diff --git a/source/libs/sync/src/syncMain.c b/source/libs/sync/src/syncMain.c
index 37d0dff095..5af5b5f988 100644
--- a/source/libs/sync/src/syncMain.c
+++ b/source/libs/sync/src/syncMain.c
@@ -1562,7 +1562,7 @@ char* syncNode2Str(const SSyncNode* pSyncNode) {
   return serialized;
 }
 
-void syncNodeEventLog(const SSyncNode* pSyncNode, char* str) {
+inline void syncNodeEventLog(const SSyncNode* pSyncNode, char* str) {
   int32_t userStrLen = strlen(str);
 
   SSnapshot snapshot = {.data = NULL, .lastApplyIndex = -1, .lastApplyTerm = 0};
@@ -1634,7 +1634,7 @@ void syncNodeEventLog(const SSyncNode* pSyncNode, char* str) {
   taosMemoryFree(pCfgStr);
 }
 
-void syncNodeErrorLog(const SSyncNode* pSyncNode, char* str) {
+inline void syncNodeErrorLog(const SSyncNode* pSyncNode, char* str) {
   int32_t userStrLen = strlen(str);
 
   SSnapshot snapshot = {.data = NULL, .lastApplyIndex = -1, .lastApplyTerm = 0};
@@ -1701,7 +1701,7 @@ void syncNodeErrorLog(const SSyncNode* pSyncNode, char* str) {
   taosMemoryFree(pCfgStr);
 }
 
-char* syncNode2SimpleStr(const SSyncNode* pSyncNode) {
+inline char* syncNode2SimpleStr(const SSyncNode* pSyncNode) {
   int   len = 256;
   char* s = (char*)taosMemoryMalloc(len);
 
@@ -1724,7 +1724,7 @@ char* syncNode2SimpleStr(const SSyncNode* pSyncNode) {
   return s;
 }
 
-bool syncNodeInConfig(SSyncNode* pSyncNode, const SSyncCfg* config) {
+inline bool syncNodeInConfig(SSyncNode* pSyncNode, const SSyncCfg* config) {
   bool b1 = false;
   bool b2 = false;
 
@@ -2942,7 +2942,7 @@ bool syncNodeCanChange(SSyncNode* pSyncNode) {
   return true;
 }
 
-void syncLogSendRequestVote(SSyncNode* pSyncNode, const SyncRequestVote* pMsg, const char* s) {
+inline void syncLogSendRequestVote(SSyncNode* pSyncNode, const SyncRequestVote* pMsg, const char* s) {
   char     host[64];
   uint16_t port;
   syncUtilU642Addr(pMsg->destId.addr, host, sizeof(host), &port);
@@ -2953,7 +2953,7 @@ void syncLogSendRequestVote(SSyncNode* pSyncNode, const SyncRequestVote* pMsg, c
   syncNodeEventLog(pSyncNode, logBuf);
 }
 
-void syncLogRecvRequestVote(SSyncNode* pSyncNode, const SyncRequestVote* pMsg, const char* s) {
+inline void syncLogRecvRequestVote(SSyncNode* pSyncNode, const SyncRequestVote* pMsg, const char* s) {
   char     logBuf[256];
   char     host[64];
   uint16_t port;
@@ -2964,7 +2964,7 @@ void syncLogRecvRequestVote(SSyncNode* pSyncNode, const SyncRequestVote* pMsg, c
   syncNodeEventLog(pSyncNode, logBuf);
 }
 
-void syncLogSendRequestVoteReply(SSyncNode* pSyncNode, const SyncRequestVoteReply* pMsg, const char* s) {
+inline void syncLogSendRequestVoteReply(SSyncNode* pSyncNode, const SyncRequestVoteReply* pMsg, const char* s) {
   char     host[64];
   uint16_t port;
   syncUtilU642Addr(pMsg->destId.addr, host, sizeof(host), &port);
@@ -2974,7 +2974,7 @@ void syncLogSendRequestVoteReply(SSyncNode* pSyncNode, const SyncRequestVoteRepl
   syncNodeEventLog(pSyncNode, logBuf);
 }
 
-void syncLogRecvRequestVoteReply(SSyncNode* pSyncNode, const SyncRequestVoteReply* pMsg, const char* s) {
+inline void syncLogRecvRequestVoteReply(SSyncNode* pSyncNode, const SyncRequestVoteReply* pMsg, const char* s) {
   char     host[64];
   uint16_t port;
   syncUtilU642Addr(pMsg->srcId.addr, host, sizeof(host), &port);
@@ -2984,7 +2984,7 @@ void syncLogRecvRequestVoteReply(SSyncNode* pSyncNode, const SyncRequestVoteRepl
   syncNodeEventLog(pSyncNode, logBuf);
 }
 
-void syncLogSendAppendEntries(SSyncNode* pSyncNode, const SyncAppendEntries* pMsg, const char* s) {
+inline void syncLogSendAppendEntries(SSyncNode* pSyncNode, const SyncAppendEntries* pMsg, const char* s) {
   char     host[64];
   uint16_t port;
   syncUtilU642Addr(pMsg->destId.addr, host, sizeof(host), &port);
@@ -2999,7 +2999,7 @@ void syncLogSendAppendEntries(SSyncNode* pSyncNode, const SyncAppendEntries* pMs
   syncNodeEventLog(pSyncNode, logBuf);
 }
 
-void syncLogRecvAppendEntries(SSyncNode* pSyncNode, const SyncAppendEntries* pMsg, const char* s) {
+inline void syncLogRecvAppendEntries(SSyncNode* pSyncNode, const SyncAppendEntries* pMsg, const char* s) {
   char     host[64];
   uint16_t port;
   syncUtilU642Addr(pMsg->srcId.addr, host, sizeof(host), &port);
@@ -3014,7 +3014,7 @@ void syncLogRecvAppendEntries(SSyncNode* pSyncNode, const SyncAppendEntries* pMs
   syncNodeEventLog(pSyncNode, logBuf);
 }
 
-void syncLogSendAppendEntriesBatch(SSyncNode* pSyncNode, const SyncAppendEntriesBatch* pMsg, const char* s) {
+inline void syncLogSendAppendEntriesBatch(SSyncNode* pSyncNode, const SyncAppendEntriesBatch* pMsg, const char* s) {
   char     host[64];
   uint16_t port;
   syncUtilU642Addr(pMsg->destId.addr, host, sizeof(host), &port);
@@ -3027,7 +3027,7 @@ void syncLogSendAppendEntriesBatch(SSyncNode* pSyncNode, const SyncAppendEntries
   syncNodeEventLog(pSyncNode, logBuf);
 }
 
-void syncLogRecvAppendEntriesBatch(SSyncNode* pSyncNode, const SyncAppendEntriesBatch* pMsg, const char* s) {
+inline void syncLogRecvAppendEntriesBatch(SSyncNode* pSyncNode, const SyncAppendEntriesBatch* pMsg, const char* s) {
   char     host[64];
   uint16_t port;
   syncUtilU642Addr(pMsg->srcId.addr, host, sizeof(host), &port);
@@ -3040,7 +3040,7 @@ void syncLogRecvAppendEntriesBatch(SSyncNode* pSyncNode, const SyncAppendEntries
   syncNodeEventLog(pSyncNode, logBuf);
 }
 
-void syncLogSendAppendEntriesReply(SSyncNode* pSyncNode, const SyncAppendEntriesReply* pMsg, const char* s) {
+inline void syncLogSendAppendEntriesReply(SSyncNode* pSyncNode, const SyncAppendEntriesReply* pMsg, const char* s) {
   char     host[64];
   uint16_t port;
   syncUtilU642Addr(pMsg->destId.addr, host, sizeof(host), &port);
@@ -3052,7 +3052,7 @@ void syncLogSendAppendEntriesReply(SSyncNode* pSyncNode, const SyncAppendEntries
   syncNodeEventLog(pSyncNode, logBuf);
 }
 
-void syncLogRecvAppendEntriesReply(SSyncNode* pSyncNode, const SyncAppendEntriesReply* pMsg, const char* s) {
+inline void syncLogRecvAppendEntriesReply(SSyncNode* pSyncNode, const SyncAppendEntriesReply* pMsg, const char* s) {
   char     host[64];
   uint16_t port;
   syncUtilU642Addr(pMsg->srcId.addr, host, sizeof(host), &port);
diff --git a/source/libs/sync/src/syncRequestVote.c b/source/libs/sync/src/syncRequestVote.c
index bad32c5f91..806c138b72 100644
--- a/source/libs/sync/src/syncRequestVote.c
+++ b/source/libs/sync/src/syncRequestVote.c
@@ -51,15 +51,21 @@ int32_t syncNodeOnRequestVoteCb(SSyncNode* ths, SyncRequestVote* pMsg) {
     return -1;
   }
 
+  bool logOK = (pMsg->lastLogTerm > ths->pLogStore->getLastTerm(ths->pLogStore)) ||
+               ((pMsg->lastLogTerm == ths->pLogStore->getLastTerm(ths->pLogStore)) &&
+                (pMsg->lastLogIndex >= ths->pLogStore->getLastIndex(ths->pLogStore)));
+
+  // log not ok, do not update term, ignore it
+  if (pMsg->term > ths->pRaftStore->currentTerm && !logOK) {
+    return -1;
+  }
+
   // maybe update term
   if (pMsg->term > ths->pRaftStore->currentTerm) {
     syncNodeUpdateTerm(ths, pMsg->term);
   }
   ASSERT(pMsg->term <= ths->pRaftStore->currentTerm);
 
-  bool logOK = (pMsg->lastLogTerm > ths->pLogStore->getLastTerm(ths->pLogStore)) ||
-               ((pMsg->lastLogTerm == ths->pLogStore->getLastTerm(ths->pLogStore)) &&
-                (pMsg->lastLogIndex >= ths->pLogStore->getLastIndex(ths->pLogStore)));
   bool grant = (pMsg->term == ths->pRaftStore->currentTerm) && logOK &&
                ((!raftStoreHasVoted(ths->pRaftStore)) || (syncUtilSameId(&(ths->pRaftStore->voteFor), &(pMsg->srcId))));
   if (grant) {
@@ -94,48 +100,6 @@ int32_t syncNodeOnRequestVoteCb(SSyncNode* ths, SyncRequestVote* pMsg) {
   return ret;
 }
 
-#if 0
-int32_t syncNodeOnRequestVoteCb(SSyncNode* ths, SyncRequestVote* pMsg) {
-  int32_t ret = 0;
-
-  char logBuf[128] = {0};
-  snprintf(logBuf, sizeof(logBuf), "==syncNodeOnRequestVoteCb== term:%" PRIu64, ths->pRaftStore->currentTerm);
-  syncRequestVoteLog2(logBuf, pMsg);
-
-  if (pMsg->term > ths->pRaftStore->currentTerm) {
-    syncNodeUpdateTerm(ths, pMsg->term);
-  }
-  ASSERT(pMsg->term <= ths->pRaftStore->currentTerm);
-
-  bool logOK = (pMsg->lastLogTerm > ths->pLogStore->getLastTerm(ths->pLogStore)) ||
-               ((pMsg->lastLogTerm == ths->pLogStore->getLastTerm(ths->pLogStore)) &&
-                (pMsg->lastLogIndex >= ths->pLogStore->getLastIndex(ths->pLogStore)));
-  bool grant = (pMsg->term == ths->pRaftStore->currentTerm) && logOK &&
-               ((!raftStoreHasVoted(ths->pRaftStore)) || (syncUtilSameId(&(ths->pRaftStore->voteFor), &(pMsg->srcId))));
-  if (grant) {
-    // maybe has already voted for pMsg->srcId
-    // vote again, no harm
-    raftStoreVote(ths->pRaftStore, &(pMsg->srcId));
-
-    // forbid elect for this round
-    syncNodeResetElectTimer(ths);
-  }
-
-  SyncRequestVoteReply* pReply = syncRequestVoteReplyBuild(ths->vgId);
-  pReply->srcId = ths->myRaftId;
-  pReply->destId = pMsg->srcId;
-  pReply->term = ths->pRaftStore->currentTerm;
-  pReply->voteGranted = grant;
-
-  SRpcMsg rpcMsg;
-  syncRequestVoteReply2RpcMsg(pReply, &rpcMsg);
-  syncNodeSendMsgById(&pReply->destId, ths, &rpcMsg);
-  syncRequestVoteReplyDestroy(pReply);
-
-  return ret;
-}
-#endif
-
 static bool syncNodeOnRequestVoteLogOK(SSyncNode* pSyncNode, SyncRequestVote* pMsg) {
   SyncTerm  myLastTerm = syncNodeGetLastTerm(pSyncNode);
   SyncIndex myLastIndex = syncNodeGetLastIndex(pSyncNode);
diff --git a/source/libs/sync/src/syncRequestVoteReply.c b/source/libs/sync/src/syncRequestVoteReply.c
index 566b80881f..05a1708b0b 100644
--- a/source/libs/sync/src/syncRequestVoteReply.c
+++ b/source/libs/sync/src/syncRequestVoteReply.c
@@ -93,65 +93,6 @@ int32_t syncNodeOnRequestVoteReplyCb(SSyncNode* ths, SyncRequestVoteReply* pMsg)
   return 0;
 }
 
-#if 0
-int32_t syncNodeOnRequestVoteReplyCb(SSyncNode* ths, SyncRequestVoteReply* pMsg) {
-  int32_t ret = 0;
-
-  char logBuf[128] = {0};
-  snprintf(logBuf, sizeof(logBuf), "==syncNodeOnRequestVoteReplyCb== term:%" PRIu64, ths->pRaftStore->currentTerm);
-  syncRequestVoteReplyLog2(logBuf, pMsg);
-
-  if (pMsg->term < ths->pRaftStore->currentTerm) {
-    sTrace("DropStaleResponse, receive term:%" PRIu64 ", current term:%" PRIu64 "", pMsg->term,
-           ths->pRaftStore->currentTerm);
-    return ret;
-  }
-
-  // ASSERT(!(pMsg->term > ths->pRaftStore->currentTerm));
-  //  no need this code, because if I receive reply.term, then I must have sent for that term.
-  //   if (pMsg->term > ths->pRaftStore->currentTerm) {
-  //     syncNodeUpdateTerm(ths, pMsg->term);
-  //   }
-
-  if (pMsg->term > ths->pRaftStore->currentTerm) {
-    char logBuf[128] = {0};
-    snprintf(logBuf, sizeof(logBuf), "syncNodeOnRequestVoteReplyCb error term, receive:%" PRIu64 " current:%" PRIu64, pMsg->term,
-             ths->pRaftStore->currentTerm);
-    syncNodePrint2(logBuf, ths);
-    sError("%s", logBuf);
-    return ret;
-  }
-
-  ASSERT(pMsg->term == ths->pRaftStore->currentTerm);
-
-  // This tallies votes even when the current state is not Candidate,
-  // but they won't be looked at, so it doesn't matter.
-  if (ths->state == TAOS_SYNC_STATE_CANDIDATE) {
-    votesRespondAdd(ths->pVotesRespond, pMsg);
-    if (pMsg->voteGranted) {
-      // add vote
-      voteGrantedVote(ths->pVotesGranted, pMsg);
-
-      // maybe to leader
-      if (voteGrantedMajority(ths->pVotesGranted)) {
-        if (!ths->pVotesGranted->toLeader) {
-          syncNodeCandidate2Leader(ths);
-
-          // prevent to leader again!
-          ths->pVotesGranted->toLeader = true;
-        }
-      }
-    } else {
-      ;
-      // do nothing
-      // UNCHANGED <<votesGranted, voterLog>>
-    }
-  }
-
-  return ret;
-}
-#endif
-
 int32_t syncNodeOnRequestVoteReplySnapshotCb(SSyncNode* ths, SyncRequestVoteReply* pMsg) {
   int32_t ret = 0;