diff --git a/source/client/src/clientImpl.c b/source/client/src/clientImpl.c
index 56f89e30c40471f0f315478223dc57ad6b009bd3..227377c4a47602481f920e4014c1ad8fb31e2e7f 100644
--- a/source/client/src/clientImpl.c
+++ b/source/client/src/clientImpl.c
@@ -628,6 +628,10 @@ struct tmq_message_t {
 };
 
 int32_t tmq_poll_cb_inner(void* param, const SDataBuf* pMsg, int32_t code) {
+  if (code == -1) {
+    printf("discard\n");
+    return 0;
+  }
   SMqClientVg* pVg = (SMqClientVg*)param;
   SMqConsumeRsp rsp;
   tDecodeSMqConsumeRsp(pMsg->pData, &rsp);
@@ -680,6 +684,8 @@ int32_t tmq_ask_ep_cb(void* param, const SDataBuf* pMsg, int32_t code) {
   SMqAskEpCbParam* pParam = (SMqAskEpCbParam*)param;
   tmq_t* tmq = pParam->tmq;
   if (code != 0) {
+
+    printf("exit wait %d\n", pParam->wait);
     if (pParam->wait) {
       tsem_post(&tmq->rspSem);
     }
@@ -691,9 +697,9 @@ int32_t tmq_ask_ep_cb(void* param, const SDataBuf* pMsg, int32_t code) {
   tDecodeSMqCMGetSubEpRsp(pMsg->pData, &rsp);
   int32_t sz = taosArrayGetSize(rsp.topics);
   // TODO: lock
+    printf("rsp epoch %ld sz %ld\n", rsp.epoch, rsp.topics->size);
+    printf("tmq epoch %ld sz %ld\n", tmq->epoch, tmq->clientTopics->size);
   if (rsp.epoch != tmq->epoch) {
-    /*printf("rsp epoch %ld", rsp.epoch);*/
-    /*printf("tmq epoch %ld", tmq->epoch);*/
     //TODO
     if (tmq->clientTopics) taosArrayDestroy(tmq->clientTopics);
     tmq->clientTopics = taosArrayInit(sz, sizeof(SMqClientTopic));
diff --git a/source/dnode/mnode/impl/src/mndSubscribe.c b/source/dnode/mnode/impl/src/mndSubscribe.c
index 80ff6fd8bf5a8367f13cd9fdfa3bf24c3f0a0ef8..82173833abbb29331d06222ad9cad6b5bb9dcaa1 100644
--- a/source/dnode/mnode/impl/src/mndSubscribe.c
+++ b/source/dnode/mnode/impl/src/mndSubscribe.c
@@ -104,9 +104,6 @@ static int32_t mndProcessGetSubEpReq(SMnodeMsg *pMsg) {
     if (found == 0) {
       taosArrayPush(pSub->availConsumer, &consumerId);
     }
-    SSdbRaw* pRaw = mndSubActionEncode(pSub);
-    sdbSetRawStatus(pRaw, SDB_STATUS_READY);
-    sdbWriteNotFree(pMnode->pSdb, pRaw);
 
     int32_t          assignedSz = taosArrayGetSize(pSub->assigned);
     topicEp.vgs = taosArrayInit(assignedSz, sizeof(SMqSubVgEp));
@@ -126,7 +123,9 @@ static int32_t mndProcessGetSubEpReq(SMnodeMsg *pMsg) {
       taosArrayPush(rsp.topics, &topicEp);
     }
     if (changed || found) {
-
+      SSdbRaw* pRaw = mndSubActionEncode(pSub);
+      sdbSetRawStatus(pRaw, SDB_STATUS_READY);
+      sdbWriteNotFree(pMnode->pSdb, pRaw);
     }
     mndReleaseSubscribe(pMnode, pSub);
   }
@@ -183,12 +182,15 @@ static int32_t mndProcessMqTimerMsg(SMnodeMsg *pMsg) {
           }
           // TODO: acquire consumer, set status to unavail
         }
+#if 0
         SMqConsumerObj* pConsumer = mndAcquireConsumer(pMnode, consumerId);
         pConsumer->epoch++;
+        printf("current epoch %ld size %ld", pConsumer->epoch, pConsumer->topics->size);
         SSdbRaw* pRaw = mndConsumerActionEncode(pConsumer);
         sdbSetRawStatus(pRaw, SDB_STATUS_READY);
         sdbWriteNotFree(pMnode->pSdb, pRaw);
         mndReleaseConsumer(pMnode, pConsumer);
+#endif
       }
     }
     if ((sz = taosArrayGetSize(pSub->unassignedVg)) > 0 && taosArrayGetSize(pSub->availConsumer) > 0) {
@@ -207,6 +209,13 @@ static int32_t mndProcessMqTimerMsg(SMnodeMsg *pMsg) {
         taosArrayPush(pSub->assigned, pCEp);
         pSub->nextConsumerIdx = (pSub->nextConsumerIdx + 1) % taosArrayGetSize(pSub->availConsumer);
 
+        SMqConsumerObj* pConsumer = mndAcquireConsumer(pMnode, consumerId);
+        pConsumer->epoch++;
+        /*SSdbRaw* pConsumerRaw = mndConsumerActionEncode(pConsumer);*/
+        /*sdbSetRawStatus(pConsumerRaw, SDB_STATUS_READY);*/
+        /*sdbWriteNotFree(pMnode->pSdb, pConsumerRaw);*/
+        mndReleaseConsumer(pMnode, pConsumer);
+
         // build msg
 
         SMqSetCVgReq req = {0};
@@ -216,8 +225,9 @@ static int32_t mndProcessMqTimerMsg(SMnodeMsg *pMsg) {
         req.logicalPlan = pTopic->logicalPlan;
         req.physicalPlan = pTopic->physicalPlan;
         req.qmsg = pCEp->qmsg;
+        req.newConsumerId = consumerId;
         int32_t tlen = tEncodeSMqSetCVgReq(NULL, &req);
-        void   *buf = malloc(tlen);
+        void   *buf = malloc(sizeof(SMsgHead) + tlen);
         if (buf == NULL) {
           terrno = TSDB_CODE_OUT_OF_MEMORY;
           return -1;
@@ -262,6 +272,7 @@ static int mndInitUnassignedVg(SMnode *pMnode, SMqTopicObj *pTopic, SArray *unas
   SArray    *pArray;
   SArray    *inner = taosArrayGet(pDag->pSubplans, 0);
   SSubplan  *plan = taosArrayGetP(inner, 0);
+
   plan->execNode.inUse = 0;
   strcpy(plan->execNode.epAddr[0].fqdn, "localhost");
   plan->execNode.epAddr[0].port = 6030;
diff --git a/source/dnode/vnode/inc/vnode.h b/source/dnode/vnode/inc/vnode.h
index c8b47bf4a6b8635d2c494ea4aa8fd6622f5e264d..6fd7a99f544da5329752acf043c6b2440ef2cbc6 100644
--- a/source/dnode/vnode/inc/vnode.h
+++ b/source/dnode/vnode/inc/vnode.h
@@ -71,6 +71,7 @@ typedef struct {
 typedef struct STqReadHandle {
   int64_t         ver;
   uint64_t        tbUid;
+  SHashObj*       tbIdHash;
   SSubmitMsg*     pMsg;
   SSubmitBlk*     pBlock;
   SSubmitMsgIter  msgIter;
@@ -211,6 +212,19 @@ static FORCE_INLINE void tqReadHandleSetTbUid(STqReadHandle* pHandle, uint64_t t
   pHandle->tbUid = tbUid;
 }
 
+static FORCE_INLINE int tqReadHandleSetTbUidList(STqReadHandle* pHandle, SArray* tbUidList) {
+  pHandle->tbIdHash = taosHashInit(64, taosGetDefaultHashFunction(TSDB_DATA_TYPE_UBIGINT), true, HASH_NO_LOCK);
+  if (pHandle->tbIdHash == NULL) {
+    return -1;
+  }
+  for (int i = 0; i < taosArrayGetSize(tbUidList); i++) {
+    int64_t* pKey = (int64_t*)taosArrayGet(tbUidList, i);
+    taosHashPut(pHandle->tbIdHash, pKey, sizeof(int64_t), NULL, 0);
+    //pHandle->tbUid = tbUid;
+  }
+  return 0;
+}
+
 void           tqReadHandleSetMsg(STqReadHandle* pHandle, SSubmitMsg* pMsg, int64_t ver);
 bool           tqNextDataBlock(STqReadHandle* pHandle);
 int            tqRetrieveDataBlockInfo(STqReadHandle* pHandle, SDataBlockInfo* pBlockInfo);
diff --git a/source/dnode/vnode/src/tq/tq.c b/source/dnode/vnode/src/tq/tq.c
index 1ecd76e1b55e13cd16799e90c5d0ed2e6af2e6fe..aaa04d62593ae007476151cf813cd36d86a1ffdb 100644
--- a/source/dnode/vnode/src/tq/tq.c
+++ b/source/dnode/vnode/src/tq/tq.c
@@ -679,7 +679,13 @@ int32_t tqProcessConsumeReq(STQ* pTq, SRpcMsg* pMsg) {
   SMqConsumeRsp rsp = {.consumerId = consumerId, .numOfTopics = 0, .pBlockData = NULL};
 
   STqConsumerHandle* pConsumer = tqHandleGet(pTq->tqMeta, consumerId);
-  ASSERT(pConsumer);
+  if (pConsumer == NULL) {
+    pMsg->pCont = NULL;
+    pMsg->contLen = 0;
+    pMsg->code = -1;
+    rpcSendResponse(pMsg);
+    return 0;
+  }
   int sz = taosArrayGetSize(pConsumer->topics);
 
   for (int i = 0; i < sz; i++) {