a6baf1403704df388844d47ec6efd0965f 100644
--- a/source/dnode/vnode/src/tq/tqRead.c
+++ b/source/dnode/vnode/src/tq/tqRead.c
@@ -15,6 +15,11 @@
 
 #include "tq.h"
 
+int64_t tqScanLog(STQ* pTq, const STqExecHandle* pExec, SMqDataRsp* pRsp, STqOffsetVal offset) {
+  /*if ()*/
+  return 0;
+}
+
 int64_t tqFetchLog(STQ* pTq, STqHandle* pHandle, int64_t* fetchOffset, SWalCkHead** ppCkHead) {
   int32_t code = 0;
   taosThreadMutexLock(&pHandle->pWalReader->mutex);
@@ -73,53 +78,107 @@ END:
   return code;
 }
 
-SStreamReader* tqInitSubmitMsgScanner(SMeta* pMeta) {
-  SStreamReader* pReadHandle = taosMemoryMalloc(sizeof(SStreamReader));
-  if (pReadHandle == NULL) {
+STqReader* tqOpenReader(SVnode* pVnode) {
+  STqReader* pReader = taosMemoryMalloc(sizeof(STqReader));
+  if (pReader == NULL) {
     return NULL;
   }
-  pReadHandle->pVnodeMeta = pMeta;
-  pReadHandle->pMsg = NULL;
-  pReadHandle->ver = -1;
-  pReadHandle->pColIdList = NULL;
-  pReadHandle->cachedSchemaVer = 0;
-  pReadHandle->cachedSchemaSuid = 0;
-  pReadHandle->pSchema = NULL;
-  pReadHandle->pSchemaWrapper = NULL;
-  pReadHandle->tbIdHash = NULL;
-  return pReadHandle;
+
+  // TODO open
+  /*pReader->pWalReader = walOpenReader(pVnode->pWal, NULL);*/
+
+  pReader->pVnodeMeta = pVnode->pMeta;
+  pReader->pMsg = NULL;
+  pReader->ver = -1;
+  pReader->pColIdList = NULL;
+  pReader->cachedSchemaVer = 0;
+  pReader->cachedSchemaSuid = 0;
+  pReader->pSchema = NULL;
+  pReader->pSchemaWrapper = NULL;
+  pReader->tbIdHash = NULL;
+  return pReader;
+}
+
+void tqCloseReader(STqReader* pReader) {
+  // close wal reader
+  // free cached schema
+  // free hash
+  taosMemoryFree(pReader);
+}
+
+int32_t tqNextBlock(STqReader* pReader, SFetchRet* ret) {
+  bool fromProcessedMsg = pReader->pMsg != NULL;
+
+  while (1) {
+    if (!fromProcessedMsg) {
+      if (walNextValidMsg(pReader->pWalReader) < 0) {
+        ret->fetchType = FETCH_TYPE__NONE;
+        return -1;
+      }
+      void* body = pReader->pWalReader->pHead->head.body;
+      if (pReader->pWalReader->pHead->head.msgType != TDMT_VND_SUBMIT) {
+        // TODO do filter
+        ret->fetchType = FETCH_TYPE__META;
+        ret->meta = pReader->pWalReader->pHead->head.body;
+        return 0;
+      } else {
+        tqReaderSetDataMsg(pReader, body, pReader->pWalReader->pHead->head.version);
+      }
+    }
+
+    while (tqNextDataBlock(pReader)) {
+      memset(&ret->data, 0, sizeof(SSDataBlock));
+      int32_t code = tqRetrieveDataBlock(&ret->data, pReader);
+      if (code != 0 || ret->data.info.rows == 0) {
+        if (fromProcessedMsg) {
+          ret->fetchType = FETCH_TYPE__NONE;
+          return 0;
+        } else {
+          break;
+        }
+      }
+
+      ret->fetchType = FETCH_TYPE__DATA;
+      return 0;
+    }
+
+    if (fromProcessedMsg) {
+      ret->fetchType = FETCH_TYPE__NONE;
+      return 0;
+    }
+  }
 }
 
-int32_t tqReadHandleSetMsg(SStreamReader* pReadHandle, SSubmitReq* pMsg, int64_t ver) {
-  pReadHandle->pMsg = pMsg;
+int32_t tqReaderSetDataMsg(STqReader* pReader, SSubmitReq* pMsg, int64_t ver) {
+  pReader->pMsg = pMsg;
 
-  if (tInitSubmitMsgIter(pMsg, &pReadHandle->msgIter) < 0) return -1;
+  if (tInitSubmitMsgIter(pMsg, &pReader->msgIter) < 0) return -1;
   while (true) {
-    if (tGetSubmitMsgNext(&pReadHandle->msgIter, &pReadHandle->pBlock) < 0) return -1;
-    if (pReadHandle->pBlock == NULL) break;
+    if (tGetSubmitMsgNext(&pReader->msgIter, &pReader->pBlock) < 0) return -1;
+    if (pReader->pBlock == NULL) break;
   }
 
-  if (tInitSubmitMsgIter(pMsg, &pReadHandle->msgIter) < 0) return -1;
-  pReadHandle->ver = ver;
-  memset(&pReadHandle->blkIter, 0, sizeof(SSubmitBlkIter));
+  if (tInitSubmitMsgIter(pMsg, &pReader->msgIter) < 0) return -1;
+  pReader->ver = ver;
+  memset(&pReader->blkIter, 0, sizeof(SSubmitBlkIter));
   return 0;
 }
 
-bool tqNextDataBlock(SStreamReader* pHandle) {
-  if (pHandle->pMsg == NULL) return false;
+bool tqNextDataBlock(STqReader* pReader) {
+  if (pReader->pMsg == NULL) return false;
   while (1) {
-    if (tGetSubmitMsgNext(&pHandle->msgIter, &pHandle->pBlock) < 0) {
+    if (tGetSubmitMsgNext(&pReader->msgIter, &pReader->pBlock) < 0) {
       return false;
     }
-    if (pHandle->pBlock == NULL) {
-      pHandle->pMsg = NULL;
+    if (pReader->pBlock == NULL) {
+      pReader->pMsg = NULL;
       return false;
     }
 
-    if (pHandle->tbIdHash == NULL) {
+    if (pReader->tbIdHash == NULL) {
       return true;
     }
-    void* ret = taosHashGet(pHandle->tbIdHash, &pHandle->msgIter.uid, sizeof(int64_t));
+    void* ret = taosHashGet(pReader->tbIdHash, &pReader->msgIter.uid, sizeof(int64_t));
     /*tqDebug("search uid %ld", pHandle->msgIter.uid);*/
     if (ret != NULL) {
       /*tqDebug("find   uid %ld", pHandle->msgIter.uid);*/
@@ -129,7 +188,7 @@ bool tqNextDataBlock(SStreamReader* pHandle) {
   return false;
 }
 
-bool tqNextDataBlockFilterOut(SStreamReader* pHandle, SHashObj* filterOutUids) {
+bool tqNextDataBlockFilterOut(STqReader* pHandle, SHashObj* filterOutUids) {
   while (1) {
     if (tGetSubmitMsgNext(&pHandle->msgIter, &pHandle->pBlock) < 0) {
       return false;
@@ -145,38 +204,38 @@ bool tqNextDataBlockFilterOut(SStreamReader* pHandle, SHashObj* filterOutUids) {
   return false;
 }
 
-int32_t tqRetrieveDataBlock(SSDataBlock* pBlock, SStreamReader* pHandle) {
+int32_t tqRetrieveDataBlock(SSDataBlock* pBlock, STqReader* pReader) {
   // TODO: cache multiple schema
-  int32_t sversion = htonl(pHandle->pBlock->sversion);
-  if (pHandle->cachedSchemaSuid == 0 || pHandle->cachedSchemaVer != sversion ||
-      pHandle->cachedSchemaSuid != pHandle->msgIter.suid) {
-    if (pHandle->pSchema) taosMemoryFree(pHandle->pSchema);
-    pHandle->pSchema = metaGetTbTSchema(pHandle->pVnodeMeta, pHandle->msgIter.uid, sversion);
-    if (pHandle->pSchema == NULL) {
+  int32_t sversion = htonl(pReader->pBlock->sversion);
+  if (pReader->cachedSchemaSuid == 0 || pReader->cachedSchemaVer != sversion ||
+      pReader->cachedSchemaSuid != pReader->msgIter.suid) {
+    if (pReader->pSchema) taosMemoryFree(pReader->pSchema);
+    pReader->pSchema = metaGetTbTSchema(pReader->pVnodeMeta, pReader->msgIter.uid, sversion);
+    if (pReader->pSchema == NULL) {
       tqWarn("cannot found tsschema for table: uid: %ld (suid: %ld), version %d, possibly dropped table",
-             pHandle->msgIter.uid, pHandle->msgIter.suid, pHandle->cachedSchemaVer);
+             pReader->msgIter.uid, pReader->msgIter.suid, pReader->cachedSchemaVer);
       /*ASSERT(0);*/
       terrno = TSDB_CODE_TQ_TABLE_SCHEMA_NOT_FOUND;
       return -1;
     }
 
-    if (pHandle->pSchemaWrapper) tDeleteSSchemaWrapper(pHandle->pSchemaWrapper);
-    pHandle->pSchemaWrapper = metaGetTableSchema(pHandle->pVnodeMeta, pHandle->msgIter.uid, sversion, true);
-    if (pHandle->pSchemaWrapper == NULL) {
+    if (pReader->pSchemaWrapper) tDeleteSSchemaWrapper(pReader->pSchemaWrapper);
+    pReader->pSchemaWrapper = metaGetTableSchema(pReader->pVnodeMeta, pReader->msgIter.uid, sversion, true);
+    if (pReader->pSchemaWrapper == NULL) {
       tqWarn("cannot found schema wrapper for table: suid: %ld, version %d, possibly dropped table",
-             pHandle->msgIter.uid, pHandle->cachedSchemaVer);
+             pReader->msgIter.uid, pReader->cachedSchemaVer);
       /*ASSERT(0);*/
       terrno = TSDB_CODE_TQ_TABLE_SCHEMA_NOT_FOUND;
       return -1;
     }
-    pHandle->cachedSchemaVer = sversion;
-    pHandle->cachedSchemaSuid = pHandle->msgIter.suid;
+    pReader->cachedSchemaVer = sversion;
+    pReader->cachedSchemaSuid = pReader->msgIter.suid;
   }
 
-  STSchema*       pTschema = pHandle->pSchema;
-  SSchemaWrapper* pSchemaWrapper = pHandle->pSchemaWrapper;
+  STSchema*       pTschema = pReader->pSchema;
+  SSchemaWrapper* pSchemaWrapper = pReader->pSchemaWrapper;
 
-  int32_t colNumNeed = taosArrayGetSize(pHandle->pColIdList);
+  int32_t colNumNeed = taosArrayGetSize(pReader->pColIdList);
 
   if (colNumNeed == 0) {
     int32_t colMeta = 0;
@@ -199,7 +258,7 @@ int32_t tqRetrieveDataBlock(SSDataBlock* pBlock, SStreamReader* pHandle) {
     while (colMeta < pSchemaWrapper->nCols && colNeed < colNumNeed) {
       SSchema* pColSchema = &pSchemaWrapper->pSchema[colMeta];
       col_id_t colIdSchema = pColSchema->colId;
-      col_id_t colIdNeed = *(col_id_t*)taosArrayGet(pHandle->pColIdList, colNeed);
+      col_id_t colIdNeed = *(col_id_t*)taosArrayGet(pReader->pColIdList, colNeed);
       if (colIdSchema < colIdNeed) {
         colMeta++;
       } else if (colIdSchema > colIdNeed) {
@@ -216,7 +275,7 @@ int32_t tqRetrieveDataBlock(SSDataBlock* pBlock, SStreamReader* pHandle) {
     }
   }
 
-  if (blockDataEnsureCapacity(pBlock, pHandle->msgIter.numOfRows) < 0) {
+  if (blockDataEnsureCapacity(pBlock, pReader->msgIter.numOfRows) < 0) {
     goto FAIL;
   }
 
@@ -227,13 +286,12 @@ int32_t tqRetrieveDataBlock(SSDataBlock* pBlock, SStreamReader* pHandle) {
   STSRow* row;
   int32_t curRow = 0;
 
-  tInitSubmitBlkIter(&pHandle->msgIter, pHandle->pBlock, &pHandle->blkIter);
+  tInitSubmitBlkIter(&pReader->msgIter, pReader->pBlock, &pReader->blkIter);
 
-  pBlock->info.groupId = 0;
-  pBlock->info.uid = pHandle->msgIter.uid;
-  pBlock->info.rows = pHandle->msgIter.numOfRows;
+  pBlock->info.uid = pReader->msgIter.uid;
+  pBlock->info.rows = pReader->msgIter.numOfRows;
 
-  while ((row = tGetSubmitBlkNext(&pHandle->blkIter)) != NULL) {
+  while ((row = tGetSubmitBlkNext(&pReader->blkIter)) != NULL) {
     tdSTSRowIterReset(&iter, row);
     // get all wanted col of that block
     for (int32_t i = 0; i < colActual; i++) {
@@ -255,9 +313,9 @@ FAIL:
   return -1;
 }
 
-void tqReadHandleSetColIdList(SStreamReader* pReadHandle, SArray* pColIdList) { pReadHandle->pColIdList = pColIdList; }
+void tqReaderSetColIdList(STqReader* pReadHandle, SArray* pColIdList) { pReadHandle->pColIdList = pColIdList; }
 
-int tqReadHandleSetTbUidList(SStreamReader* pHandle, const SArray* tbUidList) {
+int tqReaderSetTbUidList(STqReader* pHandle, const SArray* tbUidList) {
   if (pHandle->tbIdHash) {
     taosHashClear(pHandle->tbIdHash);
   }
@@ -276,7 +334,7 @@ int tqReadHandleSetTbUidList(SStreamReader* pHandle, const SArray* tbUidList) {
   return 0;
 }
 
-int tqReadHandleAddTbUidList(SStreamReader* pHandle, const SArray* tbUidList) {
+int tqReaderAddTbUidList(STqReader* pHandle, const SArray* tbUidList) {
   if (pHandle->tbIdHash == NULL) {
     pHandle->tbIdHash = taosHashInit(64, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BIGINT), true, HASH_NO_LOCK);
     if (pHandle->tbIdHash == NULL) {
@@ -293,7 +351,7 @@ int tqReadHandleAddTbUidList(SStreamReader* pHandle, const SArray* tbUidList) {
   return 0;
 }
 
-int tqReadHandleRemoveTbUidList(SStreamReader* pHandle, const SArray* tbUidList) {
+int tqReaderRemoveTbUidList(STqReader* pHandle, const SArray* tbUidList) {
   ASSERT(pHandle->tbIdHash != NULL);
 
   for (int32_t i = 0; i < taosArrayGetSize(tbUidList); i++) {
diff --git a/source/libs/executor/inc/executorimpl.h b/source/libs/executor/inc/executorimpl.h
index 105bf1476dc4663415b9e575f6d7361ee1b7923d..348806992551343edc76d60b2fd5d766c52f2f39 100644
--- a/source/libs/executor/inc/executorimpl.h
+++ b/source/libs/executor/inc/executorimpl.h
@@ -365,7 +365,7 @@ typedef struct SStreamScanInfo {
   int32_t         blockType;        // current block type
   int32_t         validBlockIndex;  // Is current data has returned?
   uint64_t        numOfExec;        // execution times
-  void*           streamReader;// stream block reader handle
+  STqReader*           tqReader;
 
   int32_t         tsArrayIndex;
   SArray*         tsArray;
@@ -383,6 +383,11 @@ typedef struct SStreamScanInfo {
   SSDataBlock*    pPullDataRes;             // pull data SSDataBlock
   SSDataBlock*    pDeleteDataRes;             // delete data SSDataBlock
   int32_t         deleteDataIndex;
+
+  // status for tmq
+  //SSchemaWrapper schema;
+  STqOffset offset;
+
 } SStreamScanInfo;
 
 typedef struct SSysTableScanInfo {
diff --git a/source/libs/executor/src/executor.c b/source/libs/executor/src/executor.c
index 0155cdd416f29f310c7a1d99ef6beb2bf14d3c66..a83565cbe0553d823f79e6787d2f9ee05cd598f9 100644
--- a/source/libs/executor/src/executor.c
+++ b/source/libs/executor/src/executor.c
@@ -45,7 +45,7 @@ static int32_t doSetStreamBlock(SOperatorInfo* pOperator, void* input, size_t nu
     pInfo->blockType = type;
 
     if (type == STREAM_INPUT__DATA_SUBMIT) {
-      if (tqReadHandleSetMsg(pInfo->streamReader, input, 0) < 0) {
+      if (tqReaderSetDataMsg(pInfo->tqReader, input, 0) < 0) {
         qError("submit msg messed up when initing stream block, %s" PRIx64, id);
         return TSDB_CODE_QRY_APP_ERROR;
       }
@@ -105,7 +105,7 @@ int32_t qSetMultiStreamInput(qTaskInfo_t tinfo, const void* pBlocks, size_t numO
   return code;
 }
 
-qTaskInfo_t qCreateStreamExecTaskInfo(void* msg, void* streamReadHandle) {
+qTaskInfo_t qCreateStreamExecTaskInfo(void* msg, SReadHandle* readers) {
   if (msg == NULL) {
     return NULL;
   }
@@ -120,7 +120,7 @@ qTaskInfo_t qCreateStreamExecTaskInfo(void* msg, void* streamReadHandle) {
   }
 
   qTaskInfo_t pTaskInfo = NULL;
-  code = qCreateExecTask(streamReadHandle, 0, 0, plan, &pTaskInfo, NULL, NULL, OPTR_EXEC_MODEL_STREAM);
+  code = qCreateExecTask(readers, 0, 0, plan, &pTaskInfo, NULL, NULL, OPTR_EXEC_MODEL_STREAM);
   if (code != TSDB_CODE_SUCCESS) {
     // TODO: destroy SSubplan & pTaskInfo
     terrno = code;
@@ -174,11 +174,11 @@ int32_t qUpdateQualifiedTableId(qTaskInfo_t tinfo, const SArray* tableIdList, bo
     SArray* qa = filterQualifiedChildTables(pScanInfo, tableIdList);
 
     qDebug(" %d qualified child tables added into stream scanner", (int32_t)taosArrayGetSize(qa));
-    code = tqReadHandleAddTbUidList(pScanInfo->streamReader, qa);
+    code = tqReaderAddTbUidList(pScanInfo->tqReader, qa);
     taosArrayDestroy(qa);
   } else {  // remove the table id in current list
     qDebug(" %d remove child tables from the stream scanner", (int32_t)taosArrayGetSize(tableIdList));
-    code = tqReadHandleRemoveTbUidList(pScanInfo->streamReader, tableIdList);
+    code = tqReaderRemoveTbUidList(pScanInfo->tqReader, tableIdList);
   }
 
   return code;
diff --git a/source/libs/executor/src/executorMain.c b/source/libs/executor/src/executorMain.c
index 7f84b4c1743e49c8cd6c42d452c970bc5ecb49a7..d5e546f466b868fc8373d245c1888f2ebcb0f730 100644
--- a/source/libs/executor/src/executorMain.c
+++ b/source/libs/executor/src/executorMain.c
@@ -236,6 +236,37 @@ int32_t qDeserializeTaskStatus(qTaskInfo_t tinfo, const char* pInput, int32_t le
   return decodeOperator(pTaskInfo->pRoot, pInput, len);
 }
 
+int32_t qExtractStreamScanner(qTaskInfo_t tinfo, void** scanner) {
+  SExecTaskInfo* pTaskInfo = (SExecTaskInfo*)tinfo;
+  SOperatorInfo* pOperator = pTaskInfo->pRoot;
+
+  while (1) {
+    uint8_t type = pOperator->operatorType;
+    if (type == QUERY_NODE_PHYSICAL_PLAN_STREAM_SCAN) {
+      *scanner = pOperator->info;
+      return 0;
+    } else {
+      ASSERT(pOperator->numOfDownstream == 1);
+      pOperator = pOperator->pDownstream[0];
+    }
+  }
+}
+
+void* qExtractReaderFromStreamScanner(void* scanner) {
+  SStreamScanInfo* pInfo = scanner;
+  return (void*)pInfo->tqReader;
+}
+
+const SSchemaWrapper* qExtractSchemaFromStreamScanner(void* scanner) {
+  SStreamScanInfo* pInfo = scanner;
+  return pInfo->tqReader->pSchemaWrapper;
+}
+
+const STqOffset* qExtractStatusFromStreamScanner(void* scanner) {
+  SStreamScanInfo* pInfo = scanner;
+  return &pInfo->offset;
+}
+
 int32_t qStreamPrepareScan(qTaskInfo_t tinfo, uint64_t uid, int64_t ts) {
   SExecTaskInfo* pTaskInfo = (SExecTaskInfo*)tinfo;
 
diff --git a/source/libs/executor/src/executorimpl.c b/source/libs/executor/src/executorimpl.c
index 4c7b2c910217e2cdd18ccdf8dd13f8c372ac6b41..ab08cfd2b3382890f3570c2d22512a7046049667 100644
--- a/source/libs/executor/src/executorimpl.c
+++ b/source/libs/executor/src/executorimpl.c
@@ -2844,7 +2844,7 @@ int32_t getTableScanInfo(SOperatorInfo* pOperator, int32_t* order, int32_t* scan
 }
 
 int32_t doPrepareScan(SOperatorInfo* pOperator, uint64_t uid, int64_t ts) {
-  int32_t type = pOperator->operatorType;
+  uint8_t type = pOperator->operatorType;
 
   pOperator->status = OP_OPENED;
 
@@ -4346,11 +4346,11 @@ SOperatorInfo* createOperatorTree(SPhysiNode* pPhyNode, SExecTaskInfo* pTaskInfo
     } else if (QUERY_NODE_PHYSICAL_PLAN_LAST_ROW_SCAN == type) {
       SLastRowScanPhysiNode* pScanNode = (SLastRowScanPhysiNode*)pPhyNode;
 
-//      int32_t code = createScanTableListInfo(pTableScanNode, pHandle, pTableListInfo, queryId, taskId);
-//      if (code) {
-//        pTaskInfo->code = code;
-//        return NULL;
-//      }
+      //      int32_t code = createScanTableListInfo(pTableScanNode, pHandle, pTableListInfo, queryId, taskId);
+      //      if (code) {
+      //        pTaskInfo->code = code;
+      //        return NULL;
+      //      }
 
       int32_t code = extractTableSchemaVersion(pHandle, pScanNode->uid, pTaskInfo);
       if (code != TSDB_CODE_SUCCESS) {
@@ -4407,8 +4407,8 @@ SOperatorInfo* createOperatorTree(SPhysiNode* pPhyNode, SExecTaskInfo* pTaskInfo
       pOptr = createGroupOperatorInfo(ops[0], pExprInfo, num, pResBlock, pColList, pAggNode->node.pConditions,
                                       pScalarExprInfo, numOfScalarExpr, pTaskInfo);
     } else {
-      pOptr =
-          createAggregateOperatorInfo(ops[0], pExprInfo, num, pResBlock, pAggNode->node.pConditions, pScalarExprInfo, numOfScalarExpr, pTaskInfo);
+      pOptr = createAggregateOperatorInfo(ops[0], pExprInfo, num, pResBlock, pAggNode->node.pConditions,
+                                          pScalarExprInfo, numOfScalarExpr, pTaskInfo);
     }
   } else if (QUERY_NODE_PHYSICAL_PLAN_HASH_INTERVAL == type || QUERY_NODE_PHYSICAL_PLAN_STREAM_INTERVAL == type) {
     SIntervalPhysiNode* pIntervalPhyNode = (SIntervalPhysiNode*)pPhyNode;
@@ -4575,7 +4575,8 @@ SArray* extractColumnInfo(SNodeList* pNodeList) {
   return pList;
 }
 
-STsdbReader* doCreateDataReader(STableScanPhysiNode* pTableScanNode, SReadHandle* pHandle, STableListInfo* pTableListInfo, const char* idstr) {
+STsdbReader* doCreateDataReader(STableScanPhysiNode* pTableScanNode, SReadHandle* pHandle,
+                                STableListInfo* pTableListInfo, const char* idstr) {
   int32_t code = getTableList(pHandle->meta, pHandle->vnode, &pTableScanNode->scan, pTableListInfo);
   if (code != TSDB_CODE_SUCCESS) {
     goto _error;
@@ -4819,7 +4820,6 @@ int32_t createExecTaskInfoImpl(SSubplan* pPlan, SExecTaskInfo** pTaskInfo, SRead
   (*pTaskInfo)->pRoot = createOperatorTree(pPlan->pNode, *pTaskInfo, pHandle, queryId, taskId,
                                            &(*pTaskInfo)->tableqinfoList, pPlan->user);
 
-
   if (NULL == (*pTaskInfo)->pRoot) {
     code = (*pTaskInfo)->code;
     goto _complete;
diff --git a/source/libs/executor/src/scanoperator.c b/source/libs/executor/src/scanoperator.c
index aae85bbbc18c9b5e080b85e21178a587f9599a7d..68cda52b109536006718aea3919258167248a023 100644
--- a/source/libs/executor/src/scanoperator.c
+++ b/source/libs/executor/src/scanoperator.c
@@ -1232,38 +1232,33 @@ static SSDataBlock* doStreamScan(SOperatorInfo* pOperator) {
     SDataBlockInfo* pBlockInfo = &pInfo->pRes->info;
     blockDataCleanup(pInfo->pRes);
 
-    while (tqNextDataBlock(pInfo->streamReader)) {
+    while (tqNextDataBlock(pInfo->tqReader)) {
       SSDataBlock block = {0};
 
       // todo refactor
-      int32_t code = tqRetrieveDataBlock(&block, pInfo->streamReader);
+      int32_t code = tqRetrieveDataBlock(&block, pInfo->tqReader);
 
-      uint64_t groupId = block.info.groupId;
-      uint64_t uid = block.info.uid;
-      int32_t  numOfRows = block.info.rows;
-
-      if (code != TSDB_CODE_SUCCESS || numOfRows == 0) {
+      if (code != TSDB_CODE_SUCCESS || block.info.rows == 0) {
         pTaskInfo->code = code;
         return NULL;
       }
 
-      pInfo->pRes->info.groupId = groupId;
-      pInfo->pRes->info.rows = numOfRows;
-      pInfo->pRes->info.uid = uid;
+      pInfo->pRes->info.rows = block.info.rows;
+      pInfo->pRes->info.uid = block.info.uid;
       pInfo->pRes->info.type = STREAM_NORMAL;
-      pInfo->pRes->info.capacity = numOfRows;
+      pInfo->pRes->info.capacity = block.info.rows;
 
       // for generating rollup SMA result, each time is an independent time serie.
       // TODO temporarily used, when the statement of "partition by tbname" is ready, remove this
       if (pInfo->assignBlockUid) {
-        pInfo->pRes->info.groupId = uid;
-      } else {
-        pInfo->pRes->info.groupId = groupId;
+        pInfo->pRes->info.groupId = block.info.uid;
       }
 
-      uint64_t* groupIdPre = taosHashGet(pOperator->pTaskInfo->tableqinfoList.map, &uid, sizeof(int64_t));
+      uint64_t* groupIdPre = taosHashGet(pOperator->pTaskInfo->tableqinfoList.map, &block.info.uid, sizeof(int64_t));
       if (groupIdPre) {
         pInfo->pRes->info.groupId = *groupIdPre;
+      } else {
+        pInfo->pRes->info.groupId = 0;
       }
 
       // todo extract method
@@ -1413,13 +1408,13 @@ SOperatorInfo* createStreamScanOperatorInfo(SReadHandle* pHandle, STableScanPhys
       }
     }
 
-    if (pHandle->initStreamReader) {
-      ASSERT(pHandle->streamReader == NULL);
-      pInfo->streamReader = tqInitSubmitMsgScanner(pHandle->meta);
-      ASSERT(pInfo->streamReader);
+    if (pHandle->initTqReader) {
+      ASSERT(pHandle->tqReader == NULL);
+      pInfo->tqReader = tqOpenReader(pHandle->vnode);
+      ASSERT(pInfo->tqReader);
     } else {
-      ASSERT(pHandle->streamReader);
-      pInfo->streamReader = pHandle->streamReader;
+      ASSERT(pHandle->tqReader);
+      pInfo->tqReader = pHandle->tqReader;
     }
 
     if (pSTInfo->interval.interval > 0) {
@@ -1435,9 +1430,9 @@ SOperatorInfo* createStreamScanOperatorInfo(SReadHandle* pHandle, STableScanPhys
     pInfo->tableUid = pScanPhyNode->uid;
 
     // set the extract column id to streamHandle
-    tqReadHandleSetColIdList(pInfo->streamReader, pColIds);
+    tqReaderSetColIdList(pInfo->tqReader, pColIds);
     SArray* tableIdList = extractTableIdList(&pTaskInfo->tableqinfoList);
-    int32_t code = tqReadHandleSetTbUidList(pInfo->streamReader, tableIdList);
+    int32_t code = tqReaderSetTbUidList(pInfo->tqReader, tableIdList);
     if (code != 0) {
       taosArrayDestroy(tableIdList);
       goto _error;
diff --git a/source/libs/executor/src/timewindowoperator.c b/source/libs/executor/src/timewindowoperator.c
index a89e166e8a5e1413813c7c0d822289e87d7c8470..9763f86838f87b3bc78b3d2c60e3f258b673ba64 100644
--- a/source/libs/executor/src/timewindowoperator.c
+++ b/source/libs/executor/src/timewindowoperator.c
@@ -3189,7 +3189,7 @@ SResultWindowInfo* getCurSessionWindow(SStreamAggSupporter* pAggSup, TSKEY start
       *pIndex = index + 1;
       return pWin;
     } else if (endTs != INT64_MIN && isInWindow(pWin, endTs, gap)) {
-      *pIndex = index;
+      *pIndex = index + 1;
       return pWin;
     }
   }
@@ -3442,7 +3442,7 @@ void deleteWindow(SArray* pWinInfos, int32_t index) {
   taosArrayRemove(pWinInfos, index);
 }
 
-static void doDeleteSessionWindows(SStreamAggSupporter* pAggSup, SSDataBlock* pBlock, int64_t gap, SArray* result) {
+static void doDeleteTimeWindows(SStreamAggSupporter* pAggSup, SSDataBlock* pBlock, int64_t gap, SArray* result) {
   SColumnInfoData* pStartTsCol = taosArrayGet(pBlock->pDataBlock, START_TS_COLUMN_INDEX);
   TSKEY* startDatas = (TSKEY*)pStartTsCol->pData;
   SColumnInfoData* pEndTsCol = taosArrayGet(pBlock->pDataBlock, END_TS_COLUMN_INDEX);
@@ -3700,13 +3700,13 @@ static SSDataBlock* doStreamSessionAgg(SOperatorInfo* pOperator) {
     } else if (pBlock->info.type == STREAM_DELETE_DATA || pBlock->info.type == STREAM_DELETE_RESULT) {
       SArray* pWins = taosArrayInit(16, sizeof(SResultWindowInfo));
       // gap must be 0
-      doDeleteSessionWindows(&pInfo->streamAggSup, pBlock, 0, pWins);
+      doDeleteTimeWindows(&pInfo->streamAggSup, pBlock, 0, pWins);
       if (IS_FINAL_OP(pInfo)) {
         int32_t                        childIndex = getChildIndex(pBlock);
         SOperatorInfo*                 pChildOp = taosArrayGetP(pInfo->pChildren, childIndex);
         SStreamSessionAggOperatorInfo* pChildInfo = pChildOp->info;
         // gap must be 0
-        doDeleteSessionWindows(&pChildInfo->streamAggSup, pBlock, 0, NULL);
+        doDeleteTimeWindows(&pChildInfo->streamAggSup, pBlock, 0, NULL);
         rebuildTimeWindow(pInfo, pWins, pBlock->info.groupId, pOperator->exprSupp.numOfExprs, pOperator);
       }
       copyDeleteWindowInfo(pWins, pInfo->pStDeleted);
@@ -3840,7 +3840,7 @@ static SSDataBlock* doStreamSessionSemiAgg(SOperatorInfo* pOperator) {
       break;
     } else if (pBlock->info.type == STREAM_DELETE_DATA || pBlock->info.type == STREAM_DELETE_RESULT) {
       // gap must be 0
-      doDeleteSessionWindows(&pInfo->streamAggSup, pBlock, 0, NULL); 
+      doDeleteTimeWindows(&pInfo->streamAggSup, pBlock, 0, NULL); 
       copyDataBlock(pInfo->pDelRes, pBlock);
       pInfo->pDelRes->info.type = STREAM_DELETE_RESULT;
       break;
@@ -4232,6 +4232,12 @@ static SSDataBlock* doStreamStateAgg(SOperatorInfo* pOperator) {
       doClearStateWindows(&pInfo->streamAggSup, pBlock, pInfo->primaryTsIndex, &pInfo->stateCol, pInfo->stateCol.slotId,
                           pSeUpdated, pInfo->pSeDeleted);
       continue;
+    } else if (pBlock->info.type == STREAM_DELETE_DATA) {
+      SArray* pWins = taosArrayInit(16, sizeof(SResultWindowInfo));
+      doDeleteTimeWindows(&pInfo->streamAggSup, pBlock, 0, pWins);
+      copyDeleteWindowInfo(pWins, pInfo->pSeDeleted);
+      taosArrayDestroy(pWins);
+      continue;
     } else if (pBlock->info.type == STREAM_GET_ALL) {
       getAllSessionWindow(pInfo->streamAggSup.pResultRows, pUpdated, getResWinForState);
       continue;
diff --git a/source/libs/sync/inc/syncInt.h b/source/libs/sync/inc/syncInt.h
index 8936cd6ed9bfc6ee33d19d5dcca8ea527b71c837..9742f93824120f4f6ca21401c695de7f2524d240 100644
--- a/source/libs/sync/inc/syncInt.h
+++ b/source/libs/sync/inc/syncInt.h
@@ -67,7 +67,6 @@ typedef struct SSyncNode {
   char        path[TSDB_FILENAME_LEN];
   char        raftStorePath[TSDB_FILENAME_LEN * 2];
   char        configPath[TSDB_FILENAME_LEN * 2];
-  int32_t     batchSize;
 
   // sync io
   SWal*         pWal;
diff --git a/source/libs/sync/src/syncAppendEntries.c b/source/libs/sync/src/syncAppendEntries.c
index 885ab1acae068d8d8f98fdde20be2eea2cc3d0c9..2d511b6003ab2e5d310a060f734b123f8964ef43 100644
--- a/source/libs/sync/src/syncAppendEntries.c
+++ b/source/libs/sync/src/syncAppendEntries.c
@@ -842,8 +842,8 @@ int32_t syncNodeOnAppendEntriesSnapshot2Cb(SSyncNode* ths, SyncAppendEntriesBatc
       do {
         char logBuf[128];
         snprintf(logBuf, sizeof(logBuf),
-                 "recv sync-append-entries-batch, fake match2, pre-index:%ld, pre-term:%lu, datalen:%d",
-                 pMsg->prevLogIndex, pMsg->prevLogTerm, pMsg->dataLen);
+                 "recv sync-append-entries-batch, fake match2, {pre-index:%ld, pre-term:%lu, datalen:%d, datacount:%d}",
+                 pMsg->prevLogIndex, pMsg->prevLogTerm, pMsg->dataLen, pMsg->dataCount);
         syncNodeEventLog(ths, logBuf);
       } while (0);
 
@@ -876,7 +876,7 @@ int32_t syncNodeOnAppendEntriesSnapshot2Cb(SSyncNode* ths, SyncAppendEntriesBatc
           code = syncNodePreCommit(ths, pAppendEntry);
           ASSERT(code == 0);
 
-          syncEntryDestory(pAppendEntry);
+          // syncEntryDestory(pAppendEntry);
         }
 
         // fsync once
@@ -931,8 +931,8 @@ int32_t syncNodeOnAppendEntriesSnapshot2Cb(SSyncNode* ths, SyncAppendEntriesBatc
       do {
         char logBuf[128];
         snprintf(logBuf, sizeof(logBuf),
-                 "recv sync-append-entries-batch, not match, pre-index:%ld, pre-term:%lu, datalen:%d",
-                 pMsg->prevLogIndex, pMsg->prevLogTerm, pMsg->dataLen);
+                 "recv sync-append-entries-batch, not match, {pre-index:%ld, pre-term:%lu, datalen:%d, datacount:%d}",
+                 pMsg->prevLogIndex, pMsg->prevLogTerm, pMsg->dataLen, pMsg->dataCount);
         syncNodeEventLog(ths, logBuf);
       } while (0);
 
@@ -976,8 +976,9 @@ int32_t syncNodeOnAppendEntriesSnapshot2Cb(SSyncNode* ths, SyncAppendEntriesBatc
 
       do {
         char logBuf[128];
-        snprintf(logBuf, sizeof(logBuf), "recv sync-append-entries, match, pre-index:%ld, pre-term:%lu, datalen:%d",
-                 pMsg->prevLogIndex, pMsg->prevLogTerm, pMsg->dataLen);
+        snprintf(logBuf, sizeof(logBuf),
+                 "recv sync-append-entries, match, {pre-index:%ld, pre-term:%lu, datalen:%d, datacount:%d}",
+                 pMsg->prevLogIndex, pMsg->prevLogTerm, pMsg->dataLen, pMsg->dataCount);
         syncNodeEventLog(ths, logBuf);
       } while (0);
 
@@ -999,7 +1000,7 @@ int32_t syncNodeOnAppendEntriesSnapshot2Cb(SSyncNode* ths, SyncAppendEntriesBatc
           code = syncNodePreCommit(ths, pAppendEntry);
           ASSERT(code == 0);
 
-          syncEntryDestory(pAppendEntry);
+          // syncEntryDestory(pAppendEntry);
         }
 
         // fsync once
diff --git a/source/libs/sync/src/syncAppendEntriesReply.c b/source/libs/sync/src/syncAppendEntriesReply.c
index e4724fc999dcedb565e309f5591818d03f6775b9..3f19b6759e9dcc4924681e5978065cbe602e019f 100644
--- a/source/libs/sync/src/syncAppendEntriesReply.c
+++ b/source/libs/sync/src/syncAppendEntriesReply.c
@@ -174,8 +174,12 @@ int32_t syncNodeOnAppendEntriesReplySnapshot2Cb(SSyncNode* ths, SyncAppendEntrie
     SyncIndex newNextIndex = pMsg->matchIndex + 1;
     SyncIndex newMatchIndex = pMsg->matchIndex;
 
-    if (ths->pLogStore->syncLogExist(ths->pLogStore, newNextIndex) &&
-        ths->pLogStore->syncLogExist(ths->pLogStore, newNextIndex - 1)) {
+    bool needStartSnapshot = false;
+    if (newMatchIndex >= SYNC_INDEX_BEGIN && !ths->pLogStore->syncLogExist(ths->pLogStore, newMatchIndex)) {
+      needStartSnapshot = true;
+    }
+
+    if (!needStartSnapshot) {
       // update next-index, match-index
       syncIndexMgrSetIndex(ths->pNextIndex, &(pMsg->srcId), newNextIndex);
       syncIndexMgrSetIndex(ths->pMatchIndex, &(pMsg->srcId), newMatchIndex);
@@ -197,15 +201,36 @@ int32_t syncNodeOnAppendEntriesReplySnapshot2Cb(SSyncNode* ths, SyncAppendEntrie
       syncIndexMgrSetIndex(ths->pMatchIndex, &(pMsg->srcId), newMatchIndex);
     }
 
+    // event log, update next-index
+    do {
+      char    host[64];
+      int16_t port;
+      syncUtilU642Addr(pMsg->srcId.addr, host, sizeof(host), &port);
+
+      char logBuf[256];
+      snprintf(logBuf, sizeof(logBuf), "reset next-index:%ld, match-index:%ld for %s:%d", newNextIndex, newMatchIndex,
+               host, port);
+      syncNodeEventLog(ths, logBuf);
+
+    } while (0);
+
   } else {
     SyncIndex nextIndex = syncIndexMgrGetIndex(ths->pNextIndex, &(pMsg->srcId));
 
     if (nextIndex > SYNC_INDEX_BEGIN) {
       --nextIndex;
 
-      if (ths->pLogStore->syncLogExist(ths->pLogStore, nextIndex) &&
-          ths->pLogStore->syncLogExist(ths->pLogStore, nextIndex - 1)) {
+      bool needStartSnapshot = false;
+      if (nextIndex >= SYNC_INDEX_BEGIN && !ths->pLogStore->syncLogExist(ths->pLogStore, nextIndex)) {
+        needStartSnapshot = true;
+      }
+      if (nextIndex - 1 >= SYNC_INDEX_BEGIN && !ths->pLogStore->syncLogExist(ths->pLogStore, nextIndex - 1)) {
+        needStartSnapshot = true;
+      }
+
+      if (!needStartSnapshot) {
         // do nothing
+
       } else {
         SSyncRaftEntry* pEntry;
         int32_t         code = ths->pLogStore->syncLogGetEntry(ths->pLogStore, nextIndex, &pEntry);
@@ -227,6 +252,21 @@ int32_t syncNodeOnAppendEntriesReplySnapshot2Cb(SSyncNode* ths, SyncAppendEntrie
       nextIndex = SYNC_INDEX_BEGIN;
     }
     syncIndexMgrSetIndex(ths->pNextIndex, &(pMsg->srcId), nextIndex);
+
+    // event log, update next-index
+    do {
+      char    host[64];
+      int16_t port;
+      syncUtilU642Addr(pMsg->srcId.addr, host, sizeof(host), &port);
+
+      SyncIndex newNextIndex = nextIndex;
+      SyncIndex newMatchIndex = syncIndexMgrGetIndex(ths->pMatchIndex, &(pMsg->srcId));
+      char      logBuf[256];
+      snprintf(logBuf, sizeof(logBuf), "reset2 next-index:%ld, match-index:%ld for %s:%d", newNextIndex, newMatchIndex,
+               host, port);
+      syncNodeEventLog(ths, logBuf);
+
+    } while (0);
   }
 
   return 0;
diff --git a/source/libs/sync/src/syncMain.c b/source/libs/sync/src/syncMain.c
index cc6057b031db0e92ed062e26b64973c63e6d5d58..595107882239c7c84a409ebb1343b0d8abd68b78 100644
--- a/source/libs/sync/src/syncMain.c
+++ b/source/libs/sync/src/syncMain.c
@@ -1526,12 +1526,14 @@ void syncNodeEventLog(const SSyncNode* pSyncNode, char* str) {
     if (pSyncNode != NULL && pSyncNode->pRaftCfg != NULL && pSyncNode->pRaftStore != NULL) {
       snprintf(logBuf, sizeof(logBuf),
                "vgId:%d, sync %s %s, term:%lu, commit:%ld, beginlog:%ld, lastlog:%ld, lastsnapshot:%ld, standby:%d, "
+               "strategy:%d, batch:%d, "
                "replica-num:%d, "
                "lconfig:%ld, changing:%d, restore:%d, %s",
                pSyncNode->vgId, syncUtilState2String(pSyncNode->state), str, pSyncNode->pRaftStore->currentTerm,
                pSyncNode->commitIndex, logBeginIndex, logLastIndex, snapshot.lastApplyIndex,
-               pSyncNode->pRaftCfg->isStandBy, pSyncNode->replicaNum, pSyncNode->pRaftCfg->lastConfigIndex,
-               pSyncNode->changing, pSyncNode->restoreFinish, printStr);
+               pSyncNode->pRaftCfg->isStandBy, pSyncNode->pRaftCfg->snapshotStrategy, pSyncNode->pRaftCfg->batchSize,
+               pSyncNode->replicaNum, pSyncNode->pRaftCfg->lastConfigIndex, pSyncNode->changing,
+               pSyncNode->restoreFinish, printStr);
     } else {
       snprintf(logBuf, sizeof(logBuf), "%s", str);
     }
@@ -1543,12 +1545,14 @@ void syncNodeEventLog(const SSyncNode* pSyncNode, char* str) {
     if (pSyncNode != NULL && pSyncNode->pRaftCfg != NULL && pSyncNode->pRaftStore != NULL) {
       snprintf(s, len,
                "vgId:%d, sync %s %s, term:%lu, commit:%ld, beginlog:%ld, lastlog:%ld, lastsnapshot:%ld, standby:%d, "
+               "strategy:%d, batch:%d, "
                "replica-num:%d, "
                "lconfig:%ld, changing:%d, restore:%d, %s",
                pSyncNode->vgId, syncUtilState2String(pSyncNode->state), str, pSyncNode->pRaftStore->currentTerm,
                pSyncNode->commitIndex, logBeginIndex, logLastIndex, snapshot.lastApplyIndex,
-               pSyncNode->pRaftCfg->isStandBy, pSyncNode->replicaNum, pSyncNode->pRaftCfg->lastConfigIndex,
-               pSyncNode->changing, pSyncNode->restoreFinish, printStr);
+               pSyncNode->pRaftCfg->isStandBy, pSyncNode->pRaftCfg->snapshotStrategy, pSyncNode->pRaftCfg->batchSize,
+               pSyncNode->replicaNum, pSyncNode->pRaftCfg->lastConfigIndex, pSyncNode->changing,
+               pSyncNode->restoreFinish, printStr);
     } else {
       snprintf(s, len, "%s", str);
     }
diff --git a/source/libs/sync/src/syncMessage.c b/source/libs/sync/src/syncMessage.c
index e53b9d5e367735baae6800a848929fdced87965c..697c25f3040d8cb09baefb5c45ef2691d6408973 100644
--- a/source/libs/sync/src/syncMessage.c
+++ b/source/libs/sync/src/syncMessage.c
@@ -1605,7 +1605,7 @@ void syncAppendEntriesLog2(char* s, const SyncAppendEntries* pMsg) {
 
 SyncAppendEntriesBatch* syncAppendEntriesBatchBuild(SSyncRaftEntry** entryPArr, int32_t arrSize, int32_t vgId) {
   ASSERT(entryPArr != NULL);
-  ASSERT(arrSize > 0);
+  ASSERT(arrSize >= 0);
 
   int32_t dataLen = 0;
   int32_t metaArrayLen = sizeof(SOffsetAndContLen) * arrSize;  // <offset, contLen>
diff --git a/source/libs/sync/src/syncRaftCfg.c b/source/libs/sync/src/syncRaftCfg.c
index ead1168632a154be285c07c4a7183a2a202451dd..6c381f6e7d9ad61a35bcffe4a9e7bf8141c90c06 100644
--- a/source/libs/sync/src/syncRaftCfg.c
+++ b/source/libs/sync/src/syncRaftCfg.c
@@ -101,7 +101,7 @@ cJSON *syncCfg2Json(SSyncCfg *pSyncCfg) {
 
 char *syncCfg2Str(SSyncCfg *pSyncCfg) {
   cJSON *pJson = syncCfg2Json(pSyncCfg);
-  char * serialized = cJSON_Print(pJson);
+  char  *serialized = cJSON_Print(pJson);
   cJSON_Delete(pJson);
   return serialized;
 }
@@ -109,7 +109,7 @@ char *syncCfg2Str(SSyncCfg *pSyncCfg) {
 char *syncCfg2SimpleStr(SSyncCfg *pSyncCfg) {
   if (pSyncCfg != NULL) {
     int32_t len = 512;
-    char *  s = taosMemoryMalloc(len);
+    char   *s = taosMemoryMalloc(len);
     memset(s, 0, len);
 
     snprintf(s, len, "{replica-num:%d, my-index:%d, ", pSyncCfg->replicaNum, pSyncCfg->myIndex);
@@ -206,7 +206,7 @@ cJSON *raftCfg2Json(SRaftCfg *pRaftCfg) {
 
 char *raftCfg2Str(SRaftCfg *pRaftCfg) {
   cJSON *pJson = raftCfg2Json(pRaftCfg);
-  char * serialized = cJSON_Print(pJson);
+  char  *serialized = cJSON_Print(pJson);
   cJSON_Delete(pJson);
   return serialized;
 }
@@ -285,7 +285,7 @@ int32_t raftCfgFromJson(const cJSON *pRoot, SRaftCfg *pRaftCfg) {
     (pRaftCfg->configIndexArr)[i] = atoll(pIndex->valuestring);
   }
 
-  cJSON * pJsonSyncCfg = cJSON_GetObjectItem(pJson, "SSyncCfg");
+  cJSON  *pJsonSyncCfg = cJSON_GetObjectItem(pJson, "SSyncCfg");
   int32_t code = syncCfgFromJson(pJsonSyncCfg, &(pRaftCfg->cfg));
   ASSERT(code == 0);
 
diff --git a/source/libs/sync/src/syncReplication.c b/source/libs/sync/src/syncReplication.c
index da31e9c4c46f3fac3625844b8af69e2a78e49cdd..17d9aeaea01a47d82087f1978a9dd8ba16addfad 100644
--- a/source/libs/sync/src/syncReplication.c
+++ b/source/libs/sync/src/syncReplication.c
@@ -148,9 +148,17 @@ int32_t syncNodeAppendEntriesPeersSnapshot2(SSyncNode* pSyncNode) {
     // get entry batch
     int32_t   getCount = 0;
     SyncIndex getEntryIndex = nextIndex;
-    for (int32_t i = 0; i < pSyncNode->batchSize; ++i) {
+    for (int32_t i = 0; i < pSyncNode->pRaftCfg->batchSize; ++i) {
       SSyncRaftEntry* pEntry = NULL;
       int32_t         code = pSyncNode->pLogStore->syncLogGetEntry(pSyncNode->pLogStore, getEntryIndex, &pEntry);
+
+      // event log
+      do {
+        char logBuf[128];
+        snprintf(logBuf, sizeof(logBuf), "get index:%d, code:%d, %s", getEntryIndex, code, tstrerror(terrno));
+        syncNodeEventLog(pSyncNode, logBuf);
+      } while (0);
+
       if (code == 0) {
         ASSERT(pEntry != NULL);
         entryPArr[i] = pEntry;
@@ -162,12 +170,19 @@ int32_t syncNodeAppendEntriesPeersSnapshot2(SSyncNode* pSyncNode) {
       }
     }
 
+    // event log
+    do {
+      char logBuf[128];
+      snprintf(logBuf, sizeof(logBuf), "build batch:%d", getCount);
+      syncNodeEventLog(pSyncNode, logBuf);
+    } while (0);
+
     // build msg
     SyncAppendEntriesBatch* pMsg = syncAppendEntriesBatchBuild(entryPArr, getCount, pSyncNode->vgId);
     ASSERT(pMsg != NULL);
 
     // free entries
-    for (int32_t i = 0; i < pSyncNode->batchSize; ++i) {
+    for (int32_t i = 0; i < pSyncNode->pRaftCfg->batchSize; ++i) {
       SSyncRaftEntry* pEntry = entryPArr[i];
       if (pEntry != NULL) {
         syncEntryDestory(pEntry);
diff --git a/source/libs/transport/src/transCli.c b/source/libs/transport/src/transCli.c
index 8b771f6f8affe92b8049fe92f0dab64cd26ad2a0..4b6ff43ba807ee620374c54a8f8b83bda49ee656 100644
--- a/source/libs/transport/src/transCli.c
+++ b/source/libs/transport/src/transCli.c
@@ -573,8 +573,8 @@ static void cliRecvCb(uv_stream_t* handle, ssize_t nread, const uv_buf_t* buf) {
     return;
   }
   if (nread < 0) {
-    tError("%s conn %p read error: %s, ref: %d", CONN_GET_INST_LABEL(conn), conn, uv_err_name(nread),
-           T_REF_VAL_GET(conn));
+    tWarn("%s conn %p read error: %s, ref: %d", CONN_GET_INST_LABEL(conn), conn, uv_err_name(nread),
+          T_REF_VAL_GET(conn));
     conn->broken = true;
     cliHandleExcept(conn);
   }
diff --git a/source/libs/transport/src/transSvr.c b/source/libs/transport/src/transSvr.c
index 3f4a5628f9f8afb52e25db7286e0891ee1fa962e..b805aa929cc8dabd1a86e0ab137002a98b0167e9 100644
--- a/source/libs/transport/src/transSvr.c
+++ b/source/libs/transport/src/transSvr.c
@@ -305,7 +305,7 @@ void uvOnRecvCb(uv_stream_t* cli, ssize_t nread, const uv_buf_t* buf) {
     return;
   }
 
-  tError("%s conn %p read error: %s", transLabel(pTransInst), conn, uv_err_name(nread));
+  tWarn("%s conn %p read error: %s", transLabel(pTransInst), conn, uv_err_name(nread));
   if (nread < 0) {
     conn->broken = true;
     if (conn->status == ConnAcquire) {
diff --git a/source/util/src/tpagedbuf.c b/source/util/src/tpagedbuf.c
index f50fd22ba6f577797eae6196582a4c164aa38358..0e608d0da22da836f0a357c7bd4f9b194c11fd13 100644
--- a/source/util/src/tpagedbuf.c
+++ b/source/util/src/tpagedbuf.c
@@ -518,8 +518,8 @@ void releaseBufPageInfo(SDiskbasedBuf* pBuf, SPageInfo* pi) {
 #ifdef BUF_PAGE_DEBUG
   uDebug("page_releaseBufPageInfo pageId:%d, used:%d, offset:%"PRId64, pi->pageId, pi->used, pi->offset);
 #endif
-  assert(pi->pData != NULL && pi->used == true);
-//  assert(pi->pData != NULL);
+  // assert(pi->pData != NULL && pi->used == true);
+  assert(pi->pData != NULL);
   pi->used = false;
   pBuf->statis.releasePages += 1;
 }
diff --git a/tests/script/jenkins/basic.txt b/tests/script/jenkins/basic.txt
index 4e009e702d35038904ef3f39097eed5141a4e8a6..0783aa0fd1d7007cd4389383b0cc9b74a6de0b42 100644
--- a/tests/script/jenkins/basic.txt
+++ b/tests/script/jenkins/basic.txt
@@ -163,8 +163,8 @@
 # --- sma
 ./test.sh -f tsim/sma/drop_sma.sim
 ./test.sh -f tsim/sma/tsmaCreateInsertQuery.sim
-#./test.sh -f tsim/sma/rsmaCreateInsertQuery.sim
-#./test.sh -f tsim/sma/rsmaPersistenceRecovery.sim
+./test.sh -f tsim/sma/rsmaCreateInsertQuery.sim
+./test.sh -f tsim/sma/rsmaPersistenceRecovery.sim
 
 # --- valgrind
 ./test.sh -f tsim/valgrind/checkError1.sim
diff --git a/tests/script/loop.sh b/tests/script/loop.sh
index b435eef12306fc994dd4878b8225946f179adf7e..b3bc9728de7b54ba779b1b443d9ec2d9ee7e72a1 100755
--- a/tests/script/loop.sh
+++ b/tests/script/loop.sh
@@ -13,7 +13,7 @@ CMD_NAME=
 LOOP_TIMES=5
 SLEEP_TIME=0
 
-while getopts "f:t:s:" arg
+while getopts "hf:t:s:" arg
 do
   case $arg in
     f)
@@ -25,6 +25,12 @@ do
     s)
       SLEEP_TIME=$OPTARG
       ;;
+    h)
+      echo "Usage: $(basename $0) -f [cmd name] "
+      echo "                  -t [loop times] "
+      echo "                  -s [sleep time] "
+      exit 0
+      ;;
     ?)
       echo "unknow argument"
       ;;
diff --git a/tests/script/tsim/sync/vnodesnapshot.sim b/tests/script/tsim/sync/vnodesnapshot.sim
index 7ad3afe309c40c3b986683623bb7bf65d247d687..da97f40f1a92ff18de90fc69c0d2cd6cf399dccd 100644
--- a/tests/script/tsim/sync/vnodesnapshot.sim
+++ b/tests/script/tsim/sync/vnodesnapshot.sim
@@ -145,9 +145,9 @@ system sh/exec.sh -n dnode4 -s stop -x SIGINT
 sql insert into ct1 values(now+0s, 10, 2.0, 3.0)
 sql insert into ct1 values(now+1s, 11, 2.1, 3.1)(now+2s, -12, -2.2, -3.2)(now+3s, -13, -2.3, -3.3)
 
-sql flush database db;
+#sql flush database db;
 
-system sh/exec.sh -n dnode4 -s start
+#system sh/exec.sh -n dnode4 -s start
 
 sql insert into ct1 values(now+1s, 81, 8.1, 8.1)(now+2s, -92, -9.2, -9.2)(now+3s, -73, -7.3, -7.3)
 
diff --git a/tests/script/tsim/user/basic.sim b/tests/script/tsim/user/basic.sim
index 85d5f8375ea6d1324d5d2a853e57a9210a0c3a26..298e0cf6e394fca8a529058fd1c4eb5c9451cca6 100644
--- a/tests/script/tsim/user/basic.sim
+++ b/tests/script/tsim/user/basic.sim
@@ -22,7 +22,7 @@ sql_error ALTER USER root SYSINFO 1
 sql_error ALTER USER root enable 0
 sql_error ALTER USER root enable 1
 
-sql_error create database db vgroups 1;
+#sql_error create database db vgroups 1;
 sql_error GRANT read ON db.* to root;
 sql_error GRANT read ON *.* to root;
 sql_error REVOKE read ON db.* from root;
diff --git a/tests/script/tsim/valgrind/basic1.sim b/tests/script/tsim/valgrind/basic1.sim
index 69aea5f0248442a300a6658dd6270ba12bcb967d..7d8991c095b1b80af49366c9332088de9c2e3b2d 100644
--- a/tests/script/tsim/valgrind/basic1.sim
+++ b/tests/script/tsim/valgrind/basic1.sim
@@ -1,6 +1,6 @@
 system sh/stop_dnodes.sh
 system sh/deploy.sh -n dnode1 -i 1
-#system sh/cfg.sh -n dnode1 -c debugflag -v 131
+system sh/cfg.sh -n dnode1 -c debugflag -v 131
 system sh/exec.sh -n dnode1 -s start -v
 sql connect
 
diff --git a/tests/script/tsim/valgrind/checkError1.sim b/tests/script/tsim/valgrind/checkError1.sim
index e3ac537b39c811cec00aedeeda3e8ef1f9282833..62653bbdd39cb66be72b2fd4797b0cb49b5aa967 100644
--- a/tests/script/tsim/valgrind/checkError1.sim
+++ b/tests/script/tsim/valgrind/checkError1.sim
@@ -5,20 +5,22 @@ system sh/exec.sh -n dnode1 -s start -v
 sql connect
 
 print =============== step1: show dnodes
-
 $x = 0
 step1:
 	$x = $x + 1
 	sleep 1000
 	if $x == 10 then
-	  print ----> dnode not ready!
+	  print ---> dnode not ready!
 		return -1
 	endi
 sql show dnodes
-print ----> $data00 $data01 $data02 $data03 $data04 $data05
+print ---> $data00 $data01 $data02 $data03 $data04 $data05
 if $rows != 1 then
   return -1
 endi
+if $data(1)[4] != ready then
+  goto step1
+endi
 
 print =============== step2: create alter drop show user
 sql create user u1 pass 'taosdata'
diff --git a/tests/script/tsim/valgrind/checkError2.sim b/tests/script/tsim/valgrind/checkError2.sim
index 0cb5ea3c25a1e1abef069b5d8d88bff74f230a64..f98cd0df1dc8c5e16a24c098e3a165dec6f7c503 100644
--- a/tests/script/tsim/valgrind/checkError2.sim
+++ b/tests/script/tsim/valgrind/checkError2.sim
@@ -10,14 +10,17 @@ step1:
 	$x = $x + 1
 	sleep 1000
 	if $x == 10 then
-	  print ----> dnode not ready!
+	  print ---> dnode not ready!
 		return -1
 	endi
 sql show dnodes
-print ----> $data00 $data01 $data02 $data03 $data04 $data05
+print ---> $data00 $data01 $data02 $data03 $data04 $data05
 if $rows != 1 then
   return -1
 endi
+if $data(1)[4] != ready then
+  goto step1
+endi
 
 print =============== step2: create db
 sql create database d1 vgroups 1 buffer 3
@@ -32,6 +35,21 @@ if $rows != 1 then
   return -1
 endi
 
+print =============== step3: create show table
+sql create table ct1 using stb tags(1000)
+#sql show tables
+#if $rows != 1 then 
+#  return -1
+#endi
+
+print =============== step5: insert data
+sql insert into ct1 values(now+0s, 10, 2.0, 3.0)
+sql insert into ct1 values(now+1s, 11, 2.1, 3.1)(now+2s, -12, -2.2, -3.2)(now+3s, -13, -2.3, -3.3)
+
+print =============== step6: select data
+#sql select * from ct1
+#sql select * from stb
+
 _OVER:
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
 
diff --git a/tests/script/tsim/valgrind/checkError3.sim b/tests/script/tsim/valgrind/checkError3.sim
new file mode 100644
index 0000000000000000000000000000000000000000..6bf82b4ef4f60edec46fa70a3e583f67592aad86
--- /dev/null
+++ b/tests/script/tsim/valgrind/checkError3.sim
@@ -0,0 +1,156 @@
+system sh/stop_dnodes.sh
+system sh/deploy.sh -n dnode1 -i 1
+system sh/deploy.sh -n dnode2 -i 2
+system sh/exec.sh -n dnode1 -s start -v
+system sh/exec.sh -n dnode2 -s start -v
+sql connect
+
+print =============== add dnode2 into cluster
+sql create dnode $hostname port 7200
+
+$x = 0
+step1:
+	$x = $x + 1
+	sleep 1000
+	if $x == 10 then
+	  print ---> dnode not ready!
+		return -1
+	endi
+sql show dnodes
+print ---> $data00 $data01 $data02 $data03 $data04 $data05
+print ---> $data10 $data11 $data12 $data13 $data14 $data15
+if $rows != 2 then
+  return -1
+endi
+if $data(1)[4] != ready then
+  goto step1
+endi
+if $data(2)[4] != ready then
+  goto step1
+endi
+
+print =============== create database, stable, table
+sql create database db vgroups 3
+sql use db
+sql create table stb (ts timestamp, c int) tags (t int)
+sql create table t0 using stb tags (0)
+sql create table tba (ts timestamp, c1 binary(10), c2 nchar(10));
+
+print =============== run show xxxx
+sql show dnodes
+if $rows != 2 then 
+  return -1
+endi
+
+sql show mnodes
+if $rows != 1 then 
+  return -1
+endi
+
+sql show databases
+if $rows != 3 then
+  return -1
+endi
+
+sql show stables
+if $rows != 1 then 
+  return -1
+endi
+
+sql show tables
+if $rows != 2 then 
+  return -1
+endi
+
+sql show users
+if $rows != 1 then 
+  return -1
+endi
+
+sql show vgroups
+if $rows != 3 then 
+  return -1
+endi
+
+print =============== run select * from information_schema.xxxx
+sql select * from information_schema.`dnodes`
+if $rows != 2 then 
+  return -1
+endi
+
+sql select * from information_schema.`mnodes`
+if $rows != 1 then 
+  return -1
+endi
+
+sql select * from information_schema.user_databases
+if $rows != 3 then
+  return -1
+endi
+
+sql select * from information_schema.user_stables
+if $rows != 1 then 
+  return -1
+endi
+
+sql select * from information_schema.user_tables
+if $rows != 31 then
+  return -1
+endi
+
+sql select * from information_schema.user_users
+if $rows != 1 then 
+  return -1
+endi
+
+sql select * from information_schema.`vgroups`
+if $rows != 3 then 
+  return -1
+endi
+
+sql show variables;
+if $rows != 4 then
+  return -1
+endi
+
+sql show dnode 1 variables;
+if $rows <= 0 then
+  return -1
+endi
+
+sql show local variables;
+if $rows <= 0 then
+  return -1
+endi
+
+print ==== stop dnode1 and dnode2, and restart dnodes
+system sh/exec.sh -n dnode1 -s stop -x SIGINT
+system sh/exec.sh -n dnode2 -s stop -x SIGINT
+
+print =============== check dnode1
+system_content sh/checkValgrind.sh -n dnode1 
+print cmd return result ----> [ $system_content ]
+if $system_content <= 0 then
+  return 0
+endi 
+
+$null=
+if $system_content == $null then
+  return 0
+endi 
+
+return -1
+
+print =============== check dnode2
+system_content sh/checkValgrind.sh -n dnode2 
+print cmd return result ----> [ $system_content ]
+if $system_content <= 0 then
+  return 0
+endi 
+
+$null=
+if $system_content == $null then
+  return 0
+endi 
+
+return -1
\ No newline at end of file
diff --git a/tests/system-test/2-query/json_tag.py b/tests/system-test/2-query/json_tag.py
index 79ce04d7d130bb67131413cd99f3d332e6a43d8d..f66f0f67ab03ce1c9c87ebc54dc2f879954c07bc 100644
--- a/tests/system-test/2-query/json_tag.py
+++ b/tests/system-test/2-query/json_tag.py
@@ -323,12 +323,12 @@ class TDTestCase:
         # where json value is bool
         tdSql.query("select * from jsons1 where jtag->'tag1'=true")
         tdSql.checkRows(0)
-        #tdSql.query("select * from jsons1 where jtag->'tag1'=false")
-        #tdSql.checkRows(1)
+        tdSql.query("select * from jsons1 where jtag->'tag1'=false")
+        tdSql.checkRows(1)
         tdSql.query("select * from jsons1 where jtag->'tag1'!=false")
         tdSql.checkRows(0)
-        #tdSql.query("select * from jsons1 where jtag->'tag1'>false")
-        #tdSql.checkRows(0)
+        tdSql.query("select * from jsons1 where jtag->'tag1'>false")
+        tdSql.checkRows(0)
 
         # where json value is null
         tdSql.query("select * from jsons1 where jtag->'tag1'=null")
diff --git a/tests/system-test/loop.sh b/tests/system-test/loop.sh
new file mode 100755
index 0000000000000000000000000000000000000000..b3bc9728de7b54ba779b1b443d9ec2d9ee7e72a1
--- /dev/null
+++ b/tests/system-test/loop.sh
@@ -0,0 +1,55 @@
+#!/bin/bash
+
+##################################################
+# 
+# Do simulation test 
+#
+##################################################
+
+set -e
+#set -x
+
+CMD_NAME=
+LOOP_TIMES=5
+SLEEP_TIME=0
+
+while getopts "hf:t:s:" arg
+do
+  case $arg in
+    f)
+      CMD_NAME=$OPTARG
+      ;;
+    t)
+      LOOP_TIMES=$OPTARG
+      ;;
+    s)
+      SLEEP_TIME=$OPTARG
+      ;;
+    h)
+      echo "Usage: $(basename $0) -f [cmd name] "
+      echo "                  -t [loop times] "
+      echo "                  -s [sleep time] "
+      exit 0
+      ;;
+    ?)
+      echo "unknow argument"
+      ;;
+  esac
+done
+
+echo LOOP_TIMES ${LOOP_TIMES}
+echo CMD_NAME ${CMD_NAME}
+echo SLEEP_TIME ${SLEEP_TIME}
+
+GREEN='\033[1;32m'
+GREEN_DARK='\033[0;32m'
+GREEN_UNDERLINE='\033[4;32m'
+NC='\033[0m'
+
+for ((i=0; i<$LOOP_TIMES; i++ ))
+do
+    echo -e $GREEN loop $i $NC
+    echo -e $GREEN cmd $CMD_NAME $NC
+    $CMD_NAME
+    sleep ${SLEEP_TIME}
+done