diff --git a/source/dnode/mnode/impl/src/mndSync.c b/source/dnode/mnode/impl/src/mndSync.c
index 36f5d31676..d669994128 100644
--- a/source/dnode/mnode/impl/src/mndSync.c
+++ b/source/dnode/mnode/impl/src/mndSync.c
@@ -475,7 +475,7 @@ int32_t mndInitSync(SMnode *pMnode) {
   snprintf(syncInfo.path, sizeof(syncInfo.path), "%s%ssync", pMnode->path, TD_DIRSEP);
   syncInfo.pFsm = mndSyncMakeFsm(pMnode);
 
-  mInfo("vgId:1, start to open sync, replica:%d selfIndex:%d", pMgmt->numOfReplicas, pMgmt->selfIndex);
+  mInfo("vgId:1, start to open mnode sync, replica:%d selfIndex:%d", pMgmt->numOfReplicas, pMgmt->selfIndex);
   SSyncCfg *pCfg = &syncInfo.syncCfg;
   pCfg->totalReplicaNum = pMgmt->numOfTotalReplicas;
   pCfg->replicaNum = pMgmt->numOfReplicas;
@@ -502,7 +502,7 @@ int32_t mndInitSync(SMnode *pMnode) {
   }
   pMnode->pSdb->sync = pMgmt->sync;
 
-  mInfo("mnode-sync is opened, id:%" PRId64, pMgmt->sync);
+  mInfo("vgId:1, mnode sync is opened, id:%" PRId64, pMgmt->sync);
   TAOS_RETURN(code);
 }
 
@@ -606,12 +606,13 @@ int32_t mndSyncPropose(SMnode *pMnode, SSdbRaw *pRaw, int32_t transId) {
 }
 
 void mndSyncStart(SMnode *pMnode) {
+  mInfo("vgId:1, start to start mnode sync");
   SSyncMgmt *pMgmt = &pMnode->syncMgmt;
   if (syncStart(pMgmt->sync) < 0) {
     mError("vgId:1, failed to start sync, id:%" PRId64, pMgmt->sync);
     return;
   }
-  mInfo("vgId:1, sync started, id:%" PRId64, pMgmt->sync);
+  mInfo("vgId:1, mnode sync started, id:%" PRId64, pMgmt->sync);
 }
 
 void mndSyncStop(SMnode *pMnode) {
diff --git a/source/dnode/mnode/impl/src/mndTrans.c b/source/dnode/mnode/impl/src/mndTrans.c
index 521539759c..63cab4168a 100644
--- a/source/dnode/mnode/impl/src/mndTrans.c
+++ b/source/dnode/mnode/impl/src/mndTrans.c
@@ -837,6 +837,9 @@ static bool mndCheckTransConflict(SMnode *pMnode, STrans *pNew) {
 
   if (pNew->conflict == TRN_CONFLICT_NOTHING) return conflict;
 
+  int32_t size = sdbGetSize(pMnode->pSdb, SDB_TRANS);
+  mInfo("trans:%d, trans hash size %d", pNew->id, size);
+
   while (1) {
     pIter = sdbFetch(pMnode->pSdb, SDB_TRANS, pIter, (void **)&pTrans);
     if (pIter == NULL) break;
@@ -905,14 +908,14 @@ int32_t mndTransCheckConflict(SMnode *pMnode, STrans *pTrans) {
   if (pTrans->conflict == TRN_CONFLICT_DB || pTrans->conflict == TRN_CONFLICT_DB_INSIDE) {
     if (strlen(pTrans->dbname) == 0 && strlen(pTrans->stbname) == 0) {
       code = TSDB_CODE_MND_TRANS_CONFLICT;
-      mError("trans:%d, failed to prepare conflict db not set", pTrans->id);
+      mError("trans:%d, failed to check tran conflict since db not set", pTrans->id);
       TAOS_RETURN(code);
     }
   }
 
   if (mndCheckTransConflict(pMnode, pTrans)) {
     code = TSDB_CODE_MND_TRANS_CONFLICT;
-    mError("trans:%d, failed to prepare since %s", pTrans->id, tstrerror(code));
+    mError("trans:%d, failed to check tran conflict since %s", pTrans->id, tstrerror(code));
     TAOS_RETURN(code);
   }
 
@@ -948,7 +951,7 @@ int32_t mndTransCheckConflictWithCompact(SMnode *pMnode, STrans *pTrans) {
 
   if (conflict) {
     code = TSDB_CODE_MND_TRANS_CONFLICT_COMPACT;
-    mError("trans:%d, failed to prepare since %s", pTrans->id, tstrerror(code));
+    mError("trans:%d, failed to check tran conflict with compact since %s", pTrans->id, tstrerror(code));
     TAOS_RETURN(code);
   }
 
diff --git a/source/libs/sync/inc/syncUtil.h b/source/libs/sync/inc/syncUtil.h
index f0bf095935..1606f47592 100644
--- a/source/libs/sync/inc/syncUtil.h
+++ b/source/libs/sync/inc/syncUtil.h
@@ -113,7 +113,8 @@ void syncLogRecvSyncSnapshotRsp(SSyncNode* pSyncNode, const SyncSnapshotRsp* pMs
 void syncLogRecvAppendEntries(SSyncNode* pSyncNode, const SyncAppendEntries* pMsg, const char* s);
 void syncLogSendAppendEntries(SSyncNode* pSyncNode, const SyncAppendEntries* pMsg, const char* s);
 
-void syncLogRecvRequestVote(SSyncNode* pSyncNode, const SyncRequestVote* pMsg, int32_t voteGranted, const char* s);
+void syncLogRecvRequestVote(SSyncNode* pSyncNode, const SyncRequestVote* pMsg, int32_t voteGranted, const char* s,
+                            const char* opt);
 void syncLogSendRequestVote(SSyncNode* pSyncNode, const SyncRequestVote* pMsg, const char* s);
 
 void syncLogRecvRequestVoteReply(SSyncNode* pSyncNode, const SyncRequestVoteReply* pMsg, const char* s);
diff --git a/source/libs/sync/src/syncMain.c b/source/libs/sync/src/syncMain.c
index 92c8127b50..a0236c38b8 100644
--- a/source/libs/sync/src/syncMain.c
+++ b/source/libs/sync/src/syncMain.c
@@ -61,6 +61,7 @@ static int32_t syncDoLeaderTransfer(SSyncNode* ths, SRpcMsg* pRpcMsg, SSyncRaftE
 static ESyncStrategy syncNodeStrategy(SSyncNode* pSyncNode);
 
 int64_t syncOpen(SSyncInfo* pSyncInfo, int32_t vnodeVersion) {
+  sInfo("vgId:%d, start to open sync", pSyncInfo->vgId);
   SSyncNode* pSyncNode = syncNodeOpen(pSyncInfo, vnodeVersion);
   if (pSyncNode == NULL) {
     sError("vgId:%d, failed to open sync node", pSyncInfo->vgId);
@@ -79,6 +80,7 @@ int64_t syncOpen(SSyncInfo* pSyncInfo, int32_t vnodeVersion) {
   pSyncNode->hbBaseLine = pSyncInfo->heartbeatMs;
   pSyncNode->heartbeatTimerMS = pSyncInfo->heartbeatMs;
   pSyncNode->msgcb = pSyncInfo->msgcb;
+  sInfo("vgId:%d, sync opened", pSyncInfo->vgId);
   return pSyncNode->rid;
 }
 
@@ -91,6 +93,7 @@ int32_t syncStart(int64_t rid) {
     sError("failed to acquire rid:%" PRId64 " of tsNodeReftId for pSyncNode", rid);
     TAOS_RETURN(code);
   }
+  sInfo("vgId:%d, begin to start sync", pSyncNode->vgId);
 
   if ((code = syncNodeRestore(pSyncNode)) < 0) {
     sError("vgId:%d, failed to restore sync log buffer since %s", pSyncNode->vgId, tstrerror(code));
@@ -103,6 +106,9 @@ int32_t syncStart(int64_t rid) {
   }
 
   syncNodeRelease(pSyncNode);
+
+  sInfo("vgId:%d, sync started", pSyncNode->vgId);
+
   TAOS_RETURN(code);
 
 _err:
@@ -1370,7 +1376,7 @@ SSyncNode* syncNodeOpen(SSyncInfo* pSyncInfo, int32_t vnodeVersion) {
   pSyncNode->hbrSlowNum = 0;
   pSyncNode->tmrRoutineNum = 0;
 
-  sNInfo(pSyncNode, "sync open, node:%p electInterval:%d heartbeatInterval:%d heartbeatTimeout:%d", pSyncNode,
+  sNInfo(pSyncNode, "sync node opened, node:%p electInterval:%d heartbeatInterval:%d heartbeatTimeout:%d", pSyncNode,
          tsElectInterval, tsHeartbeatInterval, tsHeartbeatTimeout);
   return pSyncNode;
 
@@ -1434,6 +1440,7 @@ int32_t syncNodeRestore(SSyncNode* pSyncNode) {
 
 int32_t syncNodeStart(SSyncNode* pSyncNode) {
   // start raft
+  sInfo("vgId:%d, begin to start sync node", pSyncNode->vgId);
   if (pSyncNode->raftCfg.cfg.nodeInfo[pSyncNode->raftCfg.cfg.myIndex].nodeRole == TAOS_SYNC_ROLE_LEARNER) {
     syncNodeBecomeLearner(pSyncNode, "first start");
   } else {
@@ -1453,6 +1460,7 @@ int32_t syncNodeStart(SSyncNode* pSyncNode) {
   if (ret != 0) {
     sError("vgId:%d, failed to start ping timer since %s", pSyncNode->vgId, tstrerror(ret));
   }
+  sInfo("vgId:%d, sync node started", pSyncNode->vgId);
   return ret;
 }
 
@@ -2034,6 +2042,8 @@ void syncNodeBecomeFollower(SSyncNode* pSyncNode, const char* debugStr) {
 
   // reset elect timer
   syncNodeResetElectTimer(pSyncNode);
+
+  sInfo("vgId:%d, become follower. %s", pSyncNode->vgId, debugStr);
 }
 
 void syncNodeBecomeLearner(SSyncNode* pSyncNode, const char* debugStr) {
diff --git a/source/libs/sync/src/syncRequestVote.c b/source/libs/sync/src/syncRequestVote.c
index 738e558033..c8e81b13df 100644
--- a/source/libs/sync/src/syncRequestVote.c
+++ b/source/libs/sync/src/syncRequestVote.c
@@ -91,9 +91,11 @@ int32_t syncNodeOnRequestVote(SSyncNode* ths, const SRpcMsg* pRpcMsg) {
   SyncRequestVote* pMsg = pRpcMsg->pCont;
   bool             resetElect = false;
 
+  syncLogRecvRequestVote(ths, pMsg, -1, "", "recv");
+
   // if already drop replica, do not process
   if (!syncNodeInRaftGroup(ths, &pMsg->srcId)) {
-    syncLogRecvRequestVote(ths, pMsg, -1, "not in my config");
+    syncLogRecvRequestVote(ths, pMsg, -1, "not in my config", "process");
 
     TAOS_RETURN(TSDB_CODE_SYN_MISMATCHED_SIGNATURE);
   }
@@ -133,7 +135,7 @@ int32_t syncNodeOnRequestVote(SSyncNode* ths, const SRpcMsg* pRpcMsg) {
   if (!(!grant || pMsg->term == pReply->term)) return TSDB_CODE_SYN_INTERNAL_ERROR;
 
   // trace log
-  syncLogRecvRequestVote(ths, pMsg, pReply->voteGranted, "");
+  syncLogRecvRequestVote(ths, pMsg, pReply->voteGranted, "", "proceed");
   syncLogSendRequestVoteReply(ths, pReply, "");
   (void)syncNodeSendMsgById(&pReply->destId, ths, &rpcMsg);
 
diff --git a/source/libs/sync/src/syncUtil.c b/source/libs/sync/src/syncUtil.c
index a30bd9064f..553560f089 100644
--- a/source/libs/sync/src/syncUtil.c
+++ b/source/libs/sync/src/syncUtil.c
@@ -470,13 +470,13 @@ void syncLogSendAppendEntries(SSyncNode* pSyncNode, const SyncAppendEntries* pMs
           pMsg->commitIndex, pMsg->dataLen, s);
 }
 
-void syncLogRecvRequestVote(SSyncNode* pSyncNode, const SyncRequestVote* pMsg, int32_t voteGranted,
-                            const char* errmsg) {
+void syncLogRecvRequestVote(SSyncNode* pSyncNode, const SyncRequestVote* pMsg, int32_t voteGranted, const char* errmsg,
+                            const char* opt) {
   char statusMsg[64];
   snprintf(statusMsg, sizeof(statusMsg), "granted:%d", voteGranted);
   sNInfo(pSyncNode,
-         "recv sync-request-vote from dnode:%d, {term:%" PRId64 ", last-index:%" PRId64 ", last-term:%" PRId64 "}, %s",
-         DID(&pMsg->srcId), pMsg->term, pMsg->lastLogIndex, pMsg->lastLogTerm,
+         "%s sync-request-vote from dnode:%d, {term:%" PRId64 ", last-index:%" PRId64 ", last-term:%" PRId64 "}, %s",
+         opt, DID(&pMsg->srcId), pMsg->term, pMsg->lastLogIndex, pMsg->lastLogTerm,
          (voteGranted != -1) ? statusMsg : errmsg);
 }