diff --git a/include/common/tmsg.h b/include/common/tmsg.h
index 97be4389209d32441e3f0f5dc47f5b22bb24bb33..8cddc24bc7ed29a5343db4479edb16882c0ecbfa 100644
--- a/include/common/tmsg.h
+++ b/include/common/tmsg.h
@@ -26,6 +26,7 @@ extern "C" {
 #include "tarray.h"
 #include "tcoding.h"
 #include "tdataformat.h"
+#include "thash.h"
 #include "tlist.h"
 
 /* ------------------------ MESSAGE DEFINITIONS ------------------------ */
@@ -132,6 +133,73 @@ typedef enum _mgmt_table {
 #define TSDB_COL_IS_UD_COL(f) ((f & (~(TSDB_COL_NULL))) == TSDB_COL_UDC)
 #define TSDB_COL_REQ_NULL(f) (((f)&TSDB_COL_NULL) != 0)
 
+typedef struct SKlv {
+  int32_t keyLen;
+  int32_t valueLen;
+  void*   key;
+  void*   value;
+} SKlv;
+
+static FORCE_INLINE int taosEncodeSKlv(void** buf, const SKlv* pKlv) {
+  int tlen = 0;
+  tlen += taosEncodeFixedI32(buf, pKlv->keyLen);
+  tlen += taosEncodeFixedI32(buf, pKlv->valueLen);
+  tlen += taosEncodeBinary(buf, pKlv->key, pKlv->keyLen);
+  tlen += taosEncodeBinary(buf, pKlv->value, pKlv->valueLen);
+  return tlen;
+}
+
+static FORCE_INLINE void* taosDecodeSKlv(void* buf, SKlv* pKlv) {
+  buf = taosDecodeFixedI32(buf, &pKlv->keyLen);
+  buf = taosDecodeFixedI32(buf, &pKlv->valueLen);
+  buf = taosDecodeBinary(buf, &pKlv->key, pKlv->keyLen);
+  buf = taosDecodeBinary(buf, &pKlv->value, pKlv->valueLen);
+  return buf;
+}
+typedef struct SClientHbKey {
+  int32_t connId;
+  int32_t hbType;
+} SClientHbKey;
+
+static FORCE_INLINE int taosEncodeSClientHbKey(void** buf, const SClientHbKey* pKey) {
+  int tlen = 0;
+  tlen += taosEncodeFixedI32(buf, pKey->connId);
+  tlen += taosEncodeFixedI32(buf, pKey->hbType);
+  return tlen;
+}
+
+static FORCE_INLINE void* taosDecodeSClientHbKey(void* buf, SClientHbKey* pKey) {
+  buf = taosDecodeFixedI32(buf, &pKey->connId);
+  buf = taosDecodeFixedI32(buf, &pKey->hbType);
+  return buf;
+}
+
+typedef struct SClientHbReq {
+  SClientHbKey connKey;
+  SHashObj*    info;  // hash<Slv.key, Sklv>
+} SClientHbReq;
+
+typedef struct SClientHbBatchReq {
+  int64_t reqId;
+  SArray* reqs;  // SArray<SClientHbReq>
+} SClientHbBatchReq;
+
+int   tSerializeSClientHbReq(void** buf, const SClientHbReq* pReq);
+void* tDeserializeClientHbReq(void* buf, SClientHbReq* pReq);
+
+typedef struct SClientHbRsp {
+  SClientHbKey connKey;
+  int32_t      status;
+  int32_t      bodyLen;
+  void*        body;
+} SClientHbRsp;
+
+typedef struct SClientHbBatchRsp {
+  int64_t reqId;
+  int64_t rspId;
+  SArray* rsps;  // SArray<SClientHbRsp>
+} SClientHbBatchRsp;
+
 typedef struct SBuildTableMetaInput {
   int32_t vgId;
   char*   dbName;
@@ -1123,7 +1191,7 @@ typedef struct {
   int32_t topicNum;
   int64_t consumerId;
   char*   consumerGroup;
-  SArray* topicNames; // SArray<char*>
+  SArray* topicNames;  // SArray<char*>
 } SCMSubscribeReq;
 
 static FORCE_INLINE int tSerializeSCMSubscribeReq(void** buf, const SCMSubscribeReq* pReq) {
@@ -1132,7 +1200,7 @@ static FORCE_INLINE int tSerializeSCMSubscribeReq(void** buf, const SCMSubscribe
   tlen += taosEncodeFixedI64(buf, pReq->consumerId);
   tlen += taosEncodeString(buf, pReq->consumerGroup);
 
-  for(int i = 0; i < pReq->topicNum; i++) {
+  for (int i = 0; i < pReq->topicNum; i++) {
     tlen += taosEncodeString(buf, (char*)taosArrayGetP(pReq->topicNames, i));
   }
   return tlen;
@@ -1143,7 +1211,7 @@ static FORCE_INLINE void* tDeserializeSCMSubscribeReq(void* buf, SCMSubscribeReq
   buf = taosDecodeFixedI64(buf, &pReq->consumerId);
   buf = taosDecodeString(buf, &pReq->consumerGroup);
   pReq->topicNames = taosArrayInit(pReq->topicNum, sizeof(void*));
-  for(int i = 0; i < pReq->topicNum; i++) {
+  for (int i = 0; i < pReq->topicNum; i++) {
     char* name = NULL;
     buf = taosDecodeString(buf, &name);
     taosArrayPush(pReq->topicNames, &name);
@@ -1158,14 +1226,14 @@ typedef struct SMqSubTopic {
 } SMqSubTopic;
 
 typedef struct {
-  int32_t topicNum;
+  int32_t     topicNum;
   SMqSubTopic topics[];
 } SCMSubscribeRsp;
 
 static FORCE_INLINE int tSerializeSCMSubscribeRsp(void** buf, const SCMSubscribeRsp* pRsp) {
   int tlen = 0;
   tlen += taosEncodeFixedI32(buf, pRsp->topicNum);
-  for(int i = 0; i < pRsp->topicNum; i++) {
+  for (int i = 0; i < pRsp->topicNum; i++) {
     tlen += taosEncodeFixedI32(buf, pRsp->topics[i].vgId);
     tlen += taosEncodeFixedI64(buf, pRsp->topics[i].topicId);
     tlen += taosEncodeSEpSet(buf, &pRsp->topics[i].epSet);
@@ -1175,7 +1243,7 @@ static FORCE_INLINE int tSerializeSCMSubscribeRsp(void** buf, const SCMSubscribe
 
 static FORCE_INLINE void* tDeserializeSCMSubscribeRsp(void* buf, SCMSubscribeRsp* pRsp) {
   buf = taosDecodeFixedI32(buf, &pRsp->topicNum);
-  for(int i = 0; i < pRsp->topicNum; i++) {
+  for (int i = 0; i < pRsp->topicNum; i++) {
     buf = taosDecodeFixedI32(buf, &pRsp->topics[i].vgId);
     buf = taosDecodeFixedI64(buf, &pRsp->topics[i].topicId);
     buf = taosDecodeSEpSet(buf, &pRsp->topics[i].epSet);
diff --git a/source/client/inc/clientHb.h b/source/client/inc/clientHb.h
index 676b5c4c40276d009fbf3356a9261fddce16424a..73adb41308cfa71ae109bc9f399500e1ca395d6f 100644
--- a/source/client/inc/clientHb.h
+++ b/source/client/inc/clientHb.h
@@ -20,118 +20,21 @@
 
 typedef enum {
   mq = 0,
+  // type can be added here
+  //
   HEARTBEAT_TYPE_MAX
 } EHbType;
 
-typedef struct SKlv {
-  int32_t keyLen;
-  int32_t valueLen;
-  void*   key;
-  void*   value;
-} SKlv;
-
-static FORCE_INLINE int taosEncodeSKlv(void** buf, const SKlv* pKlv) {
-  int tlen = 0;
-  tlen += taosEncodeFixedI32(buf, pKlv->keyLen);
-  tlen += taosEncodeFixedI32(buf, pKlv->valueLen);
-  tlen += taosEncodeBinary(buf, pKlv->key, pKlv->keyLen);
-  tlen += taosEncodeBinary(buf, pKlv->value, pKlv->valueLen);
-  return tlen;
-}
-
-static FORCE_INLINE void* taosDecodeSKlv(void* buf, SKlv* pKlv) {
-  buf = taosDecodeFixedI32(buf, &pKlv->keyLen); 
-  buf = taosDecodeFixedI32(buf, &pKlv->valueLen);
-  buf = taosDecodeBinary(buf, &pKlv->key, pKlv->keyLen);
-  buf = taosDecodeBinary(buf, &pKlv->value, pKlv->valueLen);
-  return buf;
-}
-
-typedef struct SClientHbKey {
-  int32_t connId;
-  int32_t hbType;
-} SClientHbKey;
-
-static FORCE_INLINE int taosEncodeSClientHbKey(void** buf, const SClientHbKey* pKey) {
-  int tlen = 0;
-  tlen += taosEncodeFixedI32(buf, pKey->connId);
-  tlen += taosEncodeFixedI32(buf, pKey->hbType);
-  return tlen;
-}
-
-static FORCE_INLINE void* taosDecodeSClientHbKey(void* buf, SClientHbKey* pKey) {
-  buf = taosDecodeFixedI32(buf, &pKey->connId);
-  buf = taosDecodeFixedI32(buf, &pKey->hbType);
-  return buf;
-}
-
-typedef struct SClientHbReq {
-  SClientHbKey hbKey;
-  SHashObj* info;  // hash<Sklv>
-} SClientHbReq;
-
-static FORCE_INLINE int tSerializeSClientHbReq(void** buf, const SClientHbReq* pReq) {
-  int tlen = 0;
-  tlen += taosEncodeSClientHbKey(buf, &pReq->hbKey);
-  
-  void* pIter = NULL;
-  void* data;
-  SKlv klv;
-  data = taosHashIterate(pReq->info, pIter);
-  while (data != NULL) {
-    taosHashGetKey(data, &klv.key, (size_t*)&klv.keyLen);
-    klv.valueLen = taosHashGetDataLen(data);
-    klv.value = data;
-    taosEncodeSKlv(buf, &klv);
-
-    data = taosHashIterate(pReq->info, pIter);
-  }
-  return tlen;
-}
-
-static FORCE_INLINE void* tDeserializeClientHbReq(void* buf, SClientHbReq* pReq) {
-  ASSERT(pReq->info != NULL);
-  buf = taosDecodeSClientHbKey(buf, &pReq->hbKey);
-
-  //TODO: error handling
-  if(pReq->info == NULL) {
-    pReq->info = taosHashInit(64, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), true, HASH_NO_LOCK);
-  }
-  SKlv klv;
-  buf = taosDecodeSKlv(buf, &klv);
-  taosHashPut(pReq->info, klv.key, klv.keyLen, klv.value, klv.valueLen);
-  
-  return buf;
-}
-
-typedef struct SClientHbBatchReq {
-  int64_t reqId;
-  SArray* reqs;  // SArray<SClientHbReq>
-} SClientHbBatchReq;
-
-typedef struct SClientHbHandleResult {
-} SClientHbHandleResult;
-
-typedef struct SClientHbRsp {
-  int32_t connId;
-  int32_t hbType;
-} SClientHbRsp;
-
-typedef struct SClientHbBatchRsp {
-  int64_t reqId;
-  int64_t rspId;
-  SArray* rsps;  // SArray<SClientHbRsp>
-} SClientHbBatchRsp;
-
-typedef int32_t (*FHbRspHandle)(SClientHbReq* pReq);
-typedef int32_t (*FGetConnInfo)(int32_t conn, void* self);
+typedef int32_t (*FHbRspHandle)(SClientHbRsp* pReq);
+typedef int32_t (*FGetConnInfo)(SClientHbKey connKey, void* param);
 
 typedef struct SClientHbMgr {
   int8_t       inited;
   int32_t      reportInterval;  // unit ms
   int32_t      stats;
   SRWLatch     lock;
-  SHashObj*    info;   //hash<SClientHbKey, SClientHbReq>
+  SHashObj*    activeInfo;    // hash<SClientHbKey, SClientHbReq>
+  SHashObj*    getInfoFuncs;  // hash<SClientHbKey, FGetConnInfo>
   FHbRspHandle handle[HEARTBEAT_TYPE_MAX];
   // input queue
 } SClientHbMgr;
@@ -140,9 +43,11 @@ static SClientHbMgr clientHbMgr = {0};
 
 int  hbMgrInit();
 void hbMgrCleanUp();
+int hbHandleRsp(void* hbMsg);
+
+
+int hbRegisterConn(SClientHbKey connKey, FGetConnInfo func);
 
-int registerConn(int32_t connId, FGetConnInfo func, FHbRspHandle rspHandle);
 
-int registerHbRspHandle(int32_t connId, int32_t hbType, FHbRspHandle rspHandle);
+int hbAddConnInfo(SClientHbKey connKey, void* key, void* value, int32_t keyLen, int32_t valueLen);
 
-int HbAddConnInfo(int32_t connId, void* key, void* value, int32_t keyLen, int32_t valueLen);
diff --git a/source/client/src/clientHb.c b/source/client/src/clientHb.c
index f1f7409f05bb3912359258107595b4f1c4a5350f..7daa1204d0022b216aac7636c18a2be39b9b2dfd 100644
--- a/source/client/src/clientHb.c
+++ b/source/client/src/clientHb.c
@@ -15,45 +15,62 @@
 
 #include "clientHb.h"
 
-static int32_t mqHbRspHandle(SClientHbReq* pReq) {
+static int32_t mqHbRspHandle(SClientHbRsp* pReq) {
   return 0;
 }
 
+uint32_t hbKeyHashFunc(const char* key, uint32_t keyLen) {
+  return 0;
+}
+
+static void hbMgrInitMqHbFunc() {
+  clientHbMgr.handle[mq] = mqHbRspHandle;
+}
+
 int hbMgrInit() {
   //init once
-  //
-  //init lock
-  //
-  //init handle funcs
-  clientHbMgr.handle[mq] = mqHbRspHandle;
+  int8_t old = atomic_val_compare_exchange_8(&clientHbMgr.inited, 0, 1);
+  if (old == 1) return 0;
+
+  //init config
+  clientHbMgr.reportInterval = 1500;
 
   //init stat
   clientHbMgr.stats = 0;
   
-  //init config
-  clientHbMgr.reportInterval = 1500;
+  //init lock
+  taosInitRWLatch(&clientHbMgr.lock);
+
+  //init handle funcs
+  hbMgrInitMqHbFunc();
 
   //init hash info
-  //
+  clientHbMgr.activeInfo = taosHashInit(64, hbKeyHashFunc, 1, HASH_ENTRY_LOCK);
+  //init getInfoFunc
+  clientHbMgr.getInfoFuncs = taosHashInit(64, hbKeyHashFunc, 1, HASH_ENTRY_LOCK);
   return 0;
 }
 
 void hbMgrCleanUp() {
+  int8_t old = atomic_val_compare_exchange_8(&clientHbMgr.inited, 1, 0);
+  if (old == 0) return;
 
+  taosHashCleanup(clientHbMgr.activeInfo);
+  taosHashCleanup(clientHbMgr.getInfoFuncs);
 }
 
-int registerConn(int32_t connId, FGetConnInfo func, FHbRspHandle rspHandle) {
-  return 0;
-}
-
-int registerHbRspHandle(int32_t connId, int32_t hbType, FHbRspHandle rspHandle) {
+int hbRegisterConn(SClientHbKey connKey, FGetConnInfo func) {
+  
   return 0;
 }
 
-int HbAddConnInfo(int32_t connId, void* key, void* value, int32_t keyLen, int32_t valueLen) {
+int hbAddConnInfo(SClientHbKey connKey, void* key, void* value, int32_t keyLen, int32_t valueLen) {
   //lock
 
   //find req by connection id
+  SClientHbReq* data = taosHashGet(clientHbMgr.activeInfo, &connKey, sizeof(SClientHbKey));
+  ASSERT(data != NULL);
+  taosHashPut(data->info, key, keyLen, value, valueLen);
 
   //unlock
   return 0;
diff --git a/source/common/src/tmsg.c b/source/common/src/tmsg.c
index c1048f8482ae10cc1eb9cfc77327e3e143c6f683..5cbb42c1e6f42134c773ec146656e0f292350e5f 100644
--- a/source/common/src/tmsg.c
+++ b/source/common/src/tmsg.c
@@ -27,6 +27,40 @@
 #undef TD_MSG_SEG_CODE_
 #include "tmsgdef.h"
 
+int tSerializeSClientHbReq(void **buf, const SClientHbReq *pReq) {
+  int tlen = 0;
+  tlen += taosEncodeSClientHbKey(buf, &pReq->connKey);
+
+  void *pIter = NULL;
+  void *data;
+  SKlv  klv;
+  data = taosHashIterate(pReq->info, pIter);
+  while (data != NULL) {
+    taosHashGetKey(data, &klv.key, (size_t *)&klv.keyLen);
+    klv.valueLen = taosHashGetDataLen(data);
+    klv.value = data;
+    taosEncodeSKlv(buf, &klv);
+
+    data = taosHashIterate(pReq->info, pIter);
+  }
+  return tlen;
+}
+
+void *tDeserializeClientHbReq(void *buf, SClientHbReq *pReq) {
+  ASSERT(pReq->info != NULL);
+  buf = taosDecodeSClientHbKey(buf, &pReq->connKey);
+
+  // TODO: error handling
+  if (pReq->info == NULL) {
+    pReq->info = taosHashInit(64, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), true, HASH_NO_LOCK);
+  }
+  SKlv klv;
+  buf = taosDecodeSKlv(buf, &klv);
+  taosHashPut(pReq->info, klv.key, klv.keyLen, klv.value, klv.valueLen);
+
+  return buf;
+}
+
 int tSerializeSVCreateTbReq(void **buf, SVCreateTbReq *pReq) {
   int tlen = 0;
 
@@ -148,4 +182,4 @@ void *tSVCreateTbBatchReqDeserialize(void *buf, SVCreateTbBatchReq *pReq) {
   }
 
   return buf;
-}
\ No newline at end of file
+}