diff --git a/source/dnode/vnode/CMakeLists.txt b/source/dnode/vnode/CMakeLists.txt
index e8660cd6ad..04fad2d78e 100644
--- a/source/dnode/vnode/CMakeLists.txt
+++ b/source/dnode/vnode/CMakeLists.txt
@@ -15,6 +15,7 @@ target_sources(
     "src/vnd/vnodeSync.c"
     "src/vnd/vnodeSnapshot.c"
     "src/vnd/vnodeRetention.c"
+    "src/vnd/vnodeInitApi.c"
 
     # meta
     "src/meta/metaOpen.c"
diff --git a/source/dnode/vnode/src/vnd/vnodeOpen.c b/source/dnode/vnode/src/vnd/vnodeOpen.c
index ebfecc4c15..b5e7c6875b 100644
--- a/source/dnode/vnode/src/vnd/vnodeOpen.c
+++ b/source/dnode/vnode/src/vnd/vnodeOpen.c
@@ -14,7 +14,6 @@
  */
 
 #include "vnd.h"
-#include "tstreamUpdate.h"
 
 int32_t vnodeCreate(const char *path, SVnodeCfg *pCfg, STfs *pTfs) {
   SVnodeInfo info = {0};
@@ -445,177 +444,3 @@ void vnodeGetSnapshot(SVnode *pVnode, SSnapshot *pSnapshot) {
   pSnapshot->lastApplyTerm = pVnode->state.commitTerm;
   pSnapshot->lastConfigIndex = -1;
 }
-
-static void initTsdbReaderAPI(TsdReader* pReader);
-static void initMetadataAPI(SStoreMeta* pMeta);
-static void initTqAPI(SStoreTqReader* pTq);
-static void initStateStoreAPI(SStateStore* pStore);
-static void initMetaReaderAPI(SStoreMetaReader* pMetaReader);
-
-void initStorageAPI(SStorageAPI* pAPI) {
-  initTsdbReaderAPI(&pAPI->tsdReader);
-  initMetadataAPI(&pAPI->metaFn);
-  initTqAPI(&pAPI->tqReaderFn);
-  initStateStoreAPI(&pAPI->stateStore);
-  initMetaReaderAPI(&pAPI->metaReaderFn);
-}
-
-void initTsdbReaderAPI(TsdReader* pReader) {
-  pReader->tsdReaderOpen = (__store_reader_open_fn_t)tsdbReaderOpen;
-  pReader->tsdReaderClose = tsdbReaderClose;
-
-  pReader->tsdNextDataBlock = tsdbNextDataBlock;
-
-  pReader->tsdReaderRetrieveDataBlock = tsdbRetrieveDataBlock;
-  pReader->tsdReaderReleaseDataBlock = tsdbReleaseDataBlock;
-
-  pReader->tsdReaderRetrieveBlockSMAInfo = tsdbRetrieveDatablockSMA;
-
-  pReader->tsdReaderNotifyClosing = tsdbReaderSetCloseFlag;
-  pReader->tsdReaderResetStatus = tsdbReaderReset;
-
-  pReader->tsdReaderGetDataBlockDistInfo = tsdbGetFileBlocksDistInfo;
-  pReader->tsdReaderGetNumOfInMemRows = tsdbGetNumOfRowsInMemTable;    // todo this function should be moved away
-
-  pReader->tsdSetQueryTableList = tsdbSetTableList;
-  pReader->tsdSetReaderTaskId = (void (*)(void *, const char *))tsdbReaderSetId;
-}
-
-void initMetadataAPI(SStoreMeta* pMeta) {
-  pMeta->isTableExisted = metaIsTableExist;
-
-  pMeta->openTableMetaCursor = metaOpenTbCursor;
-  pMeta->closeTableMetaCursor = metaCloseTbCursor;
-  pMeta->cursorNext = metaTbCursorNext;
-  pMeta->cursorPrev = metaTbCursorPrev;
-
-  pMeta->getBasicInfo = vnodeGetInfo;
-  pMeta->getNumOfChildTables = metaGetStbStats;
-
-  pMeta->getChildTableList = vnodeGetCtbIdList;
-
-  pMeta->storeGetIndexInfo = vnodeGetIdx;
-  pMeta->getInvertIndex = vnodeGetIvtIdx;
-
-  pMeta->extractTagVal = (const void *(*)(const void *, int16_t, STagVal *))metaGetTableTagVal;
-
-}
-
-void initTqAPI(SStoreTqReader* pTq) {
-  pTq->tqReaderOpen = tqReaderOpen;
-  pTq->tqReaderSetColIdList = tqReaderSetColIdList;
-
-  pTq->tqReaderClose = tqReaderClose;
-  pTq->tqReaderSeek = tqReaderSeek;
-  pTq->tqRetrieveBlock = tqRetrieveDataBlock;
-
-  pTq->tqReaderNextBlockInWal = tqNextBlockInWal;
-
-  pTq->tqNextBlockImpl = tqNextBlockImpl;// todo remove it
-
-  pTq->tqReaderAddTables = tqReaderAddTbUidList;
-  pTq->tqReaderSetQueryTableList = tqReaderSetTbUidList;
-
-  pTq->tqReaderRemoveTables = tqReaderRemoveTbUidList;
-
-  pTq->tqReaderIsQueriedTable = tqReaderIsQueriedTable;
-  pTq->tqReaderCurrentBlockConsumed = tqCurrentBlockConsumed;
-
-  pTq->tqReaderGetWalReader = tqGetWalReader;  // todo remove it
-  pTq->tqReaderRetrieveTaosXBlock = tqRetrieveTaosxBlock;          // todo remove it
-
-  pTq->tqReaderSetSubmitMsg = tqReaderSetSubmitMsg; // todo remove it
-  pTq->tqReaderNextBlockFilterOut = tqNextDataBlockFilterOut;
-}
-
-void initStateStoreAPI(SStateStore* pStore) {
-  pStore->streamFileStateInit = streamFileStateInit;
-  pStore->updateInfoDestoryColseWinSBF = updateInfoDestoryColseWinSBF;
-
-  pStore->streamStateGetByPos = streamStateGetByPos;
-
-  pStore->streamStatePutParName = streamStatePutParName;
-  pStore->streamStateGetParName = streamStateGetParName;
-
-  pStore->streamStateAddIfNotExist = streamStateAddIfNotExist;
-  pStore->streamStateReleaseBuf = streamStateReleaseBuf;
-  pStore->streamStateFreeVal = streamStateFreeVal;
-
-  pStore->streamStatePut = streamStatePut;
-  pStore->streamStateGet = streamStateGet;
-  pStore->streamStateCheck = streamStateCheck;
-  pStore->streamStateGetByPos = streamStateGetByPos;
-  pStore->streamStateDel = streamStateDel;
-  pStore->streamStateClear = streamStateClear;
-  pStore->streamStateSaveInfo = streamStateSaveInfo;
-  pStore->streamStateGetInfo = streamStateGetInfo;
-  pStore->streamStateSetNumber = streamStateSetNumber;
-
-  pStore->streamStateFillPut = streamStateFillPut;
-  pStore->streamStateFillGet = streamStateFillGet;
-  pStore->streamStateFillDel = streamStateFillDel;
-
-  pStore->streamStateCurNext = streamStateCurNext;
-  pStore->streamStateCurPrev = streamStateCurPrev;
-
-  pStore->streamStateGetAndCheckCur = streamStateGetAndCheckCur;
-  pStore->streamStateSeekKeyNext = streamStateSeekKeyNext;
-  pStore->streamStateFillSeekKeyNext = streamStateFillSeekKeyNext;
-  pStore->streamStateFillSeekKeyPrev = streamStateFillSeekKeyPrev;
-  pStore->streamStateFreeCur = streamStateFreeCur;
-
-  pStore->streamStateGetGroupKVByCur = streamStateGetGroupKVByCur;
-  pStore->streamStateGetKVByCur = streamStateGetKVByCur;
-
-  pStore->streamStateSessionAddIfNotExist = streamStateSessionAddIfNotExist;
-  pStore->streamStateSessionPut = streamStateSessionPut;
-  pStore->streamStateSessionGet = streamStateSessionGet;
-  pStore->streamStateSessionDel = streamStateSessionDel;
-  pStore->streamStateSessionClear = streamStateSessionClear;
-  pStore->streamStateSessionGetKVByCur = streamStateSessionGetKVByCur;
-  pStore->streamStateStateAddIfNotExist = streamStateStateAddIfNotExist;
-  pStore->streamStateSessionGetKeyByRange = streamStateSessionGetKeyByRange;
-
-  pStore->updateInfoInit = updateInfoInit;
-  pStore->updateInfoFillBlockData = updateInfoFillBlockData;
-  pStore->updateInfoIsUpdated = updateInfoIsUpdated;
-  pStore->updateInfoIsTableInserted = updateInfoIsTableInserted;
-  pStore->updateInfoDestroy = updateInfoDestroy;
-
-  pStore->updateInfoInitP = updateInfoInitP;
-  pStore->updateInfoAddCloseWindowSBF = updateInfoAddCloseWindowSBF;
-  pStore->updateInfoDestoryColseWinSBF = updateInfoDestoryColseWinSBF;
-  pStore->updateInfoSerialize = updateInfoSerialize;
-  pStore->updateInfoDeserialize = updateInfoDeserialize;
-
-  pStore->streamStateSessionSeekKeyNext = streamStateSessionSeekKeyNext;
-  pStore->streamStateSessionSeekKeyCurrentPrev = streamStateSessionSeekKeyCurrentPrev;
-  pStore->streamStateSessionSeekKeyCurrentNext = streamStateSessionSeekKeyCurrentNext;
-
-  pStore->streamFileStateInit = streamFileStateInit;
-
-  pStore->streamFileStateDestroy = streamFileStateDestroy;
-  pStore->streamFileStateClear = streamFileStateClear;
-  pStore->needClearDiskBuff = needClearDiskBuff;
-
-  pStore->streamStateOpen = streamStateOpen;
-  pStore->streamStateClose = streamStateClose;
-  pStore->streamStateBegin = streamStateBegin;
-  pStore->streamStateCommit = streamStateCommit;
-  pStore->streamStateDestroy= streamStateDestroy;
-  pStore->streamStateDeleteCheckPoint = streamStateDeleteCheckPoint;
-}
-
-void initMetaReaderAPI(SStoreMetaReader* pMetaReader) {
-  pMetaReader->initReader = _metaReaderInit;
-  pMetaReader->clearReader = metaReaderClear;
-
-  pMetaReader->getTableEntryByUid = metaReaderGetTableEntryByUid;
-  pMetaReader->clearReader = metaReaderClear;
-
-  pMetaReader->getEntryGetUidCache = metaReaderGetTableEntryByUidCache;
-  pMetaReader->getTableEntryByName = metaGetTableEntryByName;
-
-  pMetaReader->readerReleaseLock = metaReaderReleaseLock;
-}
-