diff --git a/source/libs/sync/src/syncAppendEntries.c b/source/libs/sync/src/syncAppendEntries.c
index 51a0679889..f5f6679c5e 100644
--- a/source/libs/sync/src/syncAppendEntries.c
+++ b/source/libs/sync/src/syncAppendEntries.c
@@ -179,7 +179,7 @@ _SEND_RESPONSE:
   }
 
   // ack, i.e. send response
-  (void)syncNodeSendMsgById(&pReply->destId, ths, &rpcRsp);
+  TAOS_CHECK_RETURN(syncNodeSendMsgById(&pReply->destId, ths, &rpcRsp));
 
   // commit index, i.e. leader notice me
   if (ths->fsmState != SYNC_FSM_STATE_INCOMPLETE && syncLogBufferCommit(ths->pLogBuf, ths, ths->commitIndex) < 0) {
diff --git a/source/libs/sync/src/syncEnv.c b/source/libs/sync/src/syncEnv.c
index 1ebf47403a..dab9107332 100644
--- a/source/libs/sync/src/syncEnv.c
+++ b/source/libs/sync/src/syncEnv.c
@@ -87,7 +87,10 @@ int64_t syncNodeAdd(SSyncNode *pNode) {
 void syncNodeRemove(int64_t rid) {
   sDebug("sync node refId:%" PRId64 " is removed from rsetId:%d", rid, gNodeRefId);
   if (rid > 0) {
-    (void)taosRemoveRef(gNodeRefId, rid);
+    int32_t code = 0;
+    if ((code = taosRemoveRef(gNodeRefId, rid)) != 0)
+      sError("failed to remove sync node from refId:%" PRId64 ", rsetId:%d, since %s", rid, gNodeRefId,
+             tstrerror(code));
   }
 }
 
@@ -103,7 +106,10 @@ SSyncNode *syncNodeAcquire(int64_t rid) {
 
 void syncNodeRelease(SSyncNode *pNode) {
   if (pNode) {
-    (void)taosReleaseRef(gNodeRefId, pNode->rid);
+    int32_t code = 0;
+    if ((code = taosReleaseRef(gNodeRefId, pNode->rid)) != 0)
+      sError("failed to release sync node from refId:%" PRId64 ", rsetId:%d, since %s", pNode->rid, gNodeRefId,
+             tstrerror(code));
   }
 }
 
@@ -118,7 +124,9 @@ int64_t syncHbTimerDataAdd(SSyncHbTimerData *pData) {
 
 void syncHbTimerDataRemove(int64_t rid) {
   if (rid > 0) {
-    (void)taosRemoveRef(gHbDataRefId, rid);
+    int32_t code = 0;
+    if ((code = taosRemoveRef(gHbDataRefId, rid)) != 0)
+      sError("failed to remove hbdata from refId:%" PRId64 ", rsetId:%d, since %s", rid, gHbDataRefId, tstrerror(code));
   }
 }
 
@@ -134,6 +142,10 @@ SSyncHbTimerData *syncHbTimerDataAcquire(int64_t rid) {
 
 void syncHbTimerDataRelease(SSyncHbTimerData *pData) {
   if (pData) {
-    (void)taosReleaseRef(gHbDataRefId, pData->rid);
+    int32_t code = 0;
+    if ((code = taosReleaseRef(gHbDataRefId, pData->rid)) != 0) {
+      sError("failed to release hbdata from refId:%" PRId64 ", rsetId:%d, since %s", pData->rid, gHbDataRefId,
+             tstrerror(code));
+    }
   }
 }
diff --git a/source/libs/sync/src/syncMain.c b/source/libs/sync/src/syncMain.c
index e3b3f6b43d..b19d4df1d4 100644
--- a/source/libs/sync/src/syncMain.c
+++ b/source/libs/sync/src/syncMain.c
@@ -3644,7 +3644,9 @@ int32_t syncNodeOnClientRequest(SSyncNode* ths, SRpcMsg* pMsg, SyncIndex* pRetIn
 
       if (code > 0) {
         SRpcMsg rsp = {.code = pMsg->code, .info = pMsg->info};
-        (void)syncRespMgrGetAndDel(ths->pSyncRespMgr, pEntry->seqNum, &rsp.info);
+        int32_t num = syncRespMgrGetAndDel(ths->pSyncRespMgr, pEntry->seqNum, &rsp.info);
+        sDebug("vgId:%d, get response stub for config change, seqNum:%" PRIu64 ", num:%d", ths->vgId, pEntry->seqNum,
+               num);
         if (rsp.info.handle != NULL) {
           tmsgSendRsp(&rsp);
         }
diff --git a/source/libs/sync/src/syncPipeline.c b/source/libs/sync/src/syncPipeline.c
index d042bf8ade..347fd0cf00 100644
--- a/source/libs/sync/src/syncPipeline.c
+++ b/source/libs/sync/src/syncPipeline.c
@@ -450,14 +450,14 @@ int32_t syncLogBufferAccept(SSyncLogBuffer* pBuf, SSyncNode* pNode, SSyncRaftEnt
       goto _out;
     }
     if (pEntry->term != pExist->term) {
-      (void)syncLogBufferRollback(pBuf, pNode, index);
+      TAOS_CHECK_GOTO(syncLogBufferRollback(pBuf, pNode, index), NULL, _out);
     } else {
       sTrace("vgId:%d, duplicate log entry received. index:%" PRId64 ", term:%" PRId64 ". log buffer: [%" PRId64
              " %" PRId64 " %" PRId64 ", %" PRId64 ")",
              pNode->vgId, pEntry->index, pEntry->term, pBuf->startIndex, pBuf->commitIndex, pBuf->matchIndex,
              pBuf->endIndex);
       SyncTerm existPrevTerm = -1;
-      (void)syncLogReplGetPrevLogTerm(NULL, pNode, index, &existPrevTerm);
+      TAOS_CHECK_GOTO(syncLogReplGetPrevLogTerm(NULL, pNode, index, &existPrevTerm), NULL, _out);
       if (!(pEntry->term == pExist->term && (pEntry->index > pBuf->matchIndex || prevTerm == existPrevTerm))) {
         sError("vgId:%d, failed to accept, pEntry->term:%" PRId64 ", pExist->indexpExist->term:%" PRId64
                ", pEntry->index:%" PRId64 ", pBuf->matchIndex:%" PRId64 ", prevTerm:%" PRId64
@@ -650,7 +650,10 @@ int64_t syncLogBufferProceed(SSyncLogBuffer* pBuf, SSyncNode* pNode, SyncTerm* p
     }
 
     // replicate on demand
-    (void)syncNodeReplicateWithoutLock(pNode);
+    if ((code = syncNodeReplicateWithoutLock(pNode)) != 0) {
+      sError("vgId:%d, failed to replicate since %s. index:%" PRId64, pNode->vgId, tstrerror(code), pEntry->index);
+      goto _out;
+    }
 
     if (pEntry->index != pBuf->matchIndex) {
       sError("vgId:%d, failed to proceed, pEntry->index:%" PRId64 ", pBuf->matchIndex:%" PRId64, pNode->vgId,
@@ -721,7 +724,8 @@ int32_t syncFsmExecute(SSyncNode* pNode, SSyncFSM* pFsm, ESyncState role, SyncTe
     cbMeta.currentTerm = term;
     cbMeta.flag = -1;
 
-    (void)syncRespMgrGetAndDel(pNode->pSyncRespMgr, cbMeta.seqNum, &rpcMsg.info);
+    int32_t num = syncRespMgrGetAndDel(pNode->pSyncRespMgr, cbMeta.seqNum, &rpcMsg.info);
+    sDebug("vgId:%d, get response info,  seqNum:%" PRId64 ", num:%d", pNode->vgId, cbMeta.seqNum, num);
     code = pFsm->FpCommitCb(pFsm, &rpcMsg, &cbMeta);
     retry = (code != 0) && (terrno == TSDB_CODE_OUT_OF_RPC_MEMORY_QUEUE);
     if (retry) {
@@ -1033,7 +1037,7 @@ int32_t syncLogReplRecover(SSyncLogReplMgr* pMgr, SSyncNode* pNode, SyncAppendEn
     }
   } else {
     if (pMsg->lastSendIndex < pMgr->startIndex || pMsg->lastSendIndex >= pMgr->endIndex) {
-      (void)syncLogReplRetryOnNeed(pMgr, pNode);
+      TAOS_CHECK_RETURN(syncLogReplRetryOnNeed(pMgr, pNode));
       return 0;
     }
 
@@ -1108,7 +1112,7 @@ int32_t syncLogReplRecover(SSyncLogReplMgr* pMgr, SSyncNode* pNode, SyncAppendEn
   }
 
   // attempt to replicate the raft log at index
-  (void)syncLogReplReset(pMgr);
+  syncLogReplReset(pMgr);
   return syncLogReplProbe(pMgr, pNode, index);
 }
 
@@ -1136,9 +1140,9 @@ int32_t syncLogReplProcessReply(SSyncLogReplMgr* pMgr, SSyncNode* pNode, SyncApp
   }
 
   if (pMgr->restored) {
-    (void)syncLogReplContinue(pMgr, pNode, pMsg);
+    TAOS_CHECK_RETURN(syncLogReplContinue(pMgr, pNode, pMsg));
   } else {
-    (void)syncLogReplRecover(pMgr, pNode, pMsg);
+    TAOS_CHECK_RETURN(syncLogReplRecover(pMgr, pNode, pMsg));
   }
   (void)taosThreadMutexUnlock(&pBuf->mutex);
   return 0;
@@ -1146,9 +1150,9 @@ int32_t syncLogReplProcessReply(SSyncLogReplMgr* pMgr, SSyncNode* pNode, SyncApp
 
 int32_t syncLogReplStart(SSyncLogReplMgr* pMgr, SSyncNode* pNode) {
   if (pMgr->restored) {
-    (void)syncLogReplAttempt(pMgr, pNode);
+    TAOS_CHECK_RETURN(syncLogReplAttempt(pMgr, pNode));
   } else {
-    (void)syncLogReplProbe(pMgr, pNode, pNode->pLogBuf->matchIndex);
+    TAOS_CHECK_RETURN(syncLogReplProbe(pMgr, pNode, pNode->pLogBuf->matchIndex));
   }
   return 0;
 }
@@ -1164,7 +1168,7 @@ int32_t syncLogReplProbe(SSyncLogReplMgr* pMgr, SSyncNode* pNode, SyncIndex inde
       nowMs < pMgr->states[pMgr->startIndex % pMgr->size].timeMs + retryMaxWaitMs) {
     return 0;
   }
-  (void)syncLogReplReset(pMgr);
+  syncLogReplReset(pMgr);
 
   SRaftId* pDestId = &pNode->replicasId[pMgr->peerId];
   bool     barrier = false;
@@ -1237,7 +1241,7 @@ int32_t syncLogReplAttempt(SSyncLogReplMgr* pMgr, SSyncNode* pNode) {
     }
   }
 
-  (void)syncLogReplRetryOnNeed(pMgr, pNode);
+  TAOS_CHECK_RETURN(syncLogReplRetryOnNeed(pMgr, pNode));
 
   SSyncLogBuffer* pBuf = pNode->pLogBuf;
   sTrace("vgId:%d, replicated %d msgs to peer:%" PRIx64 ". indexes:%" PRId64 "..., terms: ...%" PRId64
@@ -1291,7 +1295,7 @@ void syncLogReplDestroy(SSyncLogReplMgr* pMgr) {
   if (pMgr == NULL) {
     return;
   }
-  (void)taosMemoryFree(pMgr);
+  taosMemoryFree(pMgr);
   return;
 }
 
@@ -1374,7 +1378,7 @@ void syncLogBufferDestroy(SSyncLogBuffer* pBuf) {
   syncLogBufferClear(pBuf);
   (void)taosThreadMutexDestroy(&pBuf->mutex);
   (void)taosThreadMutexAttrDestroy(&pBuf->attr);
-  (void)taosMemoryFree(pBuf);
+  taosMemoryFree(pBuf);
   return;
 }
 
@@ -1395,7 +1399,7 @@ int32_t syncLogBufferRollback(SSyncLogBuffer* pBuf, SSyncNode* pNode, SyncIndex
   while (index >= toIndex) {
     SSyncRaftEntry* pEntry = pBuf->entries[index % pBuf->size].pItem;
     if (pEntry != NULL) {
-      (void)syncEntryDestroy(pEntry);
+      syncEntryDestroy(pEntry);
       pEntry = NULL;
       (void)memset(&pBuf->entries[index % pBuf->size], 0, sizeof(pBuf->entries[0]));
     }
@@ -1435,7 +1439,7 @@ int32_t syncLogBufferReset(SSyncLogBuffer* pBuf, SSyncNode* pNode) {
   if (lastVer != pBuf->matchIndex) return TSDB_CODE_SYN_INTERNAL_ERROR;
   SyncIndex index = pBuf->endIndex - 1;
 
-  (void)syncLogBufferRollback(pBuf, pNode, pBuf->matchIndex + 1);
+  TAOS_CHECK_RETURN(syncLogBufferRollback(pBuf, pNode, pBuf->matchIndex + 1));
 
   sInfo("vgId:%d, reset sync log buffer. buffer: [%" PRId64 " %" PRId64 " %" PRId64 ", %" PRId64 ")", pNode->vgId,
         pBuf->startIndex, pBuf->commitIndex, pBuf->matchIndex, pBuf->endIndex);
@@ -1483,6 +1487,7 @@ int32_t syncLogReplSendTo(SSyncLogReplMgr* pMgr, SSyncNode* pNode, SyncIndex ind
   SyncTerm        prevLogTerm = -1;
   SSyncLogBuffer* pBuf = pNode->pLogBuf;
   int32_t         code = 0;
+  int32_t         lino = 0;
 
   code = syncLogBufferGetOneEntry(pBuf, pNode, index, &inBuf, &pEntry);
   if (pEntry == NULL) {
@@ -1492,7 +1497,7 @@ int32_t syncLogReplSendTo(SSyncLogReplMgr* pMgr, SSyncNode* pNode, SyncIndex ind
       if (pMgr) {
         sInfo("vgId:%d, reset sync log repl of peer:%" PRIx64 " since %s. index:%" PRId64, pNode->vgId, pDestId->addr,
               tstrerror(code), index);
-        (void)syncLogReplReset(pMgr);
+        syncLogReplReset(pMgr);
       }
     }
     goto _err;
@@ -1512,7 +1517,7 @@ int32_t syncLogReplSendTo(SSyncLogReplMgr* pMgr, SSyncNode* pNode, SyncIndex ind
     goto _err;
   }
 
-  (void)syncNodeSendAppendEntries(pNode, pDestId, &msgOut);
+  TAOS_CHECK_GOTO(syncNodeSendAppendEntries(pNode, pDestId, &msgOut), &lino, _err);
 
   sTrace("vgId:%d, replicate one msg index:%" PRId64 " term:%" PRId64 " prevterm:%" PRId64 " to dest: 0x%016" PRIx64,
          pNode->vgId, pEntry->index, pEntry->term, prevLogTerm, pDestId->addr);
diff --git a/source/libs/sync/src/syncReplication.c b/source/libs/sync/src/syncReplication.c
index 6233801a51..0cda5d1ea9 100644
--- a/source/libs/sync/src/syncReplication.c
+++ b/source/libs/sync/src/syncReplication.c
@@ -68,14 +68,16 @@ int32_t syncNodeReplicate(SSyncNode* pNode) {
 int32_t syncNodeReplicateWithoutLock(SSyncNode* pNode) {
   if ((pNode->state != TAOS_SYNC_STATE_LEADER && pNode->state != TAOS_SYNC_STATE_ASSIGNED_LEADER) ||
       pNode->raftCfg.cfg.totalReplicaNum == 1) {
-    TAOS_RETURN(TSDB_CODE_FAILED);
+    TAOS_RETURN(TSDB_CODE_SUCCESS);
   }
   for (int32_t i = 0; i < pNode->totalReplicaNum; i++) {
     if (syncUtilSameId(&pNode->replicasId[i], &pNode->myRaftId)) {
       continue;
     }
     SSyncLogReplMgr* pMgr = pNode->logReplMgrs[i];
-    (void)syncLogReplStart(pMgr, pNode);
+    if (syncLogReplStart(pMgr, pNode) != 0) {
+      sError("vgId:%d, failed to start log replication to dnode:%d", pNode->vgId, DID(&(pNode->replicasId[i])));
+    }
   }
 
   TAOS_RETURN(TSDB_CODE_SUCCESS);
@@ -84,7 +86,7 @@ int32_t syncNodeReplicateWithoutLock(SSyncNode* pNode) {
 int32_t syncNodeSendAppendEntries(SSyncNode* pSyncNode, const SRaftId* destRaftId, SRpcMsg* pRpcMsg) {
   SyncAppendEntries* pMsg = pRpcMsg->pCont;
   pMsg->destId = *destRaftId;
-  (void)syncNodeSendMsgById(destRaftId, pSyncNode, pRpcMsg);
+  TAOS_CHECK_RETURN(syncNodeSendMsgById(destRaftId, pSyncNode, pRpcMsg));
 
   TAOS_RETURN(TSDB_CODE_SUCCESS);
 }
@@ -116,7 +118,9 @@ int32_t syncNodeHeartbeatPeers(SSyncNode* pSyncNode) {
     STraceId* trace = &(rpcMsg.info.traceId);
     sGTrace("vgId:%d, send sync-heartbeat to dnode:%d", pSyncNode->vgId, DID(&(pSyncMsg->destId)));
     syncLogSendHeartbeat(pSyncNode, pSyncMsg, true, 0, 0);
-    (void)syncNodeSendHeartbeat(pSyncNode, &pSyncMsg->destId, &rpcMsg);
+    if (syncNodeSendHeartbeat(pSyncNode, &pSyncMsg->destId, &rpcMsg) != 0) {
+      sError("vgId:%d, failed to send sync-heartbeat to dnode:%d", pSyncNode->vgId, DID(&(pSyncMsg->destId)));
+    }
   }
 
   TAOS_RETURN(TSDB_CODE_SUCCESS);
diff --git a/source/libs/sync/src/syncRespMgr.c b/source/libs/sync/src/syncRespMgr.c
index 854d6bc314..46773af654 100644
--- a/source/libs/sync/src/syncRespMgr.c
+++ b/source/libs/sync/src/syncRespMgr.c
@@ -110,7 +110,9 @@ int32_t syncRespMgrGetAndDel(SSyncRespMgr *pObj, uint64_t seq, SRpcHandleInfo *p
     *pInfo = pStub->rpcMsg.info;
     sNTrace(pObj->data, "get-and-del message handle:%p, type:%s seq:%" PRIu64, pStub->rpcMsg.info.handle,
             TMSG_INFO(pStub->rpcMsg.msgType), seq);
-    (void)taosHashRemove(pObj->pRespHash, &seq, sizeof(uint64_t));
+    if (taosHashRemove(pObj->pRespHash, &seq, sizeof(uint64_t)) != 0) {
+      sError("failed to remove seq:%" PRIu64, seq);
+    }
 
     (void)taosThreadMutexUnlock(&pObj->mutex);
     return 1;  // get one object
@@ -165,7 +167,9 @@ static int32_t syncRespCleanByTTL(SSyncRespMgr *pObj, int64_t ttl, bool rsp) {
       SRpcMsg rpcMsg = {.info = pStub->rpcMsg.info, .code = TSDB_CODE_SYN_TIMEOUT};
       sInfo("vgId:%d, message handle:%p expired, type:%s ahandle:%p", pNode->vgId, rpcMsg.info.handle,
             TMSG_INFO(pStub->rpcMsg.msgType), rpcMsg.info.ahandle);
-      (void)rpcSendResponse(&rpcMsg);
+      if (rpcSendResponse(&rpcMsg) != 0) {
+        sError("vgId:%d, failed to send response, handle:%p", pNode->vgId, rpcMsg.info.handle);
+      }
     }
 
     pStub = taosHashIterate(pObj->pRespHash, pStub);
@@ -176,7 +180,9 @@ static int32_t syncRespCleanByTTL(SSyncRespMgr *pObj, int64_t ttl, bool rsp) {
 
   for (int32_t i = 0; i < arraySize; ++i) {
     uint64_t *pSeqNum = taosArrayGet(delIndexArray, i);
-    (void)taosHashRemove(pObj->pRespHash, pSeqNum, sizeof(uint64_t));
+    if (taosHashRemove(pObj->pRespHash, pSeqNum, sizeof(uint64_t)) != 0) {
+      sError("vgId:%d, failed to remove seq:%" PRIu64, pNode->vgId, *pSeqNum);
+    }
     sDebug("vgId:%d, resp manager clean by ttl, seq:%" PRId64, pNode->vgId, *pSeqNum);
   }
   taosArrayDestroy(delIndexArray);
@@ -191,7 +197,10 @@ void syncRespCleanRsp(SSyncRespMgr *pObj) {
   sTrace("vgId:%d, clean all resp", pNode->vgId);
 
   (void)taosThreadMutexLock(&pObj->mutex);
-  (void)syncRespCleanByTTL(pObj, -1, true);
+  int32_t code = 0;
+  if ((code = syncRespCleanByTTL(pObj, -1, true)) != 0) {
+    sError("vgId:%d, failed to clean all resp since %s", pNode->vgId, tstrerror(code));
+  }
   (void)taosThreadMutexUnlock(&pObj->mutex);
 }
 
@@ -200,6 +209,9 @@ void syncRespClean(SSyncRespMgr *pObj) {
   sTrace("vgId:%d, clean resp by ttl", pNode->vgId);
 
   (void)taosThreadMutexLock(&pObj->mutex);
-  (void)syncRespCleanByTTL(pObj, pObj->ttl, false);
+  int32_t code = 0;
+  if ((code = syncRespCleanByTTL(pObj, pObj->ttl, false)) != 0) {
+    sError("vgId:%d, failed to clean resp by ttl since %s", pNode->vgId, tstrerror(code));
+  }
   (void)taosThreadMutexUnlock(&pObj->mutex);
 }
diff --git a/source/libs/sync/src/syncSnapshot.c b/source/libs/sync/src/syncSnapshot.c
index 0b77ab78a6..48673b36fb 100644
--- a/source/libs/sync/src/syncSnapshot.c
+++ b/source/libs/sync/src/syncSnapshot.c
@@ -916,7 +916,9 @@ static int32_t syncSnapBufferRecv(SSyncSnapshotReceiver *pReceiver, SyncSnapshot
       }
     }
     pRcvBuf->start = seq + 1;
-    (void)syncSnapSendRsp(pReceiver, pRcvBuf->entries[seq % pRcvBuf->size], NULL, 0, 0, code);
+    if (syncSnapSendRsp(pReceiver, pRcvBuf->entries[seq % pRcvBuf->size], NULL, 0, 0, code) != 0) {
+      sError("failed to send snap rsp");
+    }
     pRcvBuf->entryDeleteCb(pRcvBuf->entries[seq % pRcvBuf->size]);
     pRcvBuf->entries[seq % pRcvBuf->size] = NULL;
     if (code) goto _out;
@@ -1011,7 +1013,7 @@ int32_t syncNodeOnSnapshot(SSyncNode *pSyncNode, SRpcMsg *pRpcMsg) {
     sRError(pReceiver, "reject snap replication with smaller term. msg term:%" PRId64 ", seq:%d", pMsg->term,
             pMsg->seq);
     code = TSDB_CODE_SYN_MISMATCHED_SIGNATURE;
-    (void)syncSnapSendRsp(pReceiver, pMsg, NULL, 0, 0, code);
+    if (syncSnapSendRsp(pReceiver, pMsg, NULL, 0, 0, code) != 0) sError("failed to send snap rsp");
     TAOS_RETURN(code);
   }
 
@@ -1298,13 +1300,13 @@ int32_t syncNodeOnSnapshotRsp(SSyncNode *pSyncNode, SRpcMsg *pRpcMsg) {
   if (pMsg->ack == SYNC_SNAPSHOT_SEQ_END) {
     sSInfo(pSender, "process end rsp");
     snapshotSenderStop(pSender, true);
-    (void)syncNodeReplicateReset(pSyncNode, &pMsg->srcId);
+    TAOS_CHECK_GOTO(syncNodeReplicateReset(pSyncNode, &pMsg->srcId), NULL, _ERROR);
   }
 
   return 0;
 
 _ERROR:
   snapshotSenderStop(pSender, false);
-  (void)syncNodeReplicateReset(pSyncNode, &pMsg->srcId);
+  if (syncNodeReplicateReset(pSyncNode, &pMsg->srcId) != 0) sError("failed to reset replicate");
   TAOS_RETURN(code);
 }
diff --git a/source/libs/sync/src/syncTimeout.c b/source/libs/sync/src/syncTimeout.c
index b2233ae664..c073c2c1bb 100644
--- a/source/libs/sync/src/syncTimeout.c
+++ b/source/libs/sync/src/syncTimeout.c
@@ -65,7 +65,7 @@ static int32_t syncNodeTimerRoutine(SSyncNode* ths) {
   }
 
   // timer replicate
-  (void)syncNodeReplicate(ths);
+  TAOS_CHECK_RETURN(syncNodeReplicate(ths));
 
   // clean mnode index
   if (syncNodeIsMnode(ths)) {
@@ -89,7 +89,7 @@ static int32_t syncNodeTimerRoutine(SSyncNode* ths) {
           snapshotSenderStop(pSender, false);
         } else {
           sSWarn(pSender, "snap replication resend.");
-          (void)snapshotReSend(pSender);
+          TAOS_CHECK_RETURN(snapshotReSend(pSender));
         }
       }
     }
@@ -112,14 +112,14 @@ int32_t syncNodeOnTimeout(SSyncNode* ths, const SRpcMsg* pRpc) {
     if (atomic_load_64(&ths->pingTimerLogicClockUser) <= pMsg->logicClock) {
       ++(ths->pingTimerCounter);
 
-      (void)syncNodeTimerRoutine(ths);
+      TAOS_CHECK_RETURN(syncNodeTimerRoutine(ths));
     }
 
   } else if (pMsg->timeoutType == SYNC_TIMEOUT_ELECTION) {
     if (atomic_load_64(&ths->electTimerLogicClock) <= pMsg->logicClock) {
       ++(ths->electTimerCounter);
 
-      (void)syncNodeElect(ths);
+      TAOS_CHECK_RETURN(syncNodeElect(ths));
     }
 
   } else if (pMsg->timeoutType == SYNC_TIMEOUT_HEARTBEAT) {
diff --git a/source/libs/sync/test/syncRespMgrTest.cpp b/source/libs/sync/test/syncRespMgrTest.cpp
index 714f42a836..a9887243de 100644
--- a/source/libs/sync/test/syncRespMgrTest.cpp
+++ b/source/libs/sync/test/syncRespMgrTest.cpp
@@ -77,7 +77,7 @@ SSyncNode *createSyncNode() {
 
 void test1() {
   printf("------- test1 ---------\n");
-  (void)syncRespMgrCreate(createSyncNode(), 0, &pMgr);
+  assert(syncRespMgrCreate(createSyncNode(), 0, &pMgr) == 0);
   assert(pMgr != NULL);
 
   syncRespMgrInsert(10);
@@ -102,7 +102,7 @@ void test1() {
 
 void test2() {
   printf("------- test2 ---------\n");
-  (void)syncRespMgrCreate(createSyncNode(), 0, &pMgr);
+  assert(syncRespMgrCreate(createSyncNode(), 0, &pMgr) == 0);
   assert(pMgr != NULL);
 
   syncRespMgrInsert(10);
@@ -119,7 +119,7 @@ void test2() {
 
 void test3() {
   printf("------- test3 ---------\n");
-  (void)syncRespMgrCreate(createSyncNode(), 0, &pMgr);
+  assert(syncRespMgrCreate(createSyncNode(), 0, &pMgr) == 0);
   assert(pMgr != NULL);
 
   syncRespMgrInsert(10);
@@ -136,7 +136,7 @@ void test3() {
 
 void test4() {
   printf("------- test4 ---------\n");
-  (void)syncRespMgrCreate(createSyncNode(), 2, &pMgr);
+  assert(syncRespMgrCreate(createSyncNode(), 2, &pMgr) == 0);
   assert(pMgr != NULL);
 
   syncRespMgrInsert(5);
diff --git a/source/libs/sync/test/syncSnapshotSenderTest.cpp b/source/libs/sync/test/syncSnapshotSenderTest.cpp
index be31df30e9..e415a5761b 100644
--- a/source/libs/sync/test/syncSnapshotSenderTest.cpp
+++ b/source/libs/sync/test/syncSnapshotSenderTest.cpp
@@ -40,7 +40,7 @@ SSyncSnapshotSender* createSender() {
 #endif
 
   SSyncSnapshotSender* pSender = NULL;
-  (void)snapshotSenderCreate(pSyncNode, 2, &pSender);
+  assert(snapshotSenderCreate(pSyncNode, 2, &pSender) == 0);
   pSender->start = true;
   pSender->seq = 10;
   pSender->ack = 20;