diff --git a/include/common/tmsg.h b/include/common/tmsg.h
index ea7905f21a..ee81ed2042 100644
--- a/include/common/tmsg.h
+++ b/include/common/tmsg.h
@@ -70,13 +70,11 @@ typedef uint16_t tmsg_t;
 #define TSDB_IE_TYPE_DNODE_EXT   6
 #define TSDB_IE_TYPE_DNODE_STATE 7
 
-typedef enum {
-  HEARTBEAT_TYPE_MQ = 0,
-  HEARTBEAT_TYPE_QUERY,
-  // types can be added here
-  //
-  HEARTBEAT_TYPE_MAX
-} EHbType;
+enum {
+  CONN_TYPE__QUERY = 1,
+  CONN_TYPE__TMQ,
+  CONN_TYPE__MAX
+};
 
 enum {
   HEARTBEAT_KEY_DBINFO = 1,
@@ -1649,7 +1647,7 @@ typedef struct {
 
 typedef struct {
   int64_t tscRid;
-  int32_t hbType;
+  int8_t  connType;
 } SClientHbKey;
 
 typedef struct {
@@ -1796,13 +1794,13 @@ static FORCE_INLINE int32_t tDecodeSKv(SCoder* pDecoder, SKv* pKv) {
 
 static FORCE_INLINE int32_t tEncodeSClientHbKey(SCoder* pEncoder, const SClientHbKey* pKey) {
   if (tEncodeI64(pEncoder, pKey->tscRid) < 0) return -1;
-  if (tEncodeI32(pEncoder, pKey->hbType) < 0) return -1;
+  if (tEncodeI8(pEncoder, pKey->connType) < 0) return -1;
   return 0;
 }
 
 static FORCE_INLINE int32_t tDecodeSClientHbKey(SCoder* pDecoder, SClientHbKey* pKey) {
   if (tDecodeI64(pDecoder, &pKey->tscRid) < 0) return -1;
-  if (tDecodeI32(pDecoder, &pKey->hbType) < 0) return -1;
+  if (tDecodeI8(pDecoder, &pKey->connType) < 0) return -1;
   return 0;
 }
 
diff --git a/source/client/inc/clientInt.h b/source/client/inc/clientInt.h
index 61a3303c3f..79d6b2fdf1 100644
--- a/source/client/inc/clientInt.h
+++ b/source/client/inc/clientInt.h
@@ -45,11 +45,6 @@ extern "C" {
 
 #define HEARTBEAT_INTERVAL 1500  // ms
 
-enum {
-  CONN_TYPE__QUERY = 1,
-  CONN_TYPE__TMQ,
-};
-
 typedef struct SAppInstInfo SAppInstInfo;
 
 typedef struct {
@@ -84,8 +79,8 @@ typedef struct {
   TdThread      thread;
   TdThreadMutex lock;       // used when app init and cleanup
   SArray*       appHbMgrs;  // SArray<SAppHbMgr*> one for each cluster
-  FHbReqHandle  reqHandle[HEARTBEAT_TYPE_MAX];
-  FHbRspHandle  rspHandle[HEARTBEAT_TYPE_MAX];
+  FHbReqHandle  reqHandle[CONN_TYPE__MAX];
+  FHbRspHandle  rspHandle[CONN_TYPE__MAX];
 } SClientHbMgr;
 
 typedef struct SQueryExecMetric {
@@ -307,7 +302,7 @@ SAppHbMgr* appHbMgrInit(SAppInstInfo* pAppInstInfo, char* key);
 void       appHbMgrCleanup(void);
 
 // conn level
-int  hbRegisterConn(SAppHbMgr *pAppHbMgr, int64_t tscRefId, int64_t clusterId, int32_t hbType);
+int  hbRegisterConn(SAppHbMgr *pAppHbMgr, int64_t tscRefId, int64_t clusterId, int8_t connType);
 void hbDeregisterConn(SAppHbMgr* pAppHbMgr, SClientHbKey connKey);
 
 int hbAddConnInfo(SAppHbMgr* pAppHbMgr, SClientHbKey connKey, void* key, void* value, int32_t keyLen, int32_t valueLen);
diff --git a/source/client/src/clientEnv.c b/source/client/src/clientEnv.c
index 7f413bdabc..969b18f067 100644
--- a/source/client/src/clientEnv.c
+++ b/source/client/src/clientEnv.c
@@ -122,7 +122,7 @@ void closeAllRequests(SHashObj *pRequests) {
 void destroyTscObj(void *pObj) {
   STscObj *pTscObj = pObj;
 
-  SClientHbKey connKey = {.tscRid = pTscObj->id, .hbType = pTscObj->connType};
+  SClientHbKey connKey = {.tscRid = pTscObj->id, .connType = pTscObj->connType};
   hbDeregisterConn(pTscObj->pAppInfo->pAppHbMgr, connKey);
   atomic_sub_fetch_64(&pTscObj->pAppInfo->numOfConns, 1);
   closeAllRequests(pTscObj->pRequests);
diff --git a/source/client/src/clientHb.c b/source/client/src/clientHb.c
index 4bd8a89a38..e65a3017d6 100644
--- a/source/client/src/clientHb.c
+++ b/source/client/src/clientHb.c
@@ -110,7 +110,7 @@ static int32_t hbProcessStbInfoRsp(void *value, int32_t valueLen, struct SCatalo
 static int32_t hbQueryHbRspHandle(SAppHbMgr *pAppHbMgr, SClientHbRsp *pRsp) {
   SHbConnInfo *info = taosHashGet(pAppHbMgr->connInfo, &pRsp->connKey, sizeof(SClientHbKey));
   if (NULL == info) {
-    tscWarn("fail to get connInfo, may be dropped, refId:%" PRIx64 ", type:%d", pRsp->connKey.tscRid, pRsp->connKey.hbType);
+    tscWarn("fail to get connInfo, may be dropped, refId:%" PRIx64 ", type:%d", pRsp->connKey.tscRid, pRsp->connKey.connType);
     return TSDB_CODE_SUCCESS;
   }
 
@@ -224,7 +224,7 @@ static int32_t hbAsyncCallBack(void *param, const SDataBuf *pMsg, int32_t code)
 
   for (int32_t i = 0; i < rspNum; ++i) {
     SClientHbRsp *rsp = taosArrayGet(pRsp.rsps, i);
-    code = (*clientHbMgr.rspHandle[rsp->connKey.hbType])((*pInst)->pAppHbMgr, rsp);
+    code = (*clientHbMgr.rspHandle[rsp->connKey.connType])((*pInst)->pAppHbMgr, rsp);
     if (code) {
       break;
     }
@@ -420,11 +420,11 @@ int32_t hbQueryHbReqHandle(SClientHbKey *connKey, void *param, SClientHbReq *req
 }
 
 void hbMgrInitMqHbHandle() {
-  clientHbMgr.reqHandle[HEARTBEAT_TYPE_QUERY] = hbQueryHbReqHandle;
-  clientHbMgr.reqHandle[HEARTBEAT_TYPE_MQ] = hbMqHbReqHandle;
+  clientHbMgr.reqHandle[CONN_TYPE__QUERY] = hbQueryHbReqHandle;
+  clientHbMgr.reqHandle[CONN_TYPE__TMQ] = hbMqHbReqHandle;
 
-  clientHbMgr.rspHandle[HEARTBEAT_TYPE_QUERY] = hbQueryHbRspHandle;
-  clientHbMgr.rspHandle[HEARTBEAT_TYPE_MQ] = hbMqHbRspHandle;
+  clientHbMgr.rspHandle[CONN_TYPE__QUERY] = hbQueryHbRspHandle;
+  clientHbMgr.rspHandle[CONN_TYPE__TMQ] = hbMqHbRspHandle;
 }
 
 static FORCE_INLINE void hbMgrInitHandle() {
@@ -458,7 +458,7 @@ SClientHbBatchReq *hbGatherAllInfo(SAppHbMgr *pAppHbMgr) {
 
     SHbConnInfo *info = taosHashGet(pAppHbMgr->connInfo, &pOneReq->connKey, sizeof(SClientHbKey));
     if (info) {
-      code = (*clientHbMgr.reqHandle[pOneReq->connKey.hbType])(&pOneReq->connKey, info->param, pOneReq);
+      code = (*clientHbMgr.reqHandle[pOneReq->connKey.connType])(&pOneReq->connKey, info->param, pOneReq);
       if (code) {
         pIter = taosHashIterate(pAppHbMgr->activeInfo, pIter);
         continue;
@@ -692,22 +692,22 @@ int hbRegisterConnImpl(SAppHbMgr *pAppHbMgr, SClientHbKey connKey, SHbConnInfo *
   return 0;
 }
 
-int hbRegisterConn(SAppHbMgr *pAppHbMgr, int64_t tscRefId, int64_t clusterId, int32_t hbType) {
+int hbRegisterConn(SAppHbMgr *pAppHbMgr, int64_t tscRefId, int64_t clusterId, int8_t connType) {
   SClientHbKey connKey = {
       .tscRid = tscRefId,
-      .hbType = hbType,
+      .connType = connType,
   };
   SHbConnInfo info = {0};
 
-  switch (hbType) {
-    case HEARTBEAT_TYPE_QUERY: {
+  switch (connType) {
+    case CONN_TYPE__QUERY: {
       int64_t *pClusterId = taosMemoryMalloc(sizeof(int64_t));
       *pClusterId = clusterId;
 
       info.param = pClusterId;
       return hbRegisterConnImpl(pAppHbMgr, connKey, &info);
     }
-    case HEARTBEAT_TYPE_MQ: {
+    case CONN_TYPE__TMQ: {
       return 0;
     }
     default:
diff --git a/source/common/src/tmsg.c b/source/common/src/tmsg.c
index a9a28b4879..d78d89ab50 100644
--- a/source/common/src/tmsg.c
+++ b/source/common/src/tmsg.c
@@ -3424,5 +3424,4 @@ int32_t tDeserializeSCMCreateStreamReq(void *buf, int32_t bufLen, SCMCreateStrea
 
 void tFreeSCMCreateStreamReq(SCMCreateStreamReq *pReq) {
   taosMemoryFreeClear(pReq->sql);
-  taosMemoryFreeClear(pReq->ast);
-}
+  taosMemoryFreeClear(pReq->ast)
\ No newline at end of file
diff --git a/source/dnode/mnode/impl/src/mndProfile.c b/source/dnode/mnode/impl/src/mndProfile.c
index 96698e80bb..f169fb4b21 100644
--- a/source/dnode/mnode/impl/src/mndProfile.c
+++ b/source/dnode/mnode/impl/src/mndProfile.c
@@ -343,7 +343,7 @@ static int32_t mndProcessQueryHeartBeat(SMnode *pMnode, SRpcMsg *pMsg, SClientHb
 
     SConnObj *pConn = mndAcquireConn(pMnode, pBasic->connId);
     if (pConn == NULL) {    
-      pConn = mndCreateConn(pMnode, connInfo.user, connInfo.clientIp, connInfo.clientPort, pBasic->pid, pBasic->app, 0);
+      pConn = mndCreateConn(pMnode, connInfo.user, CONN_TYPE__QUERY, connInfo.clientIp, connInfo.clientPort, pBasic->pid, pBasic->app, 0);
       if (pConn == NULL) {
         mError("user:%s, conn:%u is freed and failed to create new since %s", connInfo.user, pBasic->connId, terrstr());
         return -1;
@@ -451,9 +451,9 @@ static int32_t mndProcessHeartBeatReq(SNodeMsg *pReq) {
   int32_t sz = taosArrayGetSize(batchReq.reqs);
   for (int i = 0; i < sz; i++) {
     SClientHbReq *pHbReq = taosArrayGet(batchReq.reqs, i);
-    if (pHbReq->connKey.hbType == HEARTBEAT_TYPE_QUERY) {
+    if (pHbReq->connKey.connType == CONN_TYPE__QUERY) {
       mndProcessQueryHeartBeat(pMnode, &pReq->rpcMsg, pHbReq, &batchRsp);
-    } else if (pHbReq->connKey.hbType == HEARTBEAT_TYPE_MQ) {
+    } else if (pHbReq->connKey.connType == CONN_TYPE__TMQ) {
       SClientHbRsp *pRsp = mndMqHbBuildRsp(pMnode, pHbReq);
       if (pRsp != NULL) {
         taosArrayPush(batchRsp.rsps, pRsp);
diff --git a/source/dnode/mnode/impl/test/profile/profile.cpp b/source/dnode/mnode/impl/test/profile/profile.cpp
index 14b31e5282..b06c98466b 100644
--- a/source/dnode/mnode/impl/test/profile/profile.cpp
+++ b/source/dnode/mnode/impl/test/profile/profile.cpp
@@ -99,7 +99,7 @@ TEST_F(MndTestProfile, 04_HeartBeatMsg) {
   SClientHbBatchReq batchReq = {0};
   batchReq.reqs = taosArrayInit(0, sizeof(SClientHbReq));
   SClientHbReq req = {0};
-  req.connKey = {.connId = 123, .hbType = HEARTBEAT_TYPE_MQ};
+  req.connKey = {.connId = 123, .hbType = CONN_TYPE__TMQ};
   req.info = taosHashInit(64, hbKeyHashFunc, 1, HASH_ENTRY_LOCK);
   SKv kv = {0};
   kv.key = 123;