diff --git a/include/libs/sync/sync.h b/include/libs/sync/sync.h
index 831063c606..9b6593e4b5 100644
--- a/include/libs/sync/sync.h
+++ b/include/libs/sync/sync.h
@@ -20,17 +20,23 @@
 extern "C" {
 #endif
 
-#include "os.h"
-
 #include "cJSON.h"
 #include "tdef.h"
 #include "tmsgcb.h"
 
+#define SYNC_INDEX_BEGIN 0
+#define SYNC_INDEX_INVALID -1
+
 typedef uint64_t SyncNodeId;
 typedef int32_t  SyncGroupId;
 typedef int64_t  SyncIndex;
 typedef uint64_t SyncTerm;
 
+typedef struct SSyncNode      SSyncNode;
+typedef struct SSyncBuffer    SSyncBuffer;
+typedef struct SWal           SWal;
+typedef struct SSyncRaftEntry SSyncRaftEntry;
+
 typedef enum {
   TAOS_SYNC_STATE_FOLLOWER = 100,
   TAOS_SYNC_STATE_CANDIDATE = 101,
@@ -38,6 +44,17 @@ typedef enum {
   TAOS_SYNC_STATE_ERROR = 103,
 } ESyncState;
 
+typedef enum {
+  TAOS_SYNC_PROPOSE_SUCCESS = 0,
+  TAOS_SYNC_PROPOSE_NOT_LEADER = 1,
+  TAOS_SYNC_PROPOSE_OTHER_ERROR = 2,
+} ESyncProposeCode;
+
+typedef enum {
+  TAOS_SYNC_FSM_CB_SUCCESS = 0,
+  TAOS_SYNC_FSM_CB_OTHER_ERROR = 1,
+} ESyncFsmCbCode;
+
 typedef struct SNodeInfo {
   uint16_t nodePort;
   char     nodeFqdn[TSDB_FQDN_LEN];
@@ -55,11 +72,6 @@ typedef struct SSnapshot {
   SyncTerm  lastApplyTerm;
 } SSnapshot;
 
-typedef enum {
-  TAOS_SYNC_FSM_CB_SUCCESS = 0,
-  TAOS_SYNC_FSM_CB_OTHER_ERROR,
-} ESyncFsmCbCode;
-
 typedef struct SFsmCbMeta {
   SyncIndex  index;
   bool       isWeak;
@@ -68,27 +80,15 @@ typedef struct SFsmCbMeta {
   uint64_t   seqNum;
 } SFsmCbMeta;
 
-struct SRpcMsg;
-typedef struct SRpcMsg SRpcMsg;
-
 typedef struct SSyncFSM {
   void* data;
-
   void (*FpCommitCb)(struct SSyncFSM* pFsm, const SRpcMsg* pMsg, SFsmCbMeta cbMeta);
   void (*FpPreCommitCb)(struct SSyncFSM* pFsm, const SRpcMsg* pMsg, SFsmCbMeta cbMeta);
   void (*FpRollBackCb)(struct SSyncFSM* pFsm, const SRpcMsg* pMsg, SFsmCbMeta cbMeta);
-
   int32_t (*FpGetSnapshot)(struct SSyncFSM* pFsm, SSnapshot* pSnapshot);
   int32_t (*FpRestoreSnapshot)(struct SSyncFSM* pFsm, const SSnapshot* snapshot);
-
 } SSyncFSM;
 
-struct SSyncRaftEntry;
-typedef struct SSyncRaftEntry SSyncRaftEntry;
-
-#define SYNC_INDEX_BEGIN 0
-#define SYNC_INDEX_INVALID -1
-
 // abstract definition of log store in raft
 // SWal implements it
 typedef struct SSyncLogStore {
@@ -117,11 +117,6 @@ typedef struct SSyncLogStore {
 
 } SSyncLogStore;
 
-struct SWal;
-typedef struct SWal SWal;
-
-struct SEpSet;
-typedef struct SEpSet SEpSet;
 
 typedef struct SSyncInfo {
   SyncGroupId vgId;
@@ -130,10 +125,8 @@ typedef struct SSyncInfo {
   SWal*       pWal;
   SSyncFSM*   pFsm;
   SMsgCb*     msgcb;
-
   int32_t (*FpSendMsg)(const SEpSet* pEpSet, SRpcMsg* pMsg);
   int32_t (*FpEqMsg)(const SMsgCb* msgcb, SRpcMsg* pMsg);
-
 } SSyncInfo;
 
 int32_t     syncInit();
@@ -148,27 +141,8 @@ const char* syncGetMyRoleStr(int64_t rid);
 SyncTerm    syncGetMyTerm(int64_t rid);
 void        syncGetEpSet(int64_t rid, SEpSet* pEpSet);
 int32_t     syncGetVgId(int64_t rid);
-
-typedef enum {
-  TAOS_SYNC_PROPOSE_SUCCESS = 0,
-  TAOS_SYNC_PROPOSE_NOT_LEADER,
-  TAOS_SYNC_PROPOSE_OTHER_ERROR,
-} ESyncProposeCode;
-
-int32_t syncPropose(int64_t rid, const SRpcMsg* pMsg, bool isWeak);
-
-bool syncEnvIsStart();
-
-extern int32_t sDebugFlag;
-
-//-----------------------------------------
-struct SSyncNode;
-typedef struct SSyncNode SSyncNode;
-
-struct SSyncBuffer;
-typedef struct SSyncBuffer SSyncBuffer;
-//-----------------------------------------
-
+int32_t     syncPropose(int64_t rid, const SRpcMsg* pMsg, bool isWeak);
+bool        syncEnvIsStart();
 const char* syncStr(ESyncState state);
 
 #ifdef __cplusplus
diff --git a/include/libs/sync/syncTools.h b/include/libs/sync/syncTools.h
index 01c25b93cc..4b160c9e61 100644
--- a/include/libs/sync/syncTools.h
+++ b/include/libs/sync/syncTools.h
@@ -20,9 +20,6 @@
 extern "C" {
 #endif
 
-#include "os.h"
-
-#include "cJSON.h"
 #include "trpc.h"
 
 // ------------------ ds -------------------
@@ -32,9 +29,6 @@ typedef struct SRaftId {
 } SRaftId;
 
 // ------------------ control -------------------
-struct SSyncNode;
-typedef struct SSyncNode SSyncNode;
-
 SSyncNode* syncNodeAcquire(int64_t rid);
 void       syncNodeRelease(SSyncNode* pNode);
 
diff --git a/source/dnode/vnode/inc/vnode.h b/source/dnode/vnode/inc/vnode.h
index b48a8775ce..68d4216bae 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 a034833a57..eb3382ac4c 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/dnode/vnode/src/vnd/vnodeOpen.c b/source/dnode/vnode/src/vnd/vnodeOpen.c
index ef86ac86e4..f0af677641 100644
--- a/source/dnode/vnode/src/vnd/vnodeOpen.c
+++ b/source/dnode/vnode/src/vnd/vnodeOpen.c
@@ -180,7 +180,6 @@ void vnodeClose(SVnode *pVnode) {
 
 // start the sync timer after the queue is ready
 int32_t vnodeStart(SVnode *pVnode) {
-  vnodeSyncSetMsgCb(pVnode);
   vnodeSyncStart(pVnode);
   return 0;
 }
diff --git a/source/dnode/vnode/src/vnd/vnodeSync.c b/source/dnode/vnode/src/vnd/vnodeSync.c
index bcef95baff..8659c41807 100644
--- a/source/dnode/vnode/src/vnd/vnodeSync.c
+++ b/source/dnode/vnode/src/vnd/vnodeSync.c
@@ -13,71 +13,62 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
+#define _DEFAULT_SOURCE
 #include "vnd.h"
 
+static int32_t   vnodeSyncEqMsg(const SMsgCb *msgcb, SRpcMsg *pMsg);
+static int32_t   vnodeSyncSendMsg(const SEpSet *pEpSet, SRpcMsg *pMsg);
+static SSyncFSM *vnodeSyncMakeFsm(SVnode *pVnode);
+static void      vnodeSyncCommitMsg(SSyncFSM *pFsm, const SRpcMsg *pMsg, SFsmCbMeta cbMeta);
+static void      vnodeSyncPreCommitMsg(SSyncFSM *pFsm, const SRpcMsg *pMsg, SFsmCbMeta cbMeta);
+static void      vnodeSyncRollBackMsg(SSyncFSM *pFsm, const SRpcMsg *pMsg, SFsmCbMeta cbMeta);
+static int32_t   vnodeSyncGetSnapshot(SSyncFSM *pFsm, SSnapshot *pSnapshot);
+
 int32_t vnodeSyncOpen(SVnode *pVnode, char *path) {
-  SSyncInfo syncInfo;
-  syncInfo.vgId = pVnode->config.vgId;
-  SSyncCfg *pCfg = &(syncInfo.syncCfg);
-  pCfg->replicaNum = pVnode->config.syncCfg.replicaNum;
-  pCfg->myIndex = pVnode->config.syncCfg.myIndex;
-  memcpy(pCfg->nodeInfo, pVnode->config.syncCfg.nodeInfo, sizeof(pCfg->nodeInfo));
+  SSyncInfo syncInfo = {
+      .vgId = pVnode->config.vgId,
+      .syncCfg = pVnode->config.syncCfg,
+      .pWal = pVnode->pWal,
+      .msgcb = NULL,
+      .FpSendMsg = vnodeSyncSendMsg,
+      .FpEqMsg = vnodeSyncEqMsg,
+  };
 
-  snprintf(syncInfo.path, sizeof(syncInfo.path), "%s/sync", path);
-  syncInfo.pWal = pVnode->pWal;
-
-  syncInfo.pFsm = syncVnodeMakeFsm(pVnode);
-  syncInfo.msgcb = NULL;
-  syncInfo.FpSendMsg = vnodeSyncSendMsg;
-  syncInfo.FpEqMsg = vnodeSyncEqMsg;
+  snprintf(syncInfo.path, sizeof(syncInfo.path), "%s%ssync", path, TD_DIRSEP);
+  syncInfo.pFsm = vnodeSyncMakeFsm(pVnode);
 
   pVnode->sync = syncOpen(&syncInfo);
-  assert(pVnode->sync > 0);
+  if (pVnode->sync <= 0) {
+    vError("vgId:%d, failed to open sync since %s", pVnode->config.vgId, terrstr());
+    return -1;
+  }
 
-  // for test
   setPingTimerMS(pVnode->sync, 3000);
   setElectTimerMS(pVnode->sync, 500);
   setHeartbeatTimerMS(pVnode->sync, 100);
-
   return 0;
 }
 
-int32_t vnodeSyncStart(SVnode *pVnode) {
+void vnodeSyncStart(SVnode *pVnode) {
+  syncSetMsgCb(pVnode->sync, &pVnode->msgCb);
   syncStart(pVnode->sync);
-  return 0;
 }
 
-void vnodeSyncClose(SVnode *pVnode) {
-  // stop by ref id
-  syncStop(pVnode->sync);
-}
-
-void vnodeSyncSetMsgCb(SVnode *pVnode) { syncSetMsgCb(pVnode->sync, &pVnode->msgCb); }
+void vnodeSyncClose(SVnode *pVnode) { syncStop(pVnode->sync); }
 
 int32_t vnodeSyncEqMsg(const SMsgCb *msgcb, SRpcMsg *pMsg) { return tmsgPutToQueue(msgcb, SYNC_QUEUE, pMsg); }
 
-int32_t vnodeSyncSendMsg(const SEpSet *pEpSet, SRpcMsg *pMsg) {
-  pMsg->info.noResp = 1;
-  return tmsgSendReq(pEpSet, pMsg);
-}
-
-int32_t vnodeSyncGetSnapshotCb(struct SSyncFSM *pFsm, SSnapshot *pSnapshot) {
-  SVnode *pVnode = (SVnode *)(pFsm->data);
-  vnodeGetSnapshot(pVnode, pSnapshot);
-
-  /*
-  pSnapshot->data = NULL;
-  pSnapshot->lastApplyIndex = 0;
-  pSnapshot->lastApplyTerm = 0;
-  */
+int32_t vnodeSyncSendMsg(const SEpSet *pEpSet, SRpcMsg *pMsg) { return tmsgSendReq(pEpSet, pMsg); }
 
+int32_t vnodeSyncGetSnapshot(SSyncFSM *pFsm, SSnapshot *pSnapshot) {
+  vnodeGetSnapshot(pFsm->data, pSnapshot);
   return 0;
 }
 
-void vnodeSyncCommitCb(struct SSyncFSM *pFsm, const SRpcMsg *pMsg, SFsmCbMeta cbMeta) {
+void vnodeSyncCommitMsg(SSyncFSM *pFsm, const SRpcMsg *pMsg, SFsmCbMeta cbMeta) {
   SyncIndex beginIndex = SYNC_INDEX_INVALID;
   if (pFsm->FpGetSnapshot != NULL) {
-    SSnapshot snapshot;
+    SSnapshot snapshot = {0};
     pFsm->FpGetSnapshot(pFsm, &snapshot);
     beginIndex = snapshot.lastApplyIndex;
   }
@@ -128,7 +119,7 @@ void vnodeSyncCommitCb(struct SSyncFSM *pFsm, const SRpcMsg *pMsg, SFsmCbMeta cb
   }
 }
 
-void vnodeSyncPreCommitCb(struct SSyncFSM *pFsm, const SRpcMsg *pMsg, SFsmCbMeta cbMeta) {
+void vnodeSyncPreCommitMsg(SSyncFSM *pFsm, const SRpcMsg *pMsg, SFsmCbMeta cbMeta) {
   char logBuf[256];
   snprintf(logBuf, sizeof(logBuf),
            "==callback== ==PreCommitCb== pFsm:%p, index:%ld, isWeak:%d, code:%d, state:%d %s \n", pFsm, cbMeta.index,
@@ -136,19 +127,19 @@ void vnodeSyncPreCommitCb(struct SSyncFSM *pFsm, const SRpcMsg *pMsg, SFsmCbMeta
   syncRpcMsgLog2(logBuf, (SRpcMsg *)pMsg);
 }
 
-void vnodeSyncRollBackCb(struct SSyncFSM *pFsm, const SRpcMsg *pMsg, SFsmCbMeta cbMeta) {
+void vnodeSyncRollBackMsg(SSyncFSM *pFsm, const SRpcMsg *pMsg, SFsmCbMeta cbMeta) {
   char logBuf[256];
   snprintf(logBuf, sizeof(logBuf), "==callback== ==RollBackCb== pFsm:%p, index:%ld, isWeak:%d, code:%d, state:%d %s \n",
            pFsm, cbMeta.index, cbMeta.isWeak, cbMeta.code, cbMeta.state, syncUtilState2String(cbMeta.state));
   syncRpcMsgLog2(logBuf, (SRpcMsg *)pMsg);
 }
 
-SSyncFSM *syncVnodeMakeFsm(SVnode *pVnode) {
-  SSyncFSM *pFsm = (SSyncFSM *)taosMemoryMalloc(sizeof(SSyncFSM));
+SSyncFSM *vnodeSyncMakeFsm(SVnode *pVnode) {
+  SSyncFSM *pFsm = taosMemoryCalloc(1, sizeof(SSyncFSM));
   pFsm->data = pVnode;
-  pFsm->FpCommitCb = vnodeSyncCommitCb;
-  pFsm->FpPreCommitCb = vnodeSyncPreCommitCb;
-  pFsm->FpRollBackCb = vnodeSyncRollBackCb;
-  pFsm->FpGetSnapshot = vnodeSyncGetSnapshotCb;
+  pFsm->FpCommitCb = vnodeSyncCommitMsg;
+  pFsm->FpPreCommitCb = vnodeSyncPreCommitMsg;
+  pFsm->FpRollBackCb = vnodeSyncRollBackMsg;
+  pFsm->FpGetSnapshot = vnodeSyncGetSnapshot;
   return pFsm;
-}
+}
\ No newline at end of file
diff --git a/source/libs/sync/inc/syncInt.h b/source/libs/sync/inc/syncInt.h
index 36f22db05f..768e1c1cf1 100644
--- a/source/libs/sync/inc/syncInt.h
+++ b/source/libs/sync/inc/syncInt.h
@@ -20,135 +20,41 @@
 extern "C" {
 #endif
 
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include "cJSON.h"
 #include "sync.h"
 #include "syncTools.h"
-#include "taosdef.h"
-#include "tglobal.h"
 #include "tlog.h"
 #include "ttimer.h"
 
-#define sFatal(...)                                              \
-  {                                                              \
-    if (sDebugFlag & DEBUG_FATAL) {                              \
-      taosPrintLog("SYN FATAL ", DEBUG_FATAL, 255, __VA_ARGS__); \
-    }                                                            \
-  }
-#define sError(...)                                              \
-  {                                                              \
-    if (sDebugFlag & DEBUG_ERROR) {                              \
-      taosPrintLog("SYN ERROR ", DEBUG_ERROR, 255, __VA_ARGS__); \
-    }                                                            \
-  }
-#define sWarn(...)                                             \
-  {                                                            \
-    if (sDebugFlag & DEBUG_WARN) {                             \
-      taosPrintLog("SYN WARN ", DEBUG_WARN, 255, __VA_ARGS__); \
-    }                                                          \
-  }
-#define sInfo(...)                                             \
-  {                                                            \
-    if (sDebugFlag & DEBUG_INFO) {                             \
-      taosPrintLog("SYN INFO ", DEBUG_INFO, 255, __VA_ARGS__); \
-    }                                                          \
-  }
-#define sDebug(...)                                                     \
-  {                                                                     \
-    if (sDebugFlag & DEBUG_DEBUG) {                                     \
-      taosPrintLog("SYN DEBUG ", DEBUG_DEBUG, sDebugFlag, __VA_ARGS__); \
-    }                                                                   \
-  }
-#define sTrace(...)                                                     \
-  {                                                                     \
-    if (sDebugFlag & DEBUG_TRACE) {                                     \
-      taosPrintLog("SYN TRACE ", DEBUG_TRACE, sDebugFlag, __VA_ARGS__); \
-    }                                                                   \
-  }
+// clang-format off
+#define sFatal(...) do { if (sDebugFlag & DEBUG_FATAL) { taosPrintLog("SYN FATAL ", DEBUG_FATAL, 255, __VA_ARGS__); }}     while(0)
+#define sError(...) do { if (sDebugFlag & DEBUG_ERROR) { taosPrintLog("SYN ERROR ", DEBUG_ERROR, 255, __VA_ARGS__); }}     while(0)
+#define sWarn(...)  do { if (sDebugFlag & DEBUG_WARN)  { taosPrintLog("SYN WARN ", DEBUG_WARN, 255, __VA_ARGS__); }}       while(0)
+#define sInfo(...)  do { if (sDebugFlag & DEBUG_INFO)  { taosPrintLog("SYN ", DEBUG_INFO, 255, __VA_ARGS__); }}            while(0)
+#define sDebug(...) do { if (sDebugFlag & DEBUG_DEBUG) { taosPrintLog("SYN ", DEBUG_DEBUG, sDebugFlag, __VA_ARGS__); }}    while(0)
+#define sTrace(...) do { if (sDebugFlag & DEBUG_TRACE) { taosPrintLog("SYN ", DEBUG_TRACE, sDebugFlag, __VA_ARGS__); }}    while(0)
+#define sFatalLong(...) do { if (sDebugFlag & DEBUG_FATAL) { taosPrintLongString("SYN FATAL ", DEBUG_FATAL, 255, __VA_ARGS__); }}     while(0)
+#define sErrorLong(...) do { if (sDebugFlag & DEBUG_ERROR) { taosPrintLongString("SYN ERROR ", DEBUG_ERROR, 255, __VA_ARGS__); }}     while(0)
+#define sWarnLong(...)  do { if (sDebugFlag & DEBUG_WARN)  { taosPrintLongString("SYN WARN ", DEBUG_WARN, 255, __VA_ARGS__); }}       while(0)
+#define sInfoLong(...)  do { if (sDebugFlag & DEBUG_INFO)  { taosPrintLongString("SYN ", DEBUG_INFO, 255, __VA_ARGS__); }}            while(0)
+#define sDebugLong(...) do { if (sDebugFlag & DEBUG_DEBUG) { taosPrintLongString("SYN ", DEBUG_DEBUG, sDebugFlag, __VA_ARGS__); }}    while(0)
+#define sTraceLong(...) do { if (sDebugFlag & DEBUG_TRACE) { taosPrintLongString("SYN ", DEBUG_TRACE, sDebugFlag, __VA_ARGS__); }}    while(0)
+// clang-format on
 
-#define sFatalLong(...)                                                 \
-  {                                                                     \
-    if (sDebugFlag & DEBUG_FATAL) {                                     \
-      taosPrintLongString("SYN FATAL ", DEBUG_FATAL, 255, __VA_ARGS__); \
-    }                                                                   \
-  }
-#define sErrorLong(...)                                                 \
-  {                                                                     \
-    if (sDebugFlag & DEBUG_ERROR) {                                     \
-      taosPrintLongString("SYN ERROR ", DEBUG_ERROR, 255, __VA_ARGS__); \
-    }                                                                   \
-  }
-#define sWarnLong(...)                                                \
-  {                                                                   \
-    if (sDebugFlag & DEBUG_WARN) {                                    \
-      taosPrintLongString("SYN WARN ", DEBUG_WARN, 255, __VA_ARGS__); \
-    }                                                                 \
-  }
-#define sInfoLong(...)                                                \
-  {                                                                   \
-    if (sDebugFlag & DEBUG_INFO) {                                    \
-      taosPrintLongString("SYN INFO ", DEBUG_INFO, 255, __VA_ARGS__); \
-    }                                                                 \
-  }
-#define sDebugLong(...)                                                        \
-  {                                                                            \
-    if (sDebugFlag & DEBUG_DEBUG) {                                            \
-      taosPrintLongString("SYN DEBUG ", DEBUG_DEBUG, sDebugFlag, __VA_ARGS__); \
-    }                                                                          \
-  }
-#define sTraceLong(...)                                                        \
-  {                                                                            \
-    if (sDebugFlag & DEBUG_TRACE) {                                            \
-      taosPrintLongString("SYN TRACE ", DEBUG_TRACE, sDebugFlag, __VA_ARGS__); \
-    }                                                                          \
-  }
-
-struct SyncTimeout;
-typedef struct SyncTimeout SyncTimeout;
-
-struct SyncClientRequest;
-typedef struct SyncClientRequest SyncClientRequest;
-
-struct SyncPing;
-typedef struct SyncPing SyncPing;
-
-struct SyncPingReply;
-typedef struct SyncPingReply SyncPingReply;
-
-struct SyncRequestVote;
-typedef struct SyncRequestVote SyncRequestVote;
-
-struct SyncRequestVoteReply;
-typedef struct SyncRequestVoteReply SyncRequestVoteReply;
-
-struct SyncAppendEntries;
-typedef struct SyncAppendEntries SyncAppendEntries;
-
-struct SyncAppendEntriesReply;
+typedef struct SyncTimeout            SyncTimeout;
+typedef struct SyncClientRequest      SyncClientRequest;
+typedef struct SyncPing               SyncPing;
+typedef struct SyncPingReply          SyncPingReply;
+typedef struct SyncRequestVote        SyncRequestVote;
+typedef struct SyncRequestVoteReply   SyncRequestVoteReply;
+typedef struct SyncAppendEntries      SyncAppendEntries;
 typedef struct SyncAppendEntriesReply SyncAppendEntriesReply;
-
-struct SSyncEnv;
-typedef struct SSyncEnv SSyncEnv;
-
-struct SRaftStore;
-typedef struct SRaftStore SRaftStore;
-
-struct SVotesGranted;
-typedef struct SVotesGranted SVotesGranted;
-
-struct SVotesRespond;
-typedef struct SVotesRespond SVotesRespond;
-
-struct SSyncIndexMgr;
-typedef struct SSyncIndexMgr SSyncIndexMgr;
-
-struct SRaftCfg;
-typedef struct SRaftCfg SRaftCfg;
-
-struct SSyncRespMgr;
-typedef struct SSyncRespMgr SSyncRespMgr;
+typedef struct SSyncEnv               SSyncEnv;
+typedef struct SRaftStore             SRaftStore;
+typedef struct SVotesGranted          SVotesGranted;
+typedef struct SVotesRespond          SVotesRespond;
+typedef struct SSyncIndexMgr          SSyncIndexMgr;
+typedef struct SRaftCfg               SRaftCfg;
+typedef struct SSyncRespMgr           SSyncRespMgr;
 
 typedef struct SSyncNode {
   // init by SSyncInfo
diff --git a/source/libs/sync/src/syncMain.c b/source/libs/sync/src/syncMain.c
index 56389de88a..d9ff60bbe2 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 b8a9bec108..630d96054b 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);