diff --git a/src/client/inc/tsclient.h b/src/client/inc/tsclient.h
index be82eb64a881460d2f8dc751ce99d793dc6cb0db..e1180c414345da3e668d8eaece895c3c011f2004 100644
--- a/src/client/inc/tsclient.h
+++ b/src/client/inc/tsclient.h
@@ -457,7 +457,7 @@ extern void *    tscQhandle;
 extern int       tscKeepConn[];
 extern int       tsInsertHeadSize;
 extern int       tscNumOfThreads;
-extern SRpcIpSet tscMgmtIpSet;
+extern SRpcCorIpSet tscMgmtIpSet;
 
 extern int (*tscBuildMsg[TSDB_SQL_MAX])(SSqlObj *pSql, SSqlInfo *pInfo);
 
diff --git a/src/client/src/tscServer.c b/src/client/src/tscServer.c
index d8af6d5c877018254af1aab9943d3d3fe0431b18..e8a03a64828853ee0508c881349408abe7c66faa 100644
--- a/src/client/src/tscServer.c
+++ b/src/client/src/tscServer.c
@@ -29,7 +29,7 @@
 
 #define TSC_MGMT_VNODE 999
 
-SRpcIpSet  tscMgmtIpSet;
+SRpcCorIpSet  tscMgmtIpSet;
 SRpcIpSet  tscDnodeIpSet;
 
 int (*tscBuildMsg[TSDB_SQL_MAX])(SSqlObj *pSql, SSqlInfo *pInfo) = {0};
@@ -44,6 +44,42 @@ void tscSaveSubscriptionProgress(void* sub);
 
 static int32_t minMsgSize() { return tsRpcHeadSize + 100; }
 
+static void tscDumpMgmtIpSet(SRpcIpSet *ipSet) {
+  taosCorBeginRead(&tscMgmtIpSet.version);
+  *ipSet = tscMgmtIpSet.ipSet;
+  taosCorEndRead(&tscMgmtIpSet.version);
+}  
+
+bool tscIpSetIsEqual(SRpcIpSet *s1, SRpcIpSet *s2) {
+   if (s1->numOfIps != s2->numOfIps 
+        || s1->inUse != s1->inUse) {
+     return false;
+   } 
+   for (int32_t i = 0; i < s1->numOfIps; i++) {
+     if (s1->port[i] != s2->port[i] 
+        || strncmp(s1->fqdn[i], s2->fqdn[i], TSDB_FQDN_LEN) != 0)
+        return false;
+   }
+   return true;
+}
+void tscSetMgmtIpList(SRpcIpSet *pIpSet) {
+  // no need to update if equal
+  SRpcIpSet dump;
+  tscDumpMgmtIpSet(&dump);
+  if (tscIpSetIsEqual(&dump, pIpSet)) {
+    return; 
+  }
+   
+  taosCorBeginWrite(&tscMgmtIpSet.version);
+  SRpcIpSet *mgmtIpSet = &tscMgmtIpSet.ipSet;
+  mgmtIpSet->numOfIps = pIpSet->numOfIps;
+  mgmtIpSet->inUse = pIpSet->inUse;
+  for (int32_t i = 0; i < mgmtIpSet->numOfIps; ++i) {
+     mgmtIpSet->port[i] = htons(pIpSet->port[i]);
+     strncpy(mgmtIpSet->fqdn[i], pIpSet->fqdn[i], TSDB_FQDN_LEN);
+  }
+  taosCorEndWrite(&tscMgmtIpSet.version);
+}
 static void tscSetDnodeIpList(SSqlObj* pSql, SCMVgroupInfo* pVgroupInfo) {
   SRpcIpSet* pIpList = &pSql->ipList;
   pIpList->inUse    = 0;
@@ -60,31 +96,17 @@ static void tscSetDnodeIpList(SSqlObj* pSql, SCMVgroupInfo* pVgroupInfo) {
 }
 
 void tscPrintMgmtIp() {
-  if (tscMgmtIpSet.numOfIps <= 0) {
-    tscError("invalid mnode IP list:%d", tscMgmtIpSet.numOfIps);
+  SRpcIpSet dump;
+  tscDumpMgmtIpSet(&dump);
+  if (dump.numOfIps <= 0) {
+    tscError("invalid mnode IP list:%d", dump.numOfIps);
   } else {
-    for (int i = 0; i < tscMgmtIpSet.numOfIps; ++i) {
-      tscDebug("mnode index:%d %s:%d", i, tscMgmtIpSet.fqdn[i], tscMgmtIpSet.port[i]);
+    for (int i = 0; i < dump.numOfIps; ++i) {
+      tscDebug("mnode index:%d %s:%d", i, dump.fqdn[i], dump.port[i]);
     }
   }
 }
 
-void tscSetMgmtIpList(SRpcIpSet *pIpList) {
-  tscMgmtIpSet.numOfIps = pIpList->numOfIps;
-  tscMgmtIpSet.inUse = pIpList->inUse;
-  for (int32_t i = 0; i < tscMgmtIpSet.numOfIps; ++i) {
-    tscMgmtIpSet.port[i] = htons(pIpList->port[i]);
-  }
-}
-
-void tscUpdateIpSet(void *ahandle, SRpcIpSet *pIpSet) {
-  tscMgmtIpSet = *pIpSet;
-  tscDebug("mnode IP list is changed for ufp is called, numOfIps:%d inUse:%d", tscMgmtIpSet.numOfIps, tscMgmtIpSet.inUse);
-  for (int32_t i = 0; i < tscMgmtIpSet.numOfIps; ++i) {
-    tscDebug("index:%d fqdn:%s port:%d", i, tscMgmtIpSet.fqdn[i], tscMgmtIpSet.port[i]);
-  }
-}
-
 /*
  * For each management node, try twice at least in case of poor network situation.
  * If the client start to connect to a non-management node from the client, and the first retry may fail due to
@@ -95,7 +117,9 @@ void tscUpdateIpSet(void *ahandle, SRpcIpSet *pIpSet) {
 UNUSED_FUNC
 static int32_t tscGetMgmtConnMaxRetryTimes() {
   int32_t factor = 2;
-  return tscMgmtIpSet.numOfIps * factor;
+  SRpcIpSet dump;
+  tscDumpMgmtIpSet(&dump);
+  return dump.numOfIps * factor;
 }
 
 void tscProcessHeartBeatRsp(void *param, TAOS_RES *tres, int code) {
@@ -185,7 +209,9 @@ int tscSendMsgToServer(SSqlObj *pSql) {
 
   // set the mgmt ip list
   if (pSql->cmd.command >= TSDB_SQL_MGMT) {
-    pSql->ipList = tscMgmtIpSet;
+    SRpcIpSet dump;
+    tscDumpMgmtIpSet(&dump);
+    pSql->ipList = dump;
   }
 
   memcpy(pMsg, pSql->cmd.payload, pSql->cmd.payloadLen);
@@ -239,7 +265,7 @@ void tscProcessMsgFromServer(SRpcMsg *rpcMsg, SRpcIpSet *pIpSet) {
   if (pCmd->command < TSDB_SQL_MGMT) {
     if (pIpSet) pSql->ipList = *pIpSet;
   } else {
-    if (pIpSet) tscMgmtIpSet = *pIpSet;
+    if (pIpSet) tscSetMgmtIpList(pIpSet);  
   }
 
   if (rpcMsg->pCont == NULL) {
@@ -421,7 +447,9 @@ int tscProcessSql(SSqlObj *pSql) {
       return pSql->res.code;
     }
   } else if (pCmd->command < TSDB_SQL_LOCAL) {
-    pSql->ipList = tscMgmtIpSet;
+    SRpcIpSet dump;
+    tscDumpMgmtIpSet(&dump);
+    pSql->ipList = dump;
   } else {  // local handler
     return (*tscProcessMsgRsp[pCmd->command])(pSql);
   }
diff --git a/src/client/src/tscSql.c b/src/client/src/tscSql.c
index 0677463d8d01df899a377c7390a22743aa9b22ed..b24cfd9b27d653f4bfa35ffc75ac4ac23acca417 100644
--- a/src/client/src/tscSql.c
+++ b/src/client/src/tscSql.c
@@ -63,7 +63,7 @@ SSqlObj *taosConnectImpl(const char *ip, const char *user, const char *pass, con
 
   if (ip) {
     if (tscSetMgmtIpListFromCfg(ip, NULL) < 0) return NULL;
-    if (port) tscMgmtIpSet.port[0] = port;
+    if (port) tscMgmtIpSet.ipSet.port[0] = port;
   } 
  
   void *pDnodeConn = NULL;
diff --git a/src/client/src/tscSystem.c b/src/client/src/tscSystem.c
index 82cc8cc225399f2aa78da0989192b82acb3bf8eb..1a78ed87bdb60d993cbd06ed5855feba69ee6873 100644
--- a/src/client/src/tscSystem.c
+++ b/src/client/src/tscSystem.c
@@ -41,7 +41,8 @@ int tscNumOfThreads;
 
 static pthread_once_t tscinit = PTHREAD_ONCE_INIT;
 void taosInitNote(int numOfNoteLines, int maxNotes, char* lable);
-void tscUpdateIpSet(void *ahandle, SRpcIpSet *pIpSet);
+//void tscUpdateIpSet(void *ahandle, SRpcIpSet *pIpSet);
+
 
 void tscCheckDiskUsage(void *UNUSED_PARAM(para), void* UNUSED_PARAM(param)) {
   taosGetDisk();
diff --git a/src/client/src/tscUtil.c b/src/client/src/tscUtil.c
index 3e0fe0b4bec2c392c48fcbec84508ec5b1d3303a..b0e6c727eb2a09c8ed9f0455b94ea5dd357a8e07 100644
--- a/src/client/src/tscUtil.c
+++ b/src/client/src/tscUtil.c
@@ -2146,16 +2146,19 @@ char* strdup_throw(const char* str) {
 }
 
 int tscSetMgmtIpListFromCfg(const char *first, const char *second) {
-  tscMgmtIpSet.numOfIps = 0;
-  tscMgmtIpSet.inUse = 0;
+  // init mgmt ip set 
+  tscMgmtIpSet.version = 0;
+  SRpcIpSet *mgmtIpSet = &(tscMgmtIpSet.ipSet);
+  mgmtIpSet->numOfIps = 0;
+  mgmtIpSet->inUse = 0;
 
   if (first && first[0] != 0) {
     if (strlen(first) >= TSDB_EP_LEN) {
       terrno = TSDB_CODE_TSC_INVALID_FQDN;
       return -1;
     }
-    taosGetFqdnPortFromEp(first, tscMgmtIpSet.fqdn[tscMgmtIpSet.numOfIps], &tscMgmtIpSet.port[tscMgmtIpSet.numOfIps]);
-    tscMgmtIpSet.numOfIps++;
+    taosGetFqdnPortFromEp(first, mgmtIpSet->fqdn[mgmtIpSet->numOfIps], &(mgmtIpSet->port[mgmtIpSet->numOfIps]));
+    mgmtIpSet->numOfIps++;
   }
 
   if (second && second[0] != 0) {
@@ -2163,11 +2166,11 @@ int tscSetMgmtIpListFromCfg(const char *first, const char *second) {
       terrno = TSDB_CODE_TSC_INVALID_FQDN;
       return -1;
     }
-    taosGetFqdnPortFromEp(second, tscMgmtIpSet.fqdn[tscMgmtIpSet.numOfIps], &tscMgmtIpSet.port[tscMgmtIpSet.numOfIps]);
-    tscMgmtIpSet.numOfIps++;
+    taosGetFqdnPortFromEp(second, mgmtIpSet->fqdn[mgmtIpSet->numOfIps], &(mgmtIpSet->port[mgmtIpSet->numOfIps]));
+    mgmtIpSet->numOfIps++;
   }
 
-  if ( tscMgmtIpSet.numOfIps == 0) {
+  if (mgmtIpSet->numOfIps == 0) {
     terrno = TSDB_CODE_TSC_INVALID_FQDN;
     return -1;
   }
diff --git a/src/inc/trpc.h b/src/inc/trpc.h
index d1adfb7494aafb89912c508c65ab9a774fae4f09..b159155e9deb5f7bfe0171cf02f7dd5c7fc03170 100644
--- a/src/inc/trpc.h
+++ b/src/inc/trpc.h
@@ -35,6 +35,11 @@ typedef struct SRpcIpSet {
   char      fqdn[TSDB_MAX_REPLICA][TSDB_FQDN_LEN];
 } SRpcIpSet;
 
+typedef struct SRpcCorIpSet {
+  int32_t version; 
+  SRpcIpSet ipSet; 
+} SRpcCorIpSet;
+
 typedef struct SRpcConnInfo {
   uint32_t  clientIp;
   uint16_t  clientPort;