diff --git a/source/libs/sync/inc/syncAppendEntriesReply.h b/source/libs/sync/inc/syncAppendEntriesReply.h
index 09750864d5..199a895961 100644
--- a/source/libs/sync/inc/syncAppendEntriesReply.h
+++ b/source/libs/sync/inc/syncAppendEntriesReply.h
@@ -35,7 +35,7 @@ extern "C" {
 //    /\ Discard(m)
 //    /\ UNCHANGED <<serverVars, candidateVars, logVars, elections>>
 //
-int32_t syncNodeOnAppendEntriesReply(SSyncNode* ths, SyncAppendEntriesReply* pMsg);
+int32_t syncNodeOnAppendEntriesReply(SSyncNode* ths, const SRpcMsg* pMsg);
 
 #ifdef __cplusplus
 }
diff --git a/source/libs/sync/inc/syncMessage.h b/source/libs/sync/inc/syncMessage.h
index 419f9591b3..870f36cf73 100644
--- a/source/libs/sync/inc/syncMessage.h
+++ b/source/libs/sync/inc/syncMessage.h
@@ -112,24 +112,6 @@ typedef struct SyncAppendEntriesReply {
   int64_t   startTime;
 } SyncAppendEntriesReply;
 
-SyncAppendEntriesReply* syncAppendEntriesReplyBuild(int32_t vgId);
-void                    syncAppendEntriesReplyDestroy(SyncAppendEntriesReply* pMsg);
-void                    syncAppendEntriesReplySerialize(const SyncAppendEntriesReply* pMsg, char* buf, uint32_t bufLen);
-void                    syncAppendEntriesReplyDeserialize(const char* buf, uint32_t len, SyncAppendEntriesReply* pMsg);
-char*                   syncAppendEntriesReplySerialize2(const SyncAppendEntriesReply* pMsg, uint32_t* len);
-SyncAppendEntriesReply* syncAppendEntriesReplyDeserialize2(const char* buf, uint32_t len);
-void                    syncAppendEntriesReply2RpcMsg(const SyncAppendEntriesReply* pMsg, SRpcMsg* pRpcMsg);
-void                    syncAppendEntriesReplyFromRpcMsg(const SRpcMsg* pRpcMsg, SyncAppendEntriesReply* pMsg);
-SyncAppendEntriesReply* syncAppendEntriesReplyFromRpcMsg2(const SRpcMsg* pRpcMsg);
-cJSON*                  syncAppendEntriesReply2Json(const SyncAppendEntriesReply* pMsg);
-char*                   syncAppendEntriesReply2Str(const SyncAppendEntriesReply* pMsg);
-
-// for debug ----------------------
-void syncAppendEntriesReplyPrint(const SyncAppendEntriesReply* pMsg);
-void syncAppendEntriesReplyPrint2(char* s, const SyncAppendEntriesReply* pMsg);
-void syncAppendEntriesReplyLog(const SyncAppendEntriesReply* pMsg);
-void syncAppendEntriesReplyLog2(char* s, const SyncAppendEntriesReply* pMsg);
-
 // ---------------------------------------------
 typedef struct SyncHeartbeat {
   uint32_t bytes;
@@ -430,7 +412,7 @@ void syncLocalCmdLog2(char* s, const SyncLocalCmd* pMsg);
 int32_t syncNodeOnRequestVote(SSyncNode* pNode, const SRpcMsg* pMsg);
 int32_t syncNodeOnRequestVoteReply(SSyncNode* pNode, const SRpcMsg* pMsg);
 int32_t syncNodeOnAppendEntries(SSyncNode* pNode, const SRpcMsg* pMsg);
-int32_t syncNodeOnAppendEntriesReply(SSyncNode* ths, SyncAppendEntriesReply* pMsg);
+int32_t syncNodeOnAppendEntriesReply(SSyncNode* ths, const SRpcMsg* pMsg);
 
 int32_t syncNodeOnPreSnapshot(SSyncNode* ths, SyncPreSnapshot* pMsg);
 int32_t syncNodeOnPreSnapshotReply(SSyncNode* ths, SyncPreSnapshotReply* pMsg);
@@ -460,6 +442,7 @@ int32_t syncClientRequestBuildFromNoopEntry(SRpcMsg* pClientRequestRpcMsg, const
 int32_t syncBuildRequestVote(SRpcMsg* pMsg, int32_t vgId);
 int32_t syncBuildRequestVoteReply(SRpcMsg* pMsg, int32_t vgId);
 int32_t syncBuildAppendEntries(SRpcMsg* pMsg, int32_t dataLen, int32_t vgId);
+int32_t syncBuildAppendEntriesReply(SRpcMsg* pMsg, int32_t vgId);
 
 #ifdef __cplusplus
 }
diff --git a/source/libs/sync/src/syncAppendEntries.c b/source/libs/sync/src/syncAppendEntries.c
index 91c8d183e3..b80f22ce0c 100644
--- a/source/libs/sync/src/syncAppendEntries.c
+++ b/source/libs/sync/src/syncAppendEntries.c
@@ -138,6 +138,7 @@ void syncLogRecvAppendEntries(SSyncNode* pSyncNode, const SyncAppendEntries* pMs
 
 int32_t syncNodeOnAppendEntries(SSyncNode* ths, const SRpcMsg* pRpcMsg) {
   SyncAppendEntries* pMsg = pRpcMsg->pCont;
+  SRpcMsg            rpcRsp = {0};
 
   // if already drop replica, do not process
   if (!syncNodeInRaftGroup(ths, &(pMsg->srcId))) {
@@ -146,7 +147,13 @@ int32_t syncNodeOnAppendEntries(SSyncNode* ths, const SRpcMsg* pRpcMsg) {
   }
 
   // prepare response msg
-  SyncAppendEntriesReply* pReply = syncAppendEntriesReplyBuild(ths->vgId);
+  int32_t code = syncBuildRequestVoteReply(&rpcRsp, ths->vgId);
+  if (code != 0) {
+    syncLogRecvAppendEntries(ths, pMsg, "build rsp error");
+    goto _IGNORE;
+  }
+
+  SyncAppendEntriesReply* pReply = rpcRsp.pCont;
   pReply->srcId = ths->myRaftId;
   pReply->destId = pMsg->srcId;
   pReply->term = ths->pRaftStore->currentTerm;
@@ -288,7 +295,7 @@ int32_t syncNodeOnAppendEntries(SSyncNode* ths, const SRpcMsg* pRpcMsg) {
   goto _SEND_RESPONSE;
 
 _IGNORE:
-  syncAppendEntriesReplyDestroy(pReply);
+  rpcFreeCont(rpcRsp.pCont);
   return 0;
 
 _SEND_RESPONSE:
@@ -296,10 +303,6 @@ _SEND_RESPONSE:
   syncLogSendAppendEntriesReply(ths, pReply, "");
 
   // send response
-  SRpcMsg rpcMsg;
-  syncAppendEntriesReply2RpcMsg(pReply, &rpcMsg);
-  syncNodeSendMsgById(&pReply->destId, ths, &rpcMsg);
-  syncAppendEntriesReplyDestroy(pReply);
-
+  syncNodeSendMsgById(&pReply->destId, ths, &rpcRsp);
   return 0;
 }
\ No newline at end of file
diff --git a/source/libs/sync/src/syncAppendEntriesReply.c b/source/libs/sync/src/syncAppendEntriesReply.c
index 53d6b5d92f..a6a9389ca6 100644
--- a/source/libs/sync/src/syncAppendEntriesReply.c
+++ b/source/libs/sync/src/syncAppendEntriesReply.c
@@ -73,8 +73,9 @@ static void syncNodeStartSnapshotOnce(SSyncNode* ths, SyncIndex beginIndex, Sync
 #endif
 }
 
-int32_t syncNodeOnAppendEntriesReply(SSyncNode* ths, SyncAppendEntriesReply* pMsg) {
-  int32_t ret = 0;
+int32_t syncNodeOnAppendEntriesReply(SSyncNode* ths, const SRpcMsg* pRpcMsg) {
+  int32_t                 ret = 0;
+  SyncAppendEntriesReply* pMsg = pRpcMsg->pCont;
 
   // if already drop replica, do not process
   if (!syncNodeInRaftGroup(ths, &(pMsg->srcId))) {
diff --git a/source/libs/sync/src/syncMain.c b/source/libs/sync/src/syncMain.c
index 67b1fed491..401f6d217b 100644
--- a/source/libs/sync/src/syncMain.c
+++ b/source/libs/sync/src/syncMain.c
@@ -152,9 +152,7 @@ int32_t syncProcessMsg(int64_t rid, SRpcMsg* pMsg) {
   } else if (pMsg->msgType == TDMT_SYNC_APPEND_ENTRIES) {
     syncNodeOnAppendEntries(pSyncNode, pMsg);
   } else if (pMsg->msgType == TDMT_SYNC_APPEND_ENTRIES_REPLY) {
-    SyncAppendEntriesReply* pSyncMsg = syncAppendEntriesReplyFromRpcMsg2(pMsg);
-    code = syncNodeOnAppendEntriesReply(pSyncNode, pSyncMsg);
-    syncAppendEntriesReplyDestroy(pSyncMsg);
+    syncNodeOnAppendEntriesReply(pSyncNode, pMsg);
   } else if (pMsg->msgType == TDMT_SYNC_SNAPSHOT_SEND) {
     SyncSnapshotSend* pSyncMsg = syncSnapshotSendFromRpcMsg2(pMsg);
     code = syncNodeOnSnapshot(pSyncNode, pSyncMsg);
diff --git a/source/libs/sync/src/syncMessage.c b/source/libs/sync/src/syncMessage.c
index 826549998e..fd01d79612 100644
--- a/source/libs/sync/src/syncMessage.c
+++ b/source/libs/sync/src/syncMessage.c
@@ -93,7 +93,7 @@ int32_t syncBuildRequestVote(SRpcMsg* pMsg, int32_t vgId) {
   pMsg->msgType = TDMT_SYNC_REQUEST_VOTE;
   pMsg->contLen = bytes;
   if (pMsg->pCont == NULL) {
-    terrno = TDMT_SYNC_REQUEST_VOTE;
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
     return -1;
   }
 
@@ -110,7 +110,7 @@ int32_t syncBuildRequestVoteReply(SRpcMsg* pMsg, int32_t vgId) {
   pMsg->msgType = TDMT_SYNC_REQUEST_VOTE_REPLY;
   pMsg->contLen = bytes;
   if (pMsg->pCont == NULL) {
-    terrno = TDMT_SYNC_REQUEST_VOTE;
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
     return -1;
   }
 
@@ -139,160 +139,21 @@ int32_t syncBuildAppendEntries(SRpcMsg* pMsg, int32_t dataLen, int32_t vgId) {
   return 0;
 }
 
-// ---- message process SyncAppendEntriesReply----
-SyncAppendEntriesReply* syncAppendEntriesReplyBuild(int32_t vgId) {
-  uint32_t                bytes = sizeof(SyncAppendEntriesReply);
-  SyncAppendEntriesReply* pMsg = taosMemoryMalloc(bytes);
-  memset(pMsg, 0, bytes);
-  pMsg->bytes = bytes;
-  pMsg->vgId = vgId;
+int32_t syncBuildAppendEntriesReply(SRpcMsg* pMsg, int32_t vgId) {
+  int32_t bytes = sizeof(SyncRequestVoteReply);
+  pMsg->pCont = rpcMallocCont(bytes);
   pMsg->msgType = TDMT_SYNC_APPEND_ENTRIES_REPLY;
-  return pMsg;
-}
-
-void syncAppendEntriesReplyDestroy(SyncAppendEntriesReply* pMsg) {
-  if (pMsg != NULL) {
-    taosMemoryFree(pMsg);
-  }
-}
-
-void syncAppendEntriesReplySerialize(const SyncAppendEntriesReply* pMsg, char* buf, uint32_t bufLen) {
-  ASSERT(pMsg->bytes <= bufLen);
-  memcpy(buf, pMsg, pMsg->bytes);
-}
-
-void syncAppendEntriesReplyDeserialize(const char* buf, uint32_t len, SyncAppendEntriesReply* pMsg) {
-  memcpy(pMsg, buf, len);
-  ASSERT(len == pMsg->bytes);
-}
-
-char* syncAppendEntriesReplySerialize2(const SyncAppendEntriesReply* pMsg, uint32_t* len) {
-  char* buf = taosMemoryMalloc(pMsg->bytes);
-  ASSERT(buf != NULL);
-  syncAppendEntriesReplySerialize(pMsg, buf, pMsg->bytes);
-  if (len != NULL) {
-    *len = pMsg->bytes;
-  }
-  return buf;
-}
-
-SyncAppendEntriesReply* syncAppendEntriesReplyDeserialize2(const char* buf, uint32_t len) {
-  uint32_t                bytes = *((uint32_t*)buf);
-  SyncAppendEntriesReply* pMsg = taosMemoryMalloc(bytes);
-  ASSERT(pMsg != NULL);
-  syncAppendEntriesReplyDeserialize(buf, len, pMsg);
-  ASSERT(len == pMsg->bytes);
-  return pMsg;
-}
-
-void syncAppendEntriesReply2RpcMsg(const SyncAppendEntriesReply* pMsg, SRpcMsg* pRpcMsg) {
-  memset(pRpcMsg, 0, sizeof(*pRpcMsg));
-  pRpcMsg->msgType = pMsg->msgType;
-  pRpcMsg->contLen = pMsg->bytes;
-  pRpcMsg->pCont = rpcMallocCont(pRpcMsg->contLen);
-  syncAppendEntriesReplySerialize(pMsg, pRpcMsg->pCont, pRpcMsg->contLen);
-}
-
-void syncAppendEntriesReplyFromRpcMsg(const SRpcMsg* pRpcMsg, SyncAppendEntriesReply* pMsg) {
-  syncAppendEntriesReplyDeserialize(pRpcMsg->pCont, pRpcMsg->contLen, pMsg);
-}
-
-SyncAppendEntriesReply* syncAppendEntriesReplyFromRpcMsg2(const SRpcMsg* pRpcMsg) {
-  SyncAppendEntriesReply* pMsg = syncAppendEntriesReplyDeserialize2(pRpcMsg->pCont, pRpcMsg->contLen);
-  ASSERT(pMsg != NULL);
-  return pMsg;
-}
-
-cJSON* syncAppendEntriesReply2Json(const SyncAppendEntriesReply* pMsg) {
-  char   u64buf[128] = {0};
-  cJSON* pRoot = cJSON_CreateObject();
-
-  if (pMsg != NULL) {
-    cJSON_AddNumberToObject(pRoot, "bytes", pMsg->bytes);
-    cJSON_AddNumberToObject(pRoot, "vgId", pMsg->vgId);
-    cJSON_AddNumberToObject(pRoot, "msgType", pMsg->msgType);
-
-    cJSON* pSrcId = cJSON_CreateObject();
-    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->srcId.addr);
-    cJSON_AddStringToObject(pSrcId, "addr", u64buf);
-    {
-      uint64_t u64 = pMsg->srcId.addr;
-      cJSON*   pTmp = pSrcId;
-      char     host[128] = {0};
-      uint16_t port;
-      syncUtilU642Addr(u64, host, sizeof(host), &port);
-      cJSON_AddStringToObject(pTmp, "addr_host", host);
-      cJSON_AddNumberToObject(pTmp, "addr_port", port);
-    }
-    cJSON_AddNumberToObject(pSrcId, "vgId", pMsg->srcId.vgId);
-    cJSON_AddItemToObject(pRoot, "srcId", pSrcId);
-
-    cJSON* pDestId = cJSON_CreateObject();
-    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->destId.addr);
-    cJSON_AddStringToObject(pDestId, "addr", u64buf);
-    {
-      uint64_t u64 = pMsg->destId.addr;
-      cJSON*   pTmp = pDestId;
-      char     host[128] = {0};
-      uint16_t port;
-      syncUtilU642Addr(u64, host, sizeof(host), &port);
-      cJSON_AddStringToObject(pTmp, "addr_host", host);
-      cJSON_AddNumberToObject(pTmp, "addr_port", port);
-    }
-    cJSON_AddNumberToObject(pDestId, "vgId", pMsg->destId.vgId);
-    cJSON_AddItemToObject(pRoot, "destId", pDestId);
-
-    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->privateTerm);
-    cJSON_AddStringToObject(pRoot, "privateTerm", u64buf);
-
-    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->term);
-    cJSON_AddStringToObject(pRoot, "term", u64buf);
-    cJSON_AddNumberToObject(pRoot, "success", pMsg->success);
-    snprintf(u64buf, sizeof(u64buf), "%" PRId64, pMsg->matchIndex);
-    cJSON_AddStringToObject(pRoot, "matchIndex", u64buf);
-    snprintf(u64buf, sizeof(u64buf), "%" PRId64, pMsg->startTime);
-    cJSON_AddStringToObject(pRoot, "startTime", u64buf);
+  pMsg->contLen = bytes;
+  if (pMsg->pCont == NULL) {
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
+    return -1;
   }
 
-  cJSON* pJson = cJSON_CreateObject();
-  cJSON_AddItemToObject(pJson, "SyncAppendEntriesReply", pRoot);
-  return pJson;
-}
-
-char* syncAppendEntriesReply2Str(const SyncAppendEntriesReply* pMsg) {
-  cJSON* pJson = syncAppendEntriesReply2Json(pMsg);
-  char*  serialized = cJSON_Print(pJson);
-  cJSON_Delete(pJson);
-  return serialized;
-}
-
-// for debug ----------------------
-void syncAppendEntriesReplyPrint(const SyncAppendEntriesReply* pMsg) {
-  char* serialized = syncAppendEntriesReply2Str(pMsg);
-  printf("syncAppendEntriesReplyPrint | len:%d | %s \n", (int32_t)strlen(serialized), serialized);
-  fflush(NULL);
-  taosMemoryFree(serialized);
-}
-
-void syncAppendEntriesReplyPrint2(char* s, const SyncAppendEntriesReply* pMsg) {
-  char* serialized = syncAppendEntriesReply2Str(pMsg);
-  printf("syncAppendEntriesReplyPrint2 | len:%d | %s | %s \n", (int32_t)strlen(serialized), s, serialized);
-  fflush(NULL);
-  taosMemoryFree(serialized);
-}
-
-void syncAppendEntriesReplyLog(const SyncAppendEntriesReply* pMsg) {
-  char* serialized = syncAppendEntriesReply2Str(pMsg);
-  sTrace("syncAppendEntriesReplyLog | len:%d| %s", (int32_t)strlen(serialized), serialized);
-  taosMemoryFree(serialized);
-}
-
-void syncAppendEntriesReplyLog2(char* s, const SyncAppendEntriesReply* pMsg) {
-  if (gRaftDetailLog) {
-    char* serialized = syncAppendEntriesReply2Str(pMsg);
-    sTrace("syncAppendEntriesReplyLog2 | len:%d | %s | %s", (int32_t)strlen(serialized), s, serialized);
-    taosMemoryFree(serialized);
-  }
+  SyncAppendEntriesReply* pAppendEntriesReply = pMsg->pCont;
+  pAppendEntriesReply->bytes = bytes;
+  pAppendEntriesReply->msgType = TDMT_SYNC_APPEND_ENTRIES_REPLY;
+  pAppendEntriesReply->vgId = vgId;
+  return 0;
 }
 
 // ---- message process SyncHeartbeat----
diff --git a/source/libs/sync/test/sync_test_lib/inc/syncTest.h b/source/libs/sync/test/sync_test_lib/inc/syncTest.h
index ef3e4c3af9..8b5a38224b 100644
--- a/source/libs/sync/test/sync_test_lib/inc/syncTest.h
+++ b/source/libs/sync/test/sync_test_lib/inc/syncTest.h
@@ -295,6 +295,24 @@ void syncAppendEntriesPrint2(char* s, const SyncAppendEntries* pMsg);
 void syncAppendEntriesLog(const SyncAppendEntries* pMsg);
 void syncAppendEntriesLog2(char* s, const SyncAppendEntries* pMsg);
 
+SyncAppendEntriesReply* syncAppendEntriesReplyBuild(int32_t vgId);
+void                    syncAppendEntriesReplyDestroy(SyncAppendEntriesReply* pMsg);
+void                    syncAppendEntriesReplySerialize(const SyncAppendEntriesReply* pMsg, char* buf, uint32_t bufLen);
+void                    syncAppendEntriesReplyDeserialize(const char* buf, uint32_t len, SyncAppendEntriesReply* pMsg);
+char*                   syncAppendEntriesReplySerialize2(const SyncAppendEntriesReply* pMsg, uint32_t* len);
+SyncAppendEntriesReply* syncAppendEntriesReplyDeserialize2(const char* buf, uint32_t len);
+void                    syncAppendEntriesReply2RpcMsg(const SyncAppendEntriesReply* pMsg, SRpcMsg* pRpcMsg);
+void                    syncAppendEntriesReplyFromRpcMsg(const SRpcMsg* pRpcMsg, SyncAppendEntriesReply* pMsg);
+SyncAppendEntriesReply* syncAppendEntriesReplyFromRpcMsg2(const SRpcMsg* pRpcMsg);
+cJSON*                  syncAppendEntriesReply2Json(const SyncAppendEntriesReply* pMsg);
+char*                   syncAppendEntriesReply2Str(const SyncAppendEntriesReply* pMsg);
+
+// for debug ----------------------
+void syncAppendEntriesReplyPrint(const SyncAppendEntriesReply* pMsg);
+void syncAppendEntriesReplyPrint2(char* s, const SyncAppendEntriesReply* pMsg);
+void syncAppendEntriesReplyLog(const SyncAppendEntriesReply* pMsg);
+void syncAppendEntriesReplyLog2(char* s, const SyncAppendEntriesReply* pMsg);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/source/libs/sync/test/sync_test_lib/src/syncMessageDebug.c b/source/libs/sync/test/sync_test_lib/src/syncMessageDebug.c
index a5a30f0273..d4a3cc1872 100644
--- a/source/libs/sync/test/sync_test_lib/src/syncMessageDebug.c
+++ b/source/libs/sync/test/sync_test_lib/src/syncMessageDebug.c
@@ -1479,3 +1479,159 @@ void syncAppendEntriesLog2(char* s, const SyncAppendEntries* pMsg) {
     taosMemoryFree(serialized);
   }
 }
+
+// ---- message process SyncAppendEntriesReply----
+SyncAppendEntriesReply* syncAppendEntriesReplyBuild(int32_t vgId) {
+  uint32_t                bytes = sizeof(SyncAppendEntriesReply);
+  SyncAppendEntriesReply* pMsg = taosMemoryMalloc(bytes);
+  memset(pMsg, 0, bytes);
+  pMsg->bytes = bytes;
+  pMsg->vgId = vgId;
+  pMsg->msgType = TDMT_SYNC_APPEND_ENTRIES_REPLY;
+  return pMsg;
+}
+
+void syncAppendEntriesReplyDestroy(SyncAppendEntriesReply* pMsg) {
+  if (pMsg != NULL) {
+    taosMemoryFree(pMsg);
+  }
+}
+
+void syncAppendEntriesReplySerialize(const SyncAppendEntriesReply* pMsg, char* buf, uint32_t bufLen) {
+  ASSERT(pMsg->bytes <= bufLen);
+  memcpy(buf, pMsg, pMsg->bytes);
+}
+
+void syncAppendEntriesReplyDeserialize(const char* buf, uint32_t len, SyncAppendEntriesReply* pMsg) {
+  memcpy(pMsg, buf, len);
+  ASSERT(len == pMsg->bytes);
+}
+
+char* syncAppendEntriesReplySerialize2(const SyncAppendEntriesReply* pMsg, uint32_t* len) {
+  char* buf = taosMemoryMalloc(pMsg->bytes);
+  ASSERT(buf != NULL);
+  syncAppendEntriesReplySerialize(pMsg, buf, pMsg->bytes);
+  if (len != NULL) {
+    *len = pMsg->bytes;
+  }
+  return buf;
+}
+
+SyncAppendEntriesReply* syncAppendEntriesReplyDeserialize2(const char* buf, uint32_t len) {
+  uint32_t                bytes = *((uint32_t*)buf);
+  SyncAppendEntriesReply* pMsg = taosMemoryMalloc(bytes);
+  ASSERT(pMsg != NULL);
+  syncAppendEntriesReplyDeserialize(buf, len, pMsg);
+  ASSERT(len == pMsg->bytes);
+  return pMsg;
+}
+
+void syncAppendEntriesReply2RpcMsg(const SyncAppendEntriesReply* pMsg, SRpcMsg* pRpcMsg) {
+  memset(pRpcMsg, 0, sizeof(*pRpcMsg));
+  pRpcMsg->msgType = pMsg->msgType;
+  pRpcMsg->contLen = pMsg->bytes;
+  pRpcMsg->pCont = rpcMallocCont(pRpcMsg->contLen);
+  syncAppendEntriesReplySerialize(pMsg, pRpcMsg->pCont, pRpcMsg->contLen);
+}
+
+void syncAppendEntriesReplyFromRpcMsg(const SRpcMsg* pRpcMsg, SyncAppendEntriesReply* pMsg) {
+  syncAppendEntriesReplyDeserialize(pRpcMsg->pCont, pRpcMsg->contLen, pMsg);
+}
+
+SyncAppendEntriesReply* syncAppendEntriesReplyFromRpcMsg2(const SRpcMsg* pRpcMsg) {
+  SyncAppendEntriesReply* pMsg = syncAppendEntriesReplyDeserialize2(pRpcMsg->pCont, pRpcMsg->contLen);
+  ASSERT(pMsg != NULL);
+  return pMsg;
+}
+
+cJSON* syncAppendEntriesReply2Json(const SyncAppendEntriesReply* pMsg) {
+  char   u64buf[128] = {0};
+  cJSON* pRoot = cJSON_CreateObject();
+
+  if (pMsg != NULL) {
+    cJSON_AddNumberToObject(pRoot, "bytes", pMsg->bytes);
+    cJSON_AddNumberToObject(pRoot, "vgId", pMsg->vgId);
+    cJSON_AddNumberToObject(pRoot, "msgType", pMsg->msgType);
+
+    cJSON* pSrcId = cJSON_CreateObject();
+    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->srcId.addr);
+    cJSON_AddStringToObject(pSrcId, "addr", u64buf);
+    {
+      uint64_t u64 = pMsg->srcId.addr;
+      cJSON*   pTmp = pSrcId;
+      char     host[128] = {0};
+      uint16_t port;
+      syncUtilU642Addr(u64, host, sizeof(host), &port);
+      cJSON_AddStringToObject(pTmp, "addr_host", host);
+      cJSON_AddNumberToObject(pTmp, "addr_port", port);
+    }
+    cJSON_AddNumberToObject(pSrcId, "vgId", pMsg->srcId.vgId);
+    cJSON_AddItemToObject(pRoot, "srcId", pSrcId);
+
+    cJSON* pDestId = cJSON_CreateObject();
+    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->destId.addr);
+    cJSON_AddStringToObject(pDestId, "addr", u64buf);
+    {
+      uint64_t u64 = pMsg->destId.addr;
+      cJSON*   pTmp = pDestId;
+      char     host[128] = {0};
+      uint16_t port;
+      syncUtilU642Addr(u64, host, sizeof(host), &port);
+      cJSON_AddStringToObject(pTmp, "addr_host", host);
+      cJSON_AddNumberToObject(pTmp, "addr_port", port);
+    }
+    cJSON_AddNumberToObject(pDestId, "vgId", pMsg->destId.vgId);
+    cJSON_AddItemToObject(pRoot, "destId", pDestId);
+
+    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->privateTerm);
+    cJSON_AddStringToObject(pRoot, "privateTerm", u64buf);
+
+    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->term);
+    cJSON_AddStringToObject(pRoot, "term", u64buf);
+    cJSON_AddNumberToObject(pRoot, "success", pMsg->success);
+    snprintf(u64buf, sizeof(u64buf), "%" PRId64, pMsg->matchIndex);
+    cJSON_AddStringToObject(pRoot, "matchIndex", u64buf);
+    snprintf(u64buf, sizeof(u64buf), "%" PRId64, pMsg->startTime);
+    cJSON_AddStringToObject(pRoot, "startTime", u64buf);
+  }
+
+  cJSON* pJson = cJSON_CreateObject();
+  cJSON_AddItemToObject(pJson, "SyncAppendEntriesReply", pRoot);
+  return pJson;
+}
+
+char* syncAppendEntriesReply2Str(const SyncAppendEntriesReply* pMsg) {
+  cJSON* pJson = syncAppendEntriesReply2Json(pMsg);
+  char*  serialized = cJSON_Print(pJson);
+  cJSON_Delete(pJson);
+  return serialized;
+}
+
+// for debug ----------------------
+void syncAppendEntriesReplyPrint(const SyncAppendEntriesReply* pMsg) {
+  char* serialized = syncAppendEntriesReply2Str(pMsg);
+  printf("syncAppendEntriesReplyPrint | len:%d | %s \n", (int32_t)strlen(serialized), serialized);
+  fflush(NULL);
+  taosMemoryFree(serialized);
+}
+
+void syncAppendEntriesReplyPrint2(char* s, const SyncAppendEntriesReply* pMsg) {
+  char* serialized = syncAppendEntriesReply2Str(pMsg);
+  printf("syncAppendEntriesReplyPrint2 | len:%d | %s | %s \n", (int32_t)strlen(serialized), s, serialized);
+  fflush(NULL);
+  taosMemoryFree(serialized);
+}
+
+void syncAppendEntriesReplyLog(const SyncAppendEntriesReply* pMsg) {
+  char* serialized = syncAppendEntriesReply2Str(pMsg);
+  sTrace("syncAppendEntriesReplyLog | len:%d| %s", (int32_t)strlen(serialized), serialized);
+  taosMemoryFree(serialized);
+}
+
+void syncAppendEntriesReplyLog2(char* s, const SyncAppendEntriesReply* pMsg) {
+  if (gRaftDetailLog) {
+    char* serialized = syncAppendEntriesReply2Str(pMsg);
+    sTrace("syncAppendEntriesReplyLog2 | len:%d | %s | %s", (int32_t)strlen(serialized), s, serialized);
+    taosMemoryFree(serialized);
+  }
+}