diff --git a/source/libs/sync/inc/syncIndexMgr.h b/source/libs/sync/inc/syncIndexMgr.h
index e11094e73a883c5d44d0cc2d36695a88a38fe847..1f60a9d57e75c86bce5cd57d5a04540681c9df3c 100644
--- a/source/libs/sync/inc/syncIndexMgr.h
+++ b/source/libs/sync/inc/syncIndexMgr.h
@@ -41,8 +41,8 @@ void           syncIndexMgrDestroy(SSyncIndexMgr *pSyncIndexMgr);
 void           syncIndexMgrClear(SSyncIndexMgr *pSyncIndexMgr);
 void           syncIndexMgrSetIndex(SSyncIndexMgr *pSyncIndexMgr, const SRaftId *pRaftId, SyncIndex index);
 SyncIndex      syncIndexMgrGetIndex(SSyncIndexMgr *pSyncIndexMgr, const SRaftId *pRaftId);
-cJSON         *syncIndexMgr2Json(SSyncIndexMgr *pSyncIndexMgr);
-char          *syncIndexMgr2Str(SSyncIndexMgr *pSyncIndexMgr);
+cJSON *        syncIndexMgr2Json(SSyncIndexMgr *pSyncIndexMgr);
+char *         syncIndexMgr2Str(SSyncIndexMgr *pSyncIndexMgr);
 
 // void     syncIndexMgrSetTerm(SSyncIndexMgr *pSyncIndexMgr, const SRaftId *pRaftId, SyncTerm term);
 // SyncTerm syncIndexMgrGetTerm(SSyncIndexMgr *pSyncIndexMgr, const SRaftId *pRaftId);
diff --git a/source/libs/sync/inc/syncUtil.h b/source/libs/sync/inc/syncUtil.h
index 1b08d3f7a150822cd22758276b0b8fc667829f69..7ecff7ae97bf04da20c1817c413a44a0dd32e8c8 100644
--- a/source/libs/sync/inc/syncUtil.h
+++ b/source/libs/sync/inc/syncUtil.h
@@ -61,6 +61,7 @@ bool        syncUtilIsData(tmsg_t msgType);
 bool        syncUtilUserPreCommit(tmsg_t msgType);
 bool        syncUtilUserCommit(tmsg_t msgType);
 bool        syncUtilUserRollback(tmsg_t msgType);
+void        syncUtilJson2Line(char* jsonStr);
 
 #ifdef __cplusplus
 }
diff --git a/source/libs/sync/src/syncSnapshot.c b/source/libs/sync/src/syncSnapshot.c
index 021306397b2cb66cfef29428da8f7d8f2f56eb89..5b28e5531f7f2262b4464c9de9cb6430e81c96ef 100644
--- a/source/libs/sync/src/syncSnapshot.c
+++ b/source/libs/sync/src/syncSnapshot.c
@@ -296,7 +296,7 @@ cJSON *snapshotSender2Json(SSyncSnapshotSender *pSender) {
 
 char *snapshotSender2Str(SSyncSnapshotSender *pSender) {
   cJSON *pJson = snapshotSender2Json(pSender);
-  char  *serialized = cJSON_Print(pJson);
+  char * serialized = cJSON_Print(pJson);
   cJSON_Delete(pJson);
   return serialized;
 }
@@ -416,7 +416,7 @@ cJSON *snapshotReceiver2Json(SSyncSnapshotReceiver *pReceiver) {
 
 char *snapshotReceiver2Str(SSyncSnapshotReceiver *pReceiver) {
   cJSON *pJson = snapshotReceiver2Json(pReceiver);
-  char  *serialized = cJSON_Print(pJson);
+  char * serialized = cJSON_Print(pJson);
   cJSON_Delete(pJson);
   return serialized;
 }
@@ -438,7 +438,8 @@ int32_t syncNodeOnSnapshotSendCb(SSyncNode *pSyncNode, SyncSnapshotSend *pMsg) {
         needRsp = true;
 
         char *msgStr = syncSnapshotSend2Str(pMsg);
-        sTrace("snapshot recv begin ack:%d, lastIndex:%ld, lastTerm:%lu, recv msg:%s", pReceiver->ack, pMsg->lastIndex, pMsg->lastTerm, msgStr);
+        sTrace("snapshot recv begin ack:%d, lastIndex:%ld, lastTerm:%lu, recv msg:%s", pReceiver->ack, pMsg->lastIndex,
+               pMsg->lastTerm, msgStr);
         taosMemoryFree(msgStr);
 
       } else if (pMsg->seq == SYNC_SNAPSHOT_SEQ_END) {
@@ -447,10 +448,13 @@ int32_t syncNodeOnSnapshotSendCb(SSyncNode *pSyncNode, SyncSnapshotSend *pMsg) {
         pSyncNode->pFsm->FpSnapshotStopWrite(pSyncNode->pFsm, pReceiver->pWriter, true);
 
         pSyncNode->pLogStore->syncLogSetBeginIndex(pSyncNode->pLogStore, pMsg->lastIndex + 1);
-        char *logSimpleStr = logStoreSimple2Str(pSyncNode->pLogStore);
+        char *    logSimpleStr = logStoreSimple2Str(pSyncNode->pLogStore);
         SSnapshot snapshot;
         pSyncNode->pFsm->FpGetSnapshot(pSyncNode->pFsm, &snapshot);
-        sInfo("snapshot recv finish, update log begin index:%ld, snapshot.lastApplyIndex:%ld, snapshot.lastApplyTerm:%lu, raft log:%s", pMsg->lastIndex + 1, snapshot.lastApplyIndex, snapshot.lastApplyTerm, logSimpleStr);
+        sInfo(
+            "snapshot recv finish, update log begin index:%ld, snapshot.lastApplyIndex:%ld, "
+            "snapshot.lastApplyTerm:%lu, raft log:%s",
+            pMsg->lastIndex + 1, snapshot.lastApplyIndex, snapshot.lastApplyTerm, logSimpleStr);
         taosMemoryFree(logSimpleStr);
 
         // walRestoreFromSnapshot(pSyncNode->pWal, pMsg->lastIndex);
@@ -462,7 +466,8 @@ int32_t syncNodeOnSnapshotSendCb(SSyncNode *pSyncNode, SyncSnapshotSend *pMsg) {
         needRsp = true;
 
         char *msgStr = syncSnapshotSend2Str(pMsg);
-        sTrace("snapshot recv end ack:%d, lastIndex:%ld, lastTerm:%lu, recv msg:%s", pReceiver->ack, pMsg->lastIndex, pMsg->lastTerm, msgStr);
+        sTrace("snapshot recv end ack:%d, lastIndex:%ld, lastTerm:%lu, recv msg:%s", pReceiver->ack, pMsg->lastIndex,
+               pMsg->lastTerm, msgStr);
         taosMemoryFree(msgStr);
 
       } else if (pMsg->seq == SYNC_SNAPSHOT_SEQ_FORCE_CLOSE) {
@@ -471,9 +476,9 @@ int32_t syncNodeOnSnapshotSendCb(SSyncNode *pSyncNode, SyncSnapshotSend *pMsg) {
         needRsp = false;
 
         char *msgStr = syncSnapshotSend2Str(pMsg);
-        sTrace("snapshot recv force close ack:%d, lastIndex:%ld, lastTerm:%lu, recv msg:%s", pReceiver->ack, pMsg->lastIndex, pMsg->lastTerm, msgStr);
+        sTrace("snapshot recv force close ack:%d, lastIndex:%ld, lastTerm:%lu, recv msg:%s", pReceiver->ack,
+               pMsg->lastIndex, pMsg->lastTerm, msgStr);
 
-        
         taosMemoryFree(msgStr);
 
       } else if (pMsg->seq > SYNC_SNAPSHOT_SEQ_BEGIN && pMsg->seq < SYNC_SNAPSHOT_SEQ_END) {
@@ -485,7 +490,8 @@ int32_t syncNodeOnSnapshotSendCb(SSyncNode *pSyncNode, SyncSnapshotSend *pMsg) {
         needRsp = true;
 
         char *msgStr = syncSnapshotSend2Str(pMsg);
-        sTrace("snapshot recv receiving ack:%d, lastIndex:%ld, lastTerm:%lu, recv msg:%s", pReceiver->ack, pMsg->lastIndex, pMsg->lastTerm, msgStr);
+        sTrace("snapshot recv receiving ack:%d, lastIndex:%ld, lastTerm:%lu, recv msg:%s", pReceiver->ack,
+               pMsg->lastIndex, pMsg->lastTerm, msgStr);
         taosMemoryFree(msgStr);
 
       } else {
diff --git a/source/libs/sync/src/syncUtil.c b/source/libs/sync/src/syncUtil.c
index 48567b75c27b8c13aaefc6d029c4c7a957b23c1a..f6ff521e01a456a4a26ecd42fd4161771aefdac3 100644
--- a/source/libs/sync/src/syncUtil.c
+++ b/source/libs/sync/src/syncUtil.c
@@ -240,4 +240,26 @@ bool syncUtilUserRollback(tmsg_t msgType) {
     return true;
   }
   return false;
+}
+
+void syncUtilJson2Line(char* jsonStr) {
+  int p, q, len;
+  p = 0;
+  q = 1;
+  len = strlen(jsonStr);
+  while (1) {
+    if (jsonStr[q] == '\0') {
+      jsonStr[p + 1] = '\0';
+      break;
+    }
+
+    if (jsonStr[q] == '\n' || jsonStr[q] == ' ' || jsonStr[q] == '\t') {
+      q++;
+      continue;
+    } else {
+      jsonStr[p + 1] = jsonStr[q];
+      p++;
+      q++;
+    }
+  }
 }
\ No newline at end of file
diff --git a/source/libs/sync/test/syncIndexMgrTest.cpp b/source/libs/sync/test/syncIndexMgrTest.cpp
index 7fb80e9d58fe7dc915207f7aa785b944d391c5ae..0ad69f0f51e8ebe54e67157590e5b333bcd9aac0 100644
--- a/source/libs/sync/test/syncIndexMgrTest.cpp
+++ b/source/libs/sync/test/syncIndexMgrTest.cpp
@@ -66,9 +66,9 @@ int main(int argc, char** argv) {
   syncIndexMgrSetIndex(pSyncIndexMgr, &ids[0], 100);
   syncIndexMgrSetIndex(pSyncIndexMgr, &ids[1], 200);
   syncIndexMgrSetIndex(pSyncIndexMgr, &ids[2], 300);
-  //syncIndexMgrSetTerm(pSyncIndexMgr, &ids[0], 700);
-  //syncIndexMgrSetTerm(pSyncIndexMgr, &ids[1], 800);
-  //syncIndexMgrSetTerm(pSyncIndexMgr, &ids[2], 900);
+  // syncIndexMgrSetTerm(pSyncIndexMgr, &ids[0], 700);
+  // syncIndexMgrSetTerm(pSyncIndexMgr, &ids[1], 800);
+  // syncIndexMgrSetTerm(pSyncIndexMgr, &ids[2], 900);
   {
     char* serialized = syncIndexMgr2Str(pSyncIndexMgr);
     assert(serialized != NULL);
@@ -80,8 +80,8 @@ int main(int argc, char** argv) {
   printf("---------------------------------------\n");
   for (int i = 0; i < pSyncIndexMgr->replicaNum; ++i) {
     SyncIndex idx = syncIndexMgrGetIndex(pSyncIndexMgr, &ids[i]);
-    //SyncTerm  term = syncIndexMgrGetTerm(pSyncIndexMgr, &ids[i]);
-    //printf("%d: index:%ld term:%lu \n", i, idx, term);
+    // SyncTerm  term = syncIndexMgrGetTerm(pSyncIndexMgr, &ids[i]);
+    // printf("%d: index:%ld term:%lu \n", i, idx, term);
   }
   printf("---------------------------------------\n");
 
diff --git a/source/libs/sync/test/syncTimeoutTest.cpp b/source/libs/sync/test/syncTimeoutTest.cpp
index 30f25bd1d8d59b57621588e4ee13452cccc8f5ec..6125b24c1a446940f7121a8a94d9332d70fbf616 100644
--- a/source/libs/sync/test/syncTimeoutTest.cpp
+++ b/source/libs/sync/test/syncTimeoutTest.cpp
@@ -78,6 +78,26 @@ void test5() {
   syncTimeoutDestroy(pMsg2);
 }
 
+void test6() {
+  SyncTimeout *pMsg = createMsg();
+  char *      jsonStr = syncTimeout2Str(pMsg);
+  sTrace("jsonStr: %s", jsonStr);
+
+  syncUtilJson2Line(jsonStr);
+  sTrace("jsonStr: %s", jsonStr);
+
+  char str[10];
+  snprintf(str, sizeof(str), "%s", "{}");
+  sTrace("str: %s", str);
+  syncUtilJson2Line(str);
+  sTrace("str: %s", str);
+
+  snprintf(str, sizeof(str), "%s", "");
+  sTrace("str: %s", str);
+  syncUtilJson2Line(str);
+  sTrace("str: %s", str);
+}
+
 int main() {
   tsAsyncLog = 0;
   sDebugFlag = DEBUG_TRACE + DEBUG_SCREEN + DEBUG_FILE;
@@ -88,6 +108,7 @@ int main() {
   test3();
   test4();
   test5();
+  test6();
 
   return 0;
 }