diff --git a/source/libs/stream/inc/streamBackendRocksdb.h b/source/libs/stream/inc/streamBackendRocksdb.h
index a33a0a577b7e06fc39bc979498ce7a6b6e943360..01934ecf77e22eb6e66799710ad089e9763db53f 100644
--- a/source/libs/stream/inc/streamBackendRocksdb.h
+++ b/source/libs/stream/inc/streamBackendRocksdb.h
@@ -89,5 +89,13 @@ int32_t streamStatePutBatch_rocksdb(SStreamState* pState, void* pBatch);
 int32_t streamDefaultPut_rocksdb(SStreamState* pState, const void* key, void* pVal, int32_t pVLen);
 int32_t streamDefaultGet_rocksdb(SStreamState* pState, const void* key, void** pVal, int32_t* pVLen);
 int32_t streamDefaultDel_rocksdb(SStreamState* pState, const void* key);
-int32_t streamDefaultIter_rocksdb(SStreamState* pState, const void* start, const void* end, SArray* result);
+
+void*   streamDefaultIterCreate_rocksdb(SStreamState* pState);
+int32_t streamDefaultIterValid_rocksdb(void* iter);
+void*   streamDefaultIterSeek_rocksdb(void* iter, const char* key);
+int32_t streamDefaultIter_rocksdb(void* iter);
+char**  streamDefaultIterKey_rocksdb(void* iter);
+char*   streamDefaultIterVal_rocksdb(void* iter);
+
+// int32_t streamDefaultIter_rocksdb(SStreamState* pState, const void* start, const void* end, SArray* result);
 #endif
\ No newline at end of file
diff --git a/source/libs/stream/src/streamStateRocksdb.c b/source/libs/stream/src/streamStateRocksdb.c
index 9977732a9aae0fe3d16c38ba6fdb2ee164888279..0fa7b78ce2da1d3ac45817f02c89b571dfcd695b 100644
--- a/source/libs/stream/src/streamStateRocksdb.c
+++ b/source/libs/stream/src/streamStateRocksdb.c
@@ -646,37 +646,86 @@ int32_t streamDefaultDel_rocksdb(SStreamState* pState, const void* key) {
   return code;
 }
 
+void*   streamDefaultIterCreate_rocksdb(SStreamState* pState) {}
+int32_t streamDefaultIterValid_rocksdb(void* iter);
+void*   streamDefaultIterSeek_rocksdb(void* iter, const char* key);
+int32_t streamDefaultIter_rocksdb(void* iter);
+char**  streamDefaultIterKey_rocksdb(void* iter);
+char*   streamDefaultIterVal_rocksdb(void* iter);
+// typedef struct {
+//   char* start;
+//   char* end;
+//   void* result;
+// } StreamFilterArg;
+
+// typedef int (*streamfilterFunc)(StreamFilterArg* arg);
+
+// int32_t streamDefaultIterFilter_rocksdb(SStreamState* pState, streamfilterFunc filterFunc, StreamFilterArg* arg) {
+//   int   code = 0;
+//   char* err = NULL;
+
+//   rocksdb_snapshot_t*    snapshot = NULL;
+//   rocksdb_readoptions_t* readopts = NULL;
+//   rocksdb_iterator_t*    pIter = streamStateIterCreate(pState, "default", &snapshot, &readopts);
+//   if (pIter == NULL) {
+//     return -1;
+//   }
+//   char*   start = arg->start;
+//   char*   end = arg->end;
+//   SArray* result = arg->result;
+
+//   rocksdb_iter_seek(pIter, start, strlen(start));
+//   while (rocksdb_iter_valid(pIter)) {
+//     const char* key = rocksdb_iter_key(pIter, NULL);
+//     if (end != NULL && strcmp(key, end) > 0) {
+//       break;
+//     }
+//     if (strncmp(key, start, strlen(start)) == 0 && strlen(key) >= strlen(start) + 1) {
+//       int64_t checkPoint = 0;
+//       // if (sscanf(key + strlen(key), ":%" PRId64 "", &checkPoint) == 1) {
+//       //   taosArrayPush(result, &checkPoint);
+//       // }
+//     } else {
+//       break;
+//     }
+//     rocksdb_iter_next(pIter);
+//   }
+//   rocksdb_release_snapshot(pState->pTdbState->rocksdb, snapshot);
+//   rocksdb_readoptions_destroy(readopts);
+//   rocksdb_iter_destroy(pIter);
+//   return code;
+// }
 int32_t streamDefaultIter_rocksdb(SStreamState* pState, const void* start, const void* end, SArray* result) {
-  int   code = 0;
-  char* err = NULL;
+  // int   code = 0;
+  // char* err = NULL;
 
-  rocksdb_snapshot_t*    snapshot = NULL;
-  rocksdb_readoptions_t* readopts = NULL;
-  rocksdb_iterator_t*    pIter = streamStateIterCreate(pState, "default", &snapshot, &readopts);
-  if (pIter == NULL) {
-    return -1;
-  }
+  // rocksdb_snapshot_t*    snapshot = NULL;
+  // rocksdb_readoptions_t* readopts = NULL;
+  // rocksdb_iterator_t*    pIter = streamStateIterCreate(pState, "default", &snapshot, &readopts);
+  // if (pIter == NULL) {
+  //   return -1;
+  // }
 
-  rocksdb_iter_seek(pIter, start, strlen(start));
-  while (rocksdb_iter_valid(pIter)) {
-    const char* key = rocksdb_iter_key(pIter, NULL);
-    if (end != NULL && strcmp(key, end) > 0) {
-      break;
-    }
-    if (strncmp(key, start, strlen(start)) == 0 && strlen(key) >= strlen(start) + 1) {
-      int64_t checkPoint = 0;
-      if (sscanf(key + strlen(key), ":%" PRId64 "", &checkPoint) == 1) {
-        taosArrayPush(result, &checkPoint);
-      }
-    } else {
-      break;
-    }
-    rocksdb_iter_next(pIter);
-  }
-  rocksdb_release_snapshot(pState->pTdbState->rocksdb, snapshot);
-  rocksdb_readoptions_destroy(readopts);
-  rocksdb_iter_destroy(pIter);
-  return code;
+  // rocksdb_iter_seek(pIter, start, strlen(start));
+  // while (rocksdb_iter_valid(pIter)) {
+  //   const char* key = rocksdb_iter_key(pIter, NULL);
+  //   if (end != NULL && strcmp(key, end) > 0) {
+  //     break;
+  //   }
+  //   if (strncmp(key, start, strlen(start)) == 0 && strlen(key) >= strlen(start) + 1) {
+  //     int64_t checkPoint = 0;
+  //     if (sscanf(key + strlen(key), ":%" PRId64 "", &checkPoint) == 1) {
+  //       taosArrayPush(result, &checkPoint);
+  //     }
+  //   } else {
+  //     break;
+  //   }
+  //   rocksdb_iter_next(pIter);
+  // }
+  // rocksdb_release_snapshot(pState->pTdbState->rocksdb, snapshot);
+  // rocksdb_readoptions_destroy(readopts);
+  // rocksdb_iter_destroy(pIter);
+  // return code;
 }
 
 int32_t streamStateGet_rocksdb(SStreamState* pState, const SWinKey* key, void** pVal, int32_t* pVLen) {