diff --git a/source/libs/stream/inc/streamBackendRocksdb.h b/source/libs/stream/inc/streamBackendRocksdb.h
index 39854d1824..b34b3420fe 100644
--- a/source/libs/stream/inc/streamBackendRocksdb.h
+++ b/source/libs/stream/inc/streamBackendRocksdb.h
@@ -65,11 +65,11 @@ int32_t streamStateCurNext_rocksdb(SStreamState* pState, SStreamStateCur* pCur);
 int32_t streamStateGetFirst_rocksdb(SStreamState* pState, SWinKey* key);
 int32_t streamStateGetGroupKVByCur_rocksdb(SStreamStateCur* pCur, SWinKey* pKey, const void** pVal, int32_t* pVLen);
 int32_t streamStateAddIfNotExist_rocksdb(SStreamState* pState, const SWinKey* key, void** pVal, int32_t* pVLen);
-int32_t streamStateCurPrev_rocksdb(SStreamState* pState, SStreamStateCur* pCur);
+int32_t streamStateCurPrev_rocksdb(SStreamStateCur* pCur);
 int32_t streamStateGetKVByCur_rocksdb(SStreamStateCur* pCur, SWinKey* pKey, const void** pVal, int32_t* pVLen);
 SStreamStateCur* streamStateGetAndCheckCur_rocksdb(SStreamState* pState, SWinKey* key);
 SStreamStateCur* streamStateSeekKeyNext_rocksdb(SStreamState* pState, const SWinKey* key);
-SStreamStateCur* streamStateSeekToLast_rocksdb(SStreamState* pState, const SWinKey* key);
+SStreamStateCur* streamStateSeekToLast_rocksdb(SStreamState* pState);
 SStreamStateCur* streamStateGetCur_rocksdb(SStreamState* pState, const SWinKey* key);
 
 // func cf
@@ -84,10 +84,14 @@ int32_t streamStateSessionDel_rocksdb(SStreamState* pState, const SSessionKey* k
 SStreamStateCur* streamStateSessionSeekKeyCurrentPrev_rocksdb(SStreamState* pState, const SSessionKey* key);
 SStreamStateCur* streamStateSessionSeekKeyCurrentNext_rocksdb(SStreamState* pState, SSessionKey* key);
 SStreamStateCur* streamStateSessionSeekKeyNext_rocksdb(SStreamState* pState, const SSessionKey* key);
+SStreamStateCur* streamStateSessionSeekToLast_rocksdb(SStreamState* pState);
+int32_t          streamStateSessionCurPrev_rocksdb(SStreamStateCur* pCur);
+
 int32_t streamStateSessionGetKVByCur_rocksdb(SStreamStateCur* pCur, SSessionKey* pKey, void** pVal, int32_t* pVLen);
 int32_t streamStateSessionGetKeyByRange_rocksdb(SStreamState* pState, const SSessionKey* key, SSessionKey* curKey);
 int32_t streamStateSessionAddIfNotExist_rocksdb(SStreamState* pState, SSessionKey* key, TSKEY gap, void** pVal,
                                                 int32_t* pVLen);
+
 int32_t streamStateSessionClear_rocksdb(SStreamState* pState);
 
 int32_t streamStateStateAddIfNotExist_rocksdb(SStreamState* pState, SSessionKey* key, char* pKeyData,
diff --git a/source/libs/stream/src/streamBackendRocksdb.c b/source/libs/stream/src/streamBackendRocksdb.c
index fb3551778a..6cef3cca75 100644
--- a/source/libs/stream/src/streamBackendRocksdb.c
+++ b/source/libs/stream/src/streamBackendRocksdb.c
@@ -1970,7 +1970,7 @@ int32_t streamStateAddIfNotExist_rocksdb(SStreamState* pState, const SWinKey* ke
   memset(*pVal, 0, size);
   return 0;
 }
-int32_t streamStateCurPrev_rocksdb(SStreamState* pState, SStreamStateCur* pCur) {
+int32_t streamStateCurPrev_rocksdb(SStreamStateCur* pCur) {
   qDebug("streamStateCurPrev_rocksdb");
   if (!pCur) return -1;
 
@@ -2052,7 +2052,7 @@ SStreamStateCur* streamStateSeekKeyNext_rocksdb(SStreamState* pState, const SWin
   return NULL;
 }
 
-SStreamStateCur* streamStateSeekToLast_rocksdb(SStreamState* pState, const SWinKey* key) {
+SStreamStateCur* streamStateSeekToLast_rocksdb(SStreamState* pState) {
   qDebug("streamStateGetCur_rocksdb");
   int32_t code = 0;
 
@@ -2062,9 +2062,6 @@ SStreamStateCur* streamStateSeekToLast_rocksdb(SStreamState* pState, const SWinK
     return NULL;
   }
 
-  char    buf[128] = {0};
-  int32_t klen = stateKeyEncode((void*)&maxStateKey, buf);
-
   {
     char tbuf[256] = {0};
     stateKeyToString((void*)&maxStateKey, tbuf);
@@ -2079,6 +2076,8 @@ SStreamStateCur* streamStateSeekToLast_rocksdb(SStreamState* pState, const SWinK
   pCur->iter = streamStateIterCreate(pState, "state", (rocksdb_snapshot_t**)&pCur->snapshot,
                                      (rocksdb_readoptions_t**)&pCur->readOpt);
 
+  char    buf[128] = {0};
+  int32_t klen = stateKeyEncode((void*)&maxStateKey, buf);
   rocksdb_iter_seek(pCur->iter, buf, (size_t)klen);
   rocksdb_iter_prev(pCur->iter);
   while (rocksdb_iter_valid(pCur->iter) && iterValueIsStale(pCur->iter)) {
@@ -2183,6 +2182,52 @@ int32_t streamStateSessionDel_rocksdb(SStreamState* pState, const SSessionKey* k
   STREAM_STATE_DEL_ROCKSDB(pState, "sess", &sKey);
   return code;
 }
+
+SStreamStateCur* streamStateSessionSeekToLast_rocksdb(SStreamState* pState) {
+  qDebug("streamStateSessionSeekToLast_rocksdb");
+
+  int32_t code = 0;
+
+  SSessionKey      maxSessionKey = {.groupId = UINT64_MAX, .win = {.skey = INT64_MAX, .ekey = INT64_MAX}};
+  SStateSessionKey maxKey = {.key = maxSessionKey, .opNum = INT64_MAX};
+
+  STREAM_STATE_PUT_ROCKSDB(pState, "sess", &maxKey, "", 0);
+  if (code != 0) {
+    return NULL;
+  }
+
+  SBackendCfWrapper* wrapper = pState->pTdbState->pBackendCfWrapper;
+  SStreamStateCur*   pCur = createStreamStateCursor();
+  pCur->number = pState->number;
+  pCur->db = wrapper->rocksdb;
+  pCur->iter = streamStateIterCreate(pState, "sess", (rocksdb_snapshot_t**)&pCur->snapshot,
+                                     (rocksdb_readoptions_t**)&pCur->readOpt);
+
+  char    buf[128] = {0};
+  int32_t klen = stateSessionKeyEncode((void*)&maxKey, buf);
+  rocksdb_iter_seek(pCur->iter, buf, (size_t)klen);
+  rocksdb_iter_prev(pCur->iter);
+  while (rocksdb_iter_valid(pCur->iter) && iterValueIsStale(pCur->iter)) {
+    rocksdb_iter_prev(pCur->iter);
+  }
+
+  if (!rocksdb_iter_valid(pCur->iter)) {
+    streamStateFreeCur(pCur);
+    pCur = NULL;
+  }
+
+  STREAM_STATE_DEL_ROCKSDB(pState, "sess", &maxKey);
+  return pCur;
+}
+
+int32_t streamStateSessionCurPrev_rocksdb(SStreamStateCur* pCur) {
+  qDebug("streamStateCurPrev_rocksdb");
+  if (!pCur) return -1;
+
+  rocksdb_iter_prev(pCur->iter);
+  return 0;
+}
+
 SStreamStateCur* streamStateSessionSeekKeyCurrentPrev_rocksdb(SStreamState* pState, const SSessionKey* key) {
   qDebug("streamStateSessionSeekKeyCurrentPrev_rocksdb");
 
@@ -2301,6 +2346,7 @@ SStreamStateCur* streamStateSessionSeekKeyNext_rocksdb(SStreamState* pState, con
   }
   return pCur;
 }
+
 int32_t streamStateSessionGetKVByCur_rocksdb(SStreamStateCur* pCur, SSessionKey* pKey, void** pVal, int32_t* pVLen) {
   qDebug("streamStateSessionGetKVByCur_rocksdb");
   if (!pCur) {
diff --git a/source/libs/stream/src/streamState.c b/source/libs/stream/src/streamState.c
index 7c5fcba10c..60b93a5590 100644
--- a/source/libs/stream/src/streamState.c
+++ b/source/libs/stream/src/streamState.c
@@ -670,7 +670,7 @@ int32_t streamStateCurNext(SStreamState* pState, SStreamStateCur* pCur) {
 
 int32_t streamStateCurPrev(SStreamState* pState, SStreamStateCur* pCur) {
 #ifdef USE_ROCKSDB
-  return streamStateCurPrev_rocksdb(pState, pCur);
+  return streamStateCurPrev_rocksdb(pCur);
 #else
   if (!pCur) {
     return -1;
@@ -714,7 +714,7 @@ void streamStateFreeVal(void* val) {
 
 int32_t streamStateSessionPut(SStreamState* pState, const SSessionKey* key, void* value, int32_t vLen) {
 #ifdef USE_ROCKSDB
-  int32_t code = TSDB_CODE_SUCCESS;
+  int32_t      code = TSDB_CODE_SUCCESS;
   SRowBuffPos* pos = (SRowBuffPos*)value;
   if (pos->needFree) {
     if (isFlushedState(pState->pFileState, key->win.ekey, 0)) {
@@ -725,7 +725,7 @@ int32_t streamStateSessionPut(SStreamState* pState, const SSessionKey* key, void
       streamStateReleaseBuf(pState, pos, true);
       putFreeBuff(pState->pFileState, pos);
       qDebug("===stream===save skey:%" PRId64 ", ekey:%" PRId64 ", groupId:%" PRIu64 ".code:%d", key->win.skey,
-            key->win.ekey, key->groupId, code);
+             key->win.ekey, key->groupId, code);
     } else {
       code = putSessionWinResultBuff(pState->pFileState, value);
     }
diff --git a/source/libs/stream/src/tstreamFileState.c b/source/libs/stream/src/tstreamFileState.c
index 8f4c13c12d..ac404893f0 100644
--- a/source/libs/stream/src/tstreamFileState.c
+++ b/source/libs/stream/src/tstreamFileState.c
@@ -58,7 +58,7 @@ struct SStreamFileState {
 
 typedef SRowBuffPos SRowBuffInfo;
 
-int32_t stateHashBuffRemoveFn(void* pBuff, const void *pKey, size_t keyLen) {
+int32_t stateHashBuffRemoveFn(void* pBuff, const void* pKey, size_t keyLen) {
   SRowBuffPos** pos = tSimpleHashGet(pBuff, pKey, keyLen);
   if (pos) {
     (*pos)->beFlushed = true;
@@ -67,7 +67,7 @@ int32_t stateHashBuffRemoveFn(void* pBuff, const void *pKey, size_t keyLen) {
 }
 
 int32_t stateHashBuffRemoveByPosFn(SStreamFileState* pFileState, SRowBuffPos* pPos) {
-  size_t keyLen = pFileState->keyLen;
+  size_t        keyLen = pFileState->keyLen;
   SRowBuffPos** ppPos = tSimpleHashGet(pFileState->rowStateBuff, pPos->pKey, keyLen);
   if (ppPos) {
     if ((*ppPos) == pPos) {
@@ -77,13 +77,9 @@ int32_t stateHashBuffRemoveByPosFn(SStreamFileState* pFileState, SRowBuffPos* pP
   return TSDB_CODE_SUCCESS;
 }
 
-void stateHashBuffClearFn(void* pBuff) {
-  tSimpleHashClear(pBuff);
-}
+void stateHashBuffClearFn(void* pBuff) { tSimpleHashClear(pBuff); }
 
-void stateHashBuffCleanupFn(void* pBuff) {
-  tSimpleHashCleanup(pBuff);
-}
+void stateHashBuffCleanupFn(void* pBuff) { tSimpleHashCleanup(pBuff); }
 
 int32_t intervalFileRemoveFn(SStreamFileState* pFileState, const void* pKey) {
   return streamStateDel_rocksdb(pFileState->pFileStore, pKey);
@@ -95,7 +91,7 @@ int32_t intervalFileGetFn(SStreamFileState* pFileState, void* pKey, void* data,
 
 void* intervalCreateStateKey(SRowBuffPos* pPos, int64_t num) {
   SStateKey* pStateKey = taosMemoryCalloc(1, sizeof(SStateKey));
-  SWinKey* pWinKey =  pPos->pKey;
+  SWinKey*   pWinKey = pPos->pKey;
   pStateKey->key = *pWinKey;
   pStateKey->opNum = num;
   return pStateKey;
@@ -111,15 +107,15 @@ int32_t sessionFileGetFn(SStreamFileState* pFileState, void* pKey, void* data, i
 
 void* sessionCreateStateKey(SRowBuffPos* pPos, int64_t num) {
   SStateSessionKey* pStateKey = taosMemoryCalloc(1, sizeof(SStateSessionKey));
-  SSessionKey* pWinKey =  pPos->pKey;
+  SSessionKey*      pWinKey = pPos->pKey;
   pStateKey->key = *pWinKey;
   pStateKey->opNum = num;
   return pStateKey;
 }
 
 SStreamFileState* streamFileStateInit(int64_t memSize, uint32_t keySize, uint32_t rowSize, uint32_t selectRowSize,
-                                      GetTsFun fp, void* pFile, TSKEY delMark, const char* taskId,
-                                      int64_t checkpointId, int8_t type) {
+                                      GetTsFun fp, void* pFile, TSKEY delMark, const char* taskId, int64_t checkpointId,
+                                      int8_t type) {
   if (memSize <= 0) {
     memSize = DEFAULT_MAX_STREAM_BUFFER_SIZE;
   }
@@ -178,7 +174,7 @@ SStreamFileState* streamFileStateInit(int64_t memSize, uint32_t keySize, uint32_
   pFileState->maxTs = INT64_MIN;
   pFileState->id = taosStrdup(taskId);
 
-  //todo(liuyao) optimize
+  // todo(liuyao) optimize
   if (type == STREAM_STATE_BUFF_HASH) {
     recoverSnapshot(pFileState, checkpointId);
   }
@@ -290,9 +286,7 @@ void streamFileStateClear(SStreamFileState* pFileState) {
 
 bool needClearDiskBuff(SStreamFileState* pFileState) { return pFileState->flushMark > 0; }
 
-void streamFileStateReleaseBuff(SStreamFileState* pFileState, SRowBuffPos* pPos, bool used) {
-  pPos->beUsed = used;
-}
+void streamFileStateReleaseBuff(SStreamFileState* pFileState, SRowBuffPos* pPos, bool used) { pPos->beUsed = used; }
 
 void popUsedBuffs(SStreamFileState* pFileState, SStreamSnapshot* pFlushList, uint64_t max, bool used) {
   uint64_t  i = 0;
@@ -357,8 +351,8 @@ int32_t clearRowBuff(SStreamFileState* pFileState) {
 }
 
 void* getFreeBuff(SStreamFileState* pFileState) {
-  SList* lists = pFileState->freeBuffs;
-  int32_t buffSize = pFileState->rowSize;
+  SList*     lists = pFileState->freeBuffs;
+  int32_t    buffSize = pFileState->rowSize;
   SListNode* pNode = tdListPopHead(lists);
   if (!pNode) {
     return NULL;
@@ -406,7 +400,7 @@ _end:
 }
 
 SRowBuffPos* getNewRowPosForWrite(SStreamFileState* pFileState) {
-  SRowBuffPos* newPos =  getNewRowPos(pFileState);
+  SRowBuffPos* newPos = getNewRowPos(pFileState);
   newPos->beUsed = true;
   newPos->beFlushed = false;
   newPos->needFree = false;
@@ -647,6 +641,26 @@ int32_t deleteExpiredCheckPoint(SStreamFileState* pFileState, TSKEY mark) {
   return code;
 }
 
+int32_t recoverSesssion(SStreamFileState* pFileState, int64_t ckId) {
+  int              code = TSDB_CODE_SUCCESS;
+  SStreamStateCur* pCur = streamStateSessionSeekToLast_rocksdb(pFileState->pFileStore);
+  if (pCur == NULL) {
+    return -1;
+  }
+  while (code == TSDB_CODE_SUCCESS) {
+    void*       pVal = NULL;
+    int32_t     vlen = 0;
+    SSessionKey key = {0};
+    code = streamStateSessionGetKVByCur_rocksdb(pCur, &key, &pVal, &vlen);
+    if (code != 0) {
+      break;
+    }
+    taosMemoryFree(pVal);
+    code = streamStateSessionCurPrev_rocksdb(pCur);
+  }
+  streamStateFreeCur(pCur);
+  return code;
+}
 int32_t recoverSnapshot(SStreamFileState* pFileState, int64_t ckId) {
   int32_t code = TSDB_CODE_SUCCESS;
   if (pFileState->maxTs != INT64_MIN) {
@@ -656,8 +670,7 @@ int32_t recoverSnapshot(SStreamFileState* pFileState, int64_t ckId) {
     deleteExpiredCheckPoint(pFileState, mark);
   }
 
-  SWinKey          key = {.groupId = 0, .ts = 0};
-  SStreamStateCur* pCur = streamStateSeekToLast_rocksdb(pFileState->pFileStore, &key);
+  SStreamStateCur* pCur = streamStateSeekToLast_rocksdb(pFileState->pFileStore);
   if (pCur == NULL) {
     return -1;
   }
@@ -667,9 +680,9 @@ int32_t recoverSnapshot(SStreamFileState* pFileState, int64_t ckId) {
       break;
     }
     void*        pVal = NULL;
-    int32_t      pVLen = 0;
+    int32_t      vlen = 0;
     SRowBuffPos* pNewPos = getNewRowPosForWrite(pFileState);
-    code = streamStateGetKVByCur_rocksdb(pCur, pNewPos->pKey, (const void**)&pVal, &pVLen);
+    code = streamStateGetKVByCur_rocksdb(pCur, pNewPos->pKey, (const void**)&pVal, &vlen);
     if (code != TSDB_CODE_SUCCESS || pFileState->getTs(pNewPos->pKey) < pFileState->flushMark) {
       destroyRowBuffPos(pNewPos);
       SListNode* pNode = tdListPopTail(pFileState->usedBuffs);
@@ -677,8 +690,8 @@ int32_t recoverSnapshot(SStreamFileState* pFileState, int64_t ckId) {
       taosMemoryFreeClear(pVal);
       break;
     }
-    ASSERT(pVLen == pFileState->rowSize);
-    memcpy(pNewPos->pRowBuff, pVal, pVLen);
+    ASSERT(vlen == pFileState->rowSize);
+    memcpy(pNewPos->pRowBuff, pVal, vlen);
     taosMemoryFreeClear(pVal);
     pNewPos->beFlushed = true;
     code = tSimpleHashPut(pFileState->rowStateBuff, pNewPos->pKey, pFileState->keyLen, &pNewPos, POINTER_BYTES);
@@ -686,7 +699,7 @@ int32_t recoverSnapshot(SStreamFileState* pFileState, int64_t ckId) {
       destroyRowBuffPos(pNewPos);
       break;
     }
-    code = streamStateCurPrev_rocksdb(pFileState->pFileStore, pCur);
+    code = streamStateCurPrev_rocksdb(pCur);
   }
   streamStateFreeCur(pCur);
 
@@ -700,22 +713,14 @@ void streamFileStateReloadInfo(SStreamFileState* pFileState, TSKEY ts) {
   pFileState->maxTs = TMAX(pFileState->maxTs, ts);
 }
 
-void* getRowStateBuff(SStreamFileState* pFileState) {
-  return pFileState->rowStateBuff;
-}
+void* getRowStateBuff(SStreamFileState* pFileState) { return pFileState->rowStateBuff; }
 
-void* getStateFileStore(SStreamFileState* pFileState) {
-  return pFileState->pFileStore;
-}
+void* getStateFileStore(SStreamFileState* pFileState) { return pFileState->pFileStore; }
 
 bool isDeteled(SStreamFileState* pFileState, TSKEY ts) {
   return pFileState->deleteMark > 0 && ts < (pFileState->maxTs - pFileState->deleteMark);
 }
 
-bool isFlushedState(SStreamFileState* pFileState, TSKEY ts, TSKEY gap) {
-  return ts <= (pFileState->flushMark + gap);
-}
+bool isFlushedState(SStreamFileState* pFileState, TSKEY ts, TSKEY gap) { return ts <= (pFileState->flushMark + gap); }
 
-int32_t getRowStateRowSize(SStreamFileState* pFileState) {
-  return pFileState->rowSize;
-}
+int32_t getRowStateRowSize(SStreamFileState* pFileState) { return pFileState->rowSize; }