diff --git a/source/dnode/vnode/inc/vnode.h b/source/dnode/vnode/inc/vnode.h
index b48a8775ce7924976ab3863d82c1907a404b8354..68d4216bae23c5cbf766ee887d6ade0c2e24e1a1 100644
--- a/source/dnode/vnode/inc/vnode.h
+++ b/source/dnode/vnode/inc/vnode.h
@@ -45,20 +45,20 @@ typedef struct SVnodeCfg SVnodeCfg;
 
 extern const SVnodeCfg vnodeCfgDefault;
 
-int     vnodeInit(int nthreads);
+int32_t vnodeInit(int32_t nthreads);
 void    vnodeCleanup();
-int     vnodeCreate(const char *path, SVnodeCfg *pCfg, STfs *pTfs);
+int32_t vnodeCreate(const char *path, SVnodeCfg *pCfg, STfs *pTfs);
 void    vnodeDestroy(const char *path, STfs *pTfs);
 SVnode *vnodeOpen(const char *path, STfs *pTfs, SMsgCb msgCb);
 void    vnodeClose(SVnode *pVnode);
-int     vnodePreprocessWriteReqs(SVnode *pVnode, SArray *pMsgs, int64_t *version);
-int     vnodeProcessWriteReq(SVnode *pVnode, SRpcMsg *pMsg, int64_t version, SRpcMsg *pRsp);
-int     vnodeProcessCMsg(SVnode *pVnode, SRpcMsg *pMsg, SRpcMsg **pRsp);
-int     vnodeProcessSyncReq(SVnode *pVnode, SRpcMsg *pMsg, SRpcMsg **pRsp);
-int     vnodeProcessQueryMsg(SVnode *pVnode, SRpcMsg *pMsg);
-int     vnodeProcessFetchMsg(SVnode *pVnode, SRpcMsg *pMsg, SQueueInfo *pInfo);
+int32_t vnodePreprocessWriteReqs(SVnode *pVnode, SArray *pMsgs, int64_t *version);
+int32_t vnodeProcessWriteReq(SVnode *pVnode, SRpcMsg *pMsg, int64_t version, SRpcMsg *pRsp);
+int32_t vnodeProcessCMsg(SVnode *pVnode, SRpcMsg *pMsg, SRpcMsg **pRsp);
+int32_t vnodeProcessSyncReq(SVnode *pVnode, SRpcMsg *pMsg, SRpcMsg **pRsp);
+int32_t vnodeProcessQueryMsg(SVnode *pVnode, SRpcMsg *pMsg);
+int32_t vnodeProcessFetchMsg(SVnode *pVnode, SRpcMsg *pMsg, SQueueInfo *pInfo);
 int32_t vnodeGetLoad(SVnode *pVnode, SVnodeLoad *pLoad);
-int     vnodeValidateTableHash(SVnode *pVnode, char *tableFName);
+int32_t vnodeValidateTableHash(SVnode *pVnode, char *tableFName);
 
 int32_t vnodeStart(SVnode *pVnode);
 void    vnodeStop(SVnode *pVnode);
@@ -74,8 +74,8 @@ typedef struct SMetaEntry  SMetaEntry;
 
 void        metaReaderInit(SMetaReader *pReader, SMeta *pMeta, int32_t flags);
 void        metaReaderClear(SMetaReader *pReader);
-int         metaGetTableEntryByUid(SMetaReader *pReader, tb_uid_t uid);
-int         metaReadNext(SMetaReader *pReader);
+int32_t     metaGetTableEntryByUid(SMetaReader *pReader, tb_uid_t uid);
+int32_t     metaReadNext(SMetaReader *pReader);
 const void *metaGetTableTagVal(SMetaEntry *pEntry, int16_t cid);
 
 #if 1  // refact APIs below (TODO)
@@ -86,7 +86,7 @@ typedef struct SMTbCursor SMTbCursor;
 
 SMTbCursor *metaOpenTbCursor(SMeta *pMeta);
 void        metaCloseTbCursor(SMTbCursor *pTbCur);
-int         metaTbCursorNext(SMTbCursor *pTbCur);
+int32_t     metaTbCursorNext(SMTbCursor *pTbCur);
 #endif
 
 // tsdb
@@ -124,8 +124,8 @@ typedef struct STqReadHandle STqReadHandle;
 STqReadHandle *tqInitSubmitMsgScanner(SMeta *pMeta);
 
 void    tqReadHandleSetColIdList(STqReadHandle *pReadHandle, SArray *pColIdList);
-int     tqReadHandleSetTbUidList(STqReadHandle *pHandle, const SArray *tbUidList);
-int     tqReadHandleAddTbUidList(STqReadHandle *pHandle, const SArray *tbUidList);
+int32_t tqReadHandleSetTbUidList(STqReadHandle *pHandle, const SArray *tbUidList);
+int32_t tqReadHandleAddTbUidList(STqReadHandle *pHandle, const SArray *tbUidList);
 int32_t tqReadHandleSetMsg(STqReadHandle *pHandle, SSubmitReq *pMsg, int64_t ver);
 bool    tqNextDataBlock(STqReadHandle *pHandle);
 bool    tqNextDataBlockFilterOut(STqReadHandle *pHandle, SHashObj *filterOutUids);
@@ -207,15 +207,15 @@ struct SMetaReader {
   SDecoder   coder;
   SMetaEntry me;
   void      *pBuf;
-  int        szBuf;
+  int32_t    szBuf;
 };
 
 struct SMTbCursor {
   TBC        *pDbc;
   void       *pKey;
   void       *pVal;
-  int         kLen;
-  int         vLen;
+  int32_t     kLen;
+  int32_t     vLen;
   SMetaReader mr;
 };
 
diff --git a/source/dnode/vnode/src/inc/vnd.h b/source/dnode/vnode/src/inc/vnd.h
index a034833a57a172d2aecc10d69a6e2e138a5422f0..eb3382ac4cd46a602a214b09b5a8debeaf15087f 100644
--- a/source/dnode/vnode/src/inc/vnd.h
+++ b/source/dnode/vnode/src/inc/vnd.h
@@ -24,7 +24,6 @@
 extern "C" {
 #endif
 
-// vnodeDebug ====================
 // clang-format off
 #define vFatal(...) do { if (vDebugFlag & DEBUG_FATAL) { taosPrintLog("VND FATAL ", DEBUG_FATAL, 255, __VA_ARGS__); }}     while(0)
 #define vError(...) do { if (vDebugFlag & DEBUG_ERROR) { taosPrintLog("VND ERROR ", DEBUG_ERROR, 255, __VA_ARGS__); }}     while(0)
@@ -34,17 +33,17 @@ extern "C" {
 #define vTrace(...) do { if (vDebugFlag & DEBUG_TRACE) { taosPrintLog("VND ", DEBUG_TRACE, vDebugFlag, __VA_ARGS__); }}    while(0)
 // clang-format on
 
-// vnodeCfg ====================
+// vnodeCfg.c
 extern const SVnodeCfg vnodeCfgDefault;
 
-int vnodeCheckCfg(const SVnodeCfg*);
-int vnodeEncodeConfig(const void* pObj, SJson* pJson);
-int vnodeDecodeConfig(const SJson* pJson, void* pObj);
+int32_t vnodeCheckCfg(const SVnodeCfg*);
+int32_t vnodeEncodeConfig(const void* pObj, SJson* pJson);
+int32_t vnodeDecodeConfig(const SJson* pJson, void* pObj);
 
-// vnodeModule ====================
-int vnodeScheduleTask(int (*execute)(void*), void* arg);
+// vnodeModule.c
+int32_t vnodeScheduleTask(int32_t (*execute)(void*), void* arg);
 
-// vnodeBufPool ====================
+// vnodeBufPool.c
 typedef struct SVBufPoolNode SVBufPoolNode;
 struct SVBufPoolNode {
   SVBufPoolNode*  prev;
@@ -62,37 +61,29 @@ struct SVBufPool {
   SVBufPoolNode  node;
 };
 
-int  vnodeOpenBufPool(SVnode* pVnode, int64_t size);
-int  vnodeCloseBufPool(SVnode* pVnode);
-void vnodeBufPoolReset(SVBufPool* pPool);
+int32_t vnodeOpenBufPool(SVnode* pVnode, int64_t size);
+int32_t vnodeCloseBufPool(SVnode* pVnode);
+void    vnodeBufPoolReset(SVBufPool* pPool);
 
-// vnodeQuery ====================
-int  vnodeQueryOpen(SVnode* pVnode);
-void vnodeQueryClose(SVnode* pVnode);
-int  vnodeGetTableMeta(SVnode* pVnode, SRpcMsg* pMsg);
+// vnodeQuery.c
+int32_t vnodeQueryOpen(SVnode* pVnode);
+void    vnodeQueryClose(SVnode* pVnode);
+int32_t vnodeGetTableMeta(SVnode* pVnode, SRpcMsg* pMsg);
 
-// vnodeCommit ====================
-int vnodeBegin(SVnode* pVnode);
-int vnodeShouldCommit(SVnode* pVnode);
-int vnodeCommit(SVnode* pVnode);
-int vnodeSaveInfo(const char* dir, const SVnodeInfo* pCfg);
-int vnodeCommitInfo(const char* dir, const SVnodeInfo* pInfo);
-int vnodeLoadInfo(const char* dir, SVnodeInfo* pInfo);
-int vnodeSyncCommit(SVnode* pVnode);
-int vnodeAsyncCommit(SVnode* pVnode);
+// vnodeCommit.c
+int32_t vnodeBegin(SVnode* pVnode);
+int32_t vnodeShouldCommit(SVnode* pVnode);
+int32_t vnodeCommit(SVnode* pVnode);
+int32_t vnodeSaveInfo(const char* dir, const SVnodeInfo* pCfg);
+int32_t vnodeCommitInfo(const char* dir, const SVnodeInfo* pInfo);
+int32_t vnodeLoadInfo(const char* dir, SVnodeInfo* pInfo);
+int32_t vnodeSyncCommit(SVnode* pVnode);
+int32_t vnodeAsyncCommit(SVnode* pVnode);
 
-// vnodeCommit ====================
+// vnodeSync.c
 int32_t   vnodeSyncOpen(SVnode* pVnode, char* path);
-int32_t   vnodeSyncStart(SVnode* pVnode);
+void      vnodeSyncStart(SVnode* pVnode);
 void      vnodeSyncClose(SVnode* pVnode);
-void      vnodeSyncSetMsgCb(SVnode* pVnode);
-int32_t   vnodeSyncEqMsg(const SMsgCb* msgcb, SRpcMsg* pMsg);
-int32_t   vnodeSyncSendMsg(const SEpSet* pEpSet, SRpcMsg* pMsg);
-void      vnodeSyncCommitCb(struct SSyncFSM* pFsm, const SRpcMsg* pMsg, SFsmCbMeta cbMeta);
-void      vnodeSyncPreCommitCb(struct SSyncFSM* pFsm, const SRpcMsg* pMsg, SFsmCbMeta cbMeta);
-void      vnodeSyncRollBackCb(struct SSyncFSM* pFsm, const SRpcMsg* pMsg, SFsmCbMeta cbMeta);
-int32_t   vnodeSyncGetSnapshotCb(struct SSyncFSM* pFsm, SSnapshot* pSnapshot);
-SSyncFSM* syncVnodeMakeFsm();
 
 #ifdef __cplusplus
 }
diff --git a/source/libs/sync/src/syncMain.c b/source/libs/sync/src/syncMain.c
index 56389de88a4137fe460e5e4c4e484d3f6ce7c304..d9ff60bbe22b573db34331e5aabbd04b06ff5616 100644
--- a/source/libs/sync/src/syncMain.c
+++ b/source/libs/sync/src/syncMain.c
@@ -674,10 +674,10 @@ int32_t syncNodeSendMsgById(const SRaftId* destRaftId, SSyncNode* pSyncNode, SRp
   SEpSet epSet;
   syncUtilraftId2EpSet(destRaftId, &epSet);
   if (pSyncNode->FpSendMsg != NULL) {
-    pMsg->info.noResp = 1;
     // htonl
     syncUtilMsgHtoN(pMsg->pCont);
 
+    pMsg->info.noResp = 1;
     pSyncNode->FpSendMsg(&epSet, pMsg);
   } else {
     sTrace("syncNodeSendMsgById pSyncNode->FpSendMsg is NULL");
@@ -689,10 +689,10 @@ int32_t syncNodeSendMsgByInfo(const SNodeInfo* nodeInfo, SSyncNode* pSyncNode, S
   SEpSet epSet;
   syncUtilnodeInfo2EpSet(nodeInfo, &epSet);
   if (pSyncNode->FpSendMsg != NULL) {
-    pMsg->info.noResp = 1;
     // htonl
     syncUtilMsgHtoN(pMsg->pCont);
 
+    pMsg->info.noResp = 1;
     pSyncNode->FpSendMsg(&epSet, pMsg);
   } else {
     sTrace("syncNodeSendMsgByInfo pSyncNode->FpSendMsg is NULL");
diff --git a/source/libs/sync/test/syncIOSendMsgTest.cpp b/source/libs/sync/test/syncIOSendMsgTest.cpp
index b8a9bec1087b41e60f94b11ea2ec1b0a651a98b9..630d96054bef043134b76233683551abe682bd6c 100644
--- a/source/libs/sync/test/syncIOSendMsgTest.cpp
+++ b/source/libs/sync/test/syncIOSendMsgTest.cpp
@@ -97,11 +97,12 @@ int main(int argc, char** argv) {
   for (int i = 0; i < 10; ++i) {
     SyncPingReply* pSyncMsg =
         syncPingReplyBuild2(&pSyncNode->myRaftId, &pSyncNode->myRaftId, 1000, "syncIOSendMsgTest");
-    SRpcMsg rpcMsg;
+    SRpcMsg rpcMsg = {0};
     syncPingReply2RpcMsg(pSyncMsg, &rpcMsg);
 
     SEpSet epSet;
     syncUtilnodeInfo2EpSet(&pSyncNode->myNodeInfo, &epSet);
+    rpcMsg.info.noResp = 1;
     pSyncNode->FpSendMsg(&epSet, &rpcMsg);
 
     taosMsleep(1000);