diff --git a/include/common/tmsg.h b/include/common/tmsg.h
index a5c2c89b2450fc4bd98e51c7fe4165bbbeb94375..5a60761f112f2230de11a0f7e3d802de84163217 100644
--- a/include/common/tmsg.h
+++ b/include/common/tmsg.h
@@ -1118,6 +1118,17 @@ int32_t tSerializeSCMCreateStreamReq(void* buf, int32_t bufLen, const SCMCreateS
 int32_t tDeserializeSCMCreateStreamReq(void* buf, int32_t bufLen, SCMCreateStreamReq* pReq);
 void    tFreeSCMCreateStreamReq(SCMCreateStreamReq* pReq);
 
+typedef struct {
+  char    name[TSDB_TOPIC_FNAME_LEN];
+  int64_t streamId;
+  char*   sql;
+  char*   executorMsg;
+} SMVCreateStreamReq, SMSCreateStreamReq;
+
+typedef struct {
+  int64_t streamId;
+} SMVCreateStreamRsp, SMSCreateStreamRsp;
+
 typedef struct {
   char   name[TSDB_TOPIC_FNAME_LEN];
   int8_t igExists;
diff --git a/include/dnode/snode/snode.h b/include/dnode/snode/snode.h
index c9fab140cce647f22827648404b93d507a70e4c1..21a93532e0d77b3c8f5e6157380e7804b393d622 100644
--- a/include/dnode/snode/snode.h
+++ b/include/dnode/snode/snode.h
@@ -80,6 +80,10 @@ int32_t sndGetLoad(SSnode *pSnode, SSnodeLoad *pLoad);
  */
 int32_t sndProcessMsg(SSnode *pSnode, SRpcMsg *pMsg, SRpcMsg **pRsp);
 
+int32_t sndProcessUMsg(SSnode *pSnode, SRpcMsg *pMsg);
+
+int32_t sndProcessSMsg(SSnode *pSnode, SRpcMsg *pMsg);
+
 /**
  * @brief Drop a snode.
  *
diff --git a/source/dnode/mgmt/impl/inc/dndEnv.h b/source/dnode/mgmt/impl/inc/dndEnv.h
index 13ef101908906d309a88d2349382fdedb765cf30..aeea5386b4ea39d42cac8d599e53d595f71c5660 100644
--- a/source/dnode/mgmt/impl/inc/dndEnv.h
+++ b/source/dnode/mgmt/impl/inc/dndEnv.h
@@ -90,9 +90,11 @@ typedef struct {
   int32_t      refCount;
   int8_t       deployed;
   int8_t       dropped;
+  int8_t       uniqueWorkerInUse;
   SSnode      *pSnode;
   SRWLatch     latch;
-  SDnodeWorker writeWorker;
+  SArray      *uniqueWorkers;  // SArray<SDnodeWorker*>
+  SDnodeWorker sharedWorker;
 } SSnodeMgmt;
 
 typedef struct {
@@ -153,4 +155,4 @@ int32_t dndGetMonitorDiskInfo(SDnode *pDnode, SMonDiskInfo *pInfo);
 }
 #endif
 
-#endif /*_TD_DND_ENV_H_*/
\ No newline at end of file
+#endif /*_TD_DND_ENV_H_*/
diff --git a/source/dnode/mgmt/impl/inc/dndInt.h b/source/dnode/mgmt/impl/inc/dndInt.h
index 4ca6b97ad44d3e1fb21fe76cfdfa198def67552c..a8530037daabecd6c2fad43f8ad7f680315bd6e4 100644
--- a/source/dnode/mgmt/impl/inc/dndInt.h
+++ b/source/dnode/mgmt/impl/inc/dndInt.h
@@ -70,4 +70,4 @@ void dndGetStartup(SDnode *pDnode, SStartupReq *pStartup);
 }
 #endif
 
-#endif /*_TD_DND_INT_H_*/
\ No newline at end of file
+#endif /*_TD_DND_INT_H_*/
diff --git a/source/dnode/mgmt/impl/src/dndSnode.c b/source/dnode/mgmt/impl/src/dndSnode.c
index 4906aef246ec08d8b4c6c2ee7511aaed7fdf000f..d192d9df015a80f73995bf9a54eef5a9caa02c75 100644
--- a/source/dnode/mgmt/impl/src/dndSnode.c
+++ b/source/dnode/mgmt/impl/src/dndSnode.c
@@ -19,7 +19,20 @@
 #include "dndTransport.h"
 #include "dndWorker.h"
 
-static void dndProcessSnodeQueue(SDnode *pDnode, SRpcMsg *pMsg);
+typedef struct {
+  int32_t     vgId;
+  int32_t     refCount;
+  int32_t     snVersion;
+  int8_t      dropped;
+  char       *path;
+  SSnode     *pImpl;
+  STaosQueue *pSharedQ;
+  STaosQueue *pUniqueQ;
+} SSnodeObj;
+
+static void dndProcessSnodeSharedQueue(SDnode *pDnode, SRpcMsg *pMsg);
+
+static void dndProcessSnodeUniqueQueue(SDnode *pDnode, STaosQall *qall, int32_t numOfMsgs);
 
 static SSnode *dndAcquireSnode(SDnode *pDnode) {
   SSnodeMgmt *pMgmt = &pDnode->smgmt;
@@ -152,8 +165,18 @@ static int32_t dndWriteSnodeFile(SDnode *pDnode) {
 
 static int32_t dndStartSnodeWorker(SDnode *pDnode) {
   SSnodeMgmt *pMgmt = &pDnode->smgmt;
-  if (dndInitWorker(pDnode, &pMgmt->writeWorker, DND_WORKER_SINGLE, "snode-write", 0, 1, dndProcessSnodeQueue) != 0) {
-    dError("failed to start snode write worker since %s", terrstr());
+  pMgmt->uniqueWorkers = taosArrayInit(0, sizeof(void *));
+  for (int32_t i = 0; i < 2; i++) {
+    SDnodeWorker uniqueWorker;
+    if (dndInitWorker(pDnode, &uniqueWorker, DND_WORKER_MULTI, "snode-unique", 1, 1, dndProcessSnodeSharedQueue) != 0) {
+      dError("failed to start snode unique worker since %s", terrstr());
+      return -1;
+    }
+    taosArrayPush(pMgmt->uniqueWorkers, &uniqueWorker);
+  }
+  if (dndInitWorker(pDnode, &pMgmt->sharedWorker, DND_WORKER_SINGLE, "snode-shared", 4, 4,
+                    dndProcessSnodeSharedQueue)) {
+    dError("failed to start snode shared worker since %s", terrstr());
     return -1;
   }
 
@@ -169,9 +192,13 @@ static void dndStopSnodeWorker(SDnode *pDnode) {
 
   while (pMgmt->refCount > 0) {
     taosMsleep(10);
-  } 
+  }
 
-  dndCleanupWorker(&pMgmt->writeWorker);
+  for (int32_t i = 0; i < taosArrayGetSize(pMgmt->uniqueWorkers); i++) {
+    SDnodeWorker *worker = taosArrayGetP(pMgmt->uniqueWorkers, i);
+    dndCleanupWorker(worker);
+  }
+  taosArrayDestroy(pMgmt->uniqueWorkers);
 }
 
 static void dndBuildSnodeOption(SDnode *pDnode, SSnodeOpt *pOption) {
@@ -292,17 +319,36 @@ int32_t dndProcessDropSnodeReq(SDnode *pDnode, SRpcMsg *pReq) {
   }
 }
 
-static void dndProcessSnodeQueue(SDnode *pDnode, SRpcMsg *pMsg) {
+static void dndProcessSnodeUniqueQueue(SDnode *pDnode, STaosQall *qall, int32_t numOfMsgs) {
   SSnodeMgmt *pMgmt = &pDnode->smgmt;
-  SRpcMsg    *pRsp = NULL;
   int32_t     code = TSDB_CODE_DND_SNODE_NOT_DEPLOYED;
 
   SSnode *pSnode = dndAcquireSnode(pDnode);
   if (pSnode != NULL) {
-    code = sndProcessMsg(pSnode, pMsg, &pRsp);
+    for (int32_t i = 0; i < numOfMsgs; i++) {
+      SRpcMsg *pMsg = NULL;
+      taosGetQitem(qall, (void **)&pMsg);
+
+      sndProcessUMsg(pSnode, pMsg);
+
+      rpcFreeCont(pMsg->pCont);
+      taosFreeQitem(pMsg);
+    }
   }
   dndReleaseSnode(pDnode, pSnode);
+}
 
+static void dndProcessSnodeSharedQueue(SDnode *pDnode, SRpcMsg *pMsg) {
+  SSnodeMgmt *pMgmt = &pDnode->smgmt;
+  int32_t     code = TSDB_CODE_DND_SNODE_NOT_DEPLOYED;
+
+  SSnode *pSnode = dndAcquireSnode(pDnode);
+  if (pSnode != NULL) {
+    code = sndProcessSMsg(pSnode, pMsg);
+  }
+  dndReleaseSnode(pDnode, pSnode);
+
+#if 0
   if (pMsg->msgType & 1u) {
     if (pRsp != NULL) {
       pRsp->ahandle = pMsg->ahandle;
@@ -314,11 +360,32 @@ static void dndProcessSnodeQueue(SDnode *pDnode, SRpcMsg *pMsg) {
       rpcSendResponse(&rpcRsp);
     }
   }
+#endif
 
   rpcFreeCont(pMsg->pCont);
   taosFreeQitem(pMsg);
 }
 
+static void dndWriteSnodeMsgToRandomWorker(SDnode *pDnode, SRpcMsg *pMsg) {
+  int32_t code = TSDB_CODE_DND_SNODE_NOT_DEPLOYED;
+
+  SSnode *pSnode = dndAcquireSnode(pDnode);
+  if (pSnode != NULL) {
+    int32_t       index = (pDnode->smgmt.uniqueWorkerInUse + 1) % taosArrayGetSize(pDnode->smgmt.uniqueWorkers);
+    SDnodeWorker *pWorker = taosArrayGet(pDnode->smgmt.uniqueWorkers, index);
+    code = dndWriteMsgToWorker(pWorker, pMsg, sizeof(SRpcMsg));
+  }
+  dndReleaseSnode(pDnode, pSnode);
+
+  if (code != 0) {
+    if (pMsg->msgType & 1u) {
+      SRpcMsg rsp = {.handle = pMsg->handle, .ahandle = pMsg->ahandle, .code = code};
+      rpcSendResponse(&rsp);
+    }
+    rpcFreeCont(pMsg->pCont);
+  }
+}
+
 static void dndWriteSnodeMsgToWorker(SDnode *pDnode, SDnodeWorker *pWorker, SRpcMsg *pMsg) {
   int32_t code = TSDB_CODE_DND_SNODE_NOT_DEPLOYED;
 
@@ -337,8 +404,13 @@ static void dndWriteSnodeMsgToWorker(SDnode *pDnode, SDnodeWorker *pWorker, SRpc
   }
 }
 
-void dndProcessSnodeWriteMsg(SDnode *pDnode, SRpcMsg *pMsg, SEpSet *pEpSet) {
-  dndWriteSnodeMsgToWorker(pDnode, &pDnode->smgmt.writeWorker, pMsg);
+void dndProcessSnodeUniqueMsg(SDnode *pDnode, SRpcMsg *pMsg, SEpSet *pEpSet) {
+  // judge from msg to write to unique queue
+  dndWriteSnodeMsgToRandomWorker(pDnode, pMsg);
+}
+
+void dndProcessSnodeSharedMsg(SDnode *pDnode, SRpcMsg *pMsg, SEpSet *pEpSet) {
+  dndWriteSnodeMsgToWorker(pDnode, &pDnode->smgmt.sharedWorker, pMsg);
 }
 
 int32_t dndInitSnode(SDnode *pDnode) {
diff --git a/source/dnode/mgmt/impl/src/dndWorker.c b/source/dnode/mgmt/impl/src/dndWorker.c
index 5ccf6640c04789911932a1aabd2717f7efd3762a..38f8737b2bbbc0796a98688498eeab7d44cdef76 100644
--- a/source/dnode/mgmt/impl/src/dndWorker.c
+++ b/source/dnode/mgmt/impl/src/dndWorker.c
@@ -109,4 +109,4 @@ int32_t dndWriteMsgToWorker(SDnodeWorker *pWorker, void *pCont, int32_t contLen)
   }
 
   return 0;
-}
\ No newline at end of file
+}
diff --git a/source/dnode/snode/src/snode.c b/source/dnode/snode/src/snode.c
index 01500fbc54a19a01559005c313fbcdb40970ebcb..91008dd03ac8847b8a29d84b5324ece3cbb9c5c1 100644
--- a/source/dnode/snode/src/snode.c
+++ b/source/dnode/snode/src/snode.c
@@ -31,3 +31,15 @@ int32_t sndProcessMsg(SSnode *pSnode, SRpcMsg *pMsg, SRpcMsg **pRsp) {
 }
 
 void sndDestroy(const char *path) {}
+
+int32_t sndProcessUMsg(SSnode *pSnode, SRpcMsg *pMsg) {
+  // stream deployment
+  // stream stop/resume
+  // operator exec
+  return 0;
+}
+
+int32_t sndProcessSMsg(SSnode *pSnode, SRpcMsg *pMsg) {
+  // operator exec
+  return 0;
+}
diff --git a/source/dnode/vnode/src/tq/tqRead.c b/source/dnode/vnode/src/tq/tqRead.c
index 92a111298fa093699dd75cbadec5846d11fefa44..a2342ec85aa066fab1bcbd2f7e93953151711508 100644
--- a/source/dnode/vnode/src/tq/tqRead.c
+++ b/source/dnode/vnode/src/tq/tqRead.c
@@ -83,8 +83,8 @@ bool tqNextDataBlock(STqReadHandle* pHandle) {
 }
 
 int tqRetrieveDataBlockInfo(STqReadHandle* pHandle, SDataBlockInfo* pBlockInfo) {
-  /*int32_t         sversion = pHandle->pBlock->sversion;*/
-  /*SSchemaWrapper* pSchema = metaGetTableSchema(pHandle->pMeta, pHandle->pBlock->uid, sversion, false);*/
+  // currently only rows are used
+
   pBlockInfo->numOfCols = taosArrayGetSize(pHandle->pColIdList);
   pBlockInfo->rows = pHandle->pBlock->numOfRows;
   pBlockInfo->uid = pHandle->pBlock->uid;
diff --git a/source/util/src/tworker.c b/source/util/src/tworker.c
index 1657a85ee8c85ffc70e088ba307cdb37d4873417..1fa70da870ffd9fe33fb24cfff9b6f3f48115154 100644
--- a/source/util/src/tworker.c
+++ b/source/util/src/tworker.c
@@ -188,7 +188,7 @@ void tFWorkerFreeQueue(SFWorkerPool *pool, STaosQueue *queue) { tQWorkerFreeQueu
 
 int32_t tWWorkerInit(SWWorkerPool *pool) {
   pool->nextId = 0;
-  pool->workers = calloc(sizeof(SWWorker), pool->max);
+  pool->workers = calloc(pool->max, sizeof(SWWorker));
   if (pool->workers == NULL) {
     terrno = TSDB_CODE_OUT_OF_MEMORY;
     return -1;