diff --git a/include/common/tmsgdef.h b/include/common/tmsgdef.h
index 455898585aaec2935d72aab0cdf6dfab6a0aac48..bf683fc9ac4f9f5c2d7b3ad82f6fe1f9a213432b 100644
--- a/include/common/tmsgdef.h
+++ b/include/common/tmsgdef.h
@@ -158,6 +158,8 @@ enum {
   TD_DEF_MSG_TYPE(TDMT_MND_DROP_INDEX, "mnode-drop-index", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_MND_GET_DB_CFG, "mnode-get-db-cfg", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_MND_GET_INDEX, "mnode-get-index", NULL, NULL)
+  
+  TD_DEF_MSG_TYPE(TDMT_MND_APPLY_MSG, "mnode-apply-msg", NULL, NULL)
 
   // Requests handled by VNODE
   TD_NEW_MSG_SEG(TDMT_VND_MSG)
diff --git a/include/dnode/mnode/mnode.h b/include/dnode/mnode/mnode.h
index 28c470a4437d46cdaf213d857e51c6e67108d1d4..16cb4cdd7012aac6145b6c5d0c7319efdfeb60ec 100644
--- a/include/dnode/mnode/mnode.h
+++ b/include/dnode/mnode/mnode.h
@@ -90,6 +90,9 @@ int32_t mndGetLoad(SMnode *pMnode, SMnodeLoad *pLoad);
  */
 int32_t mndProcessMsg(SRpcMsg *pMsg);
 
+
+int32_t mndProcessApplyMsg(SRpcMsg *pMsg);
+
 /**
  * @brief Generate machine code
  */
diff --git a/source/dnode/mgmt/mgmt_mnode/inc/mmInt.h b/source/dnode/mgmt/mgmt_mnode/inc/mmInt.h
index 75e83d65471fdebfba4fdbfa3083a2dc02f7fd22..380ae63b8d3cb490576e7b05497df0b38f1695b9 100644
--- a/source/dnode/mgmt/mgmt_mnode/inc/mmInt.h
+++ b/source/dnode/mgmt/mgmt_mnode/inc/mmInt.h
@@ -33,6 +33,7 @@ typedef struct SMnodeMgmt {
   SSingleWorker readWorker;
   SSingleWorker writeWorker;
   SSingleWorker syncWorker;
+  SSingleWorker applyWorker;
   SSingleWorker monitorWorker;
   SReplica      replicas[TSDB_MAX_REPLICA];
   int8_t        replica;
@@ -59,6 +60,7 @@ int32_t mmStartWorker(SMnodeMgmt *pMgmt);
 void    mmStopWorker(SMnodeMgmt *pMgmt);
 int32_t mmPutNodeMsgToWriteQueue(SMnodeMgmt *pMgmt, SRpcMsg *pMsg);
 int32_t mmPutNodeMsgToSyncQueue(SMnodeMgmt *pMgmt, SRpcMsg *pMsg);
+int32_t mmPutNodeMsgToApplyQueue(SMnodeMgmt *pMgmt, SRpcMsg *pMsg);
 int32_t mmPutNodeMsgToReadQueue(SMnodeMgmt *pMgmt, SRpcMsg *pMsg);
 int32_t mmPutNodeMsgToQueryQueue(SMnodeMgmt *pMgmt, SRpcMsg *pMsg);
 int32_t mmPutNodeMsgToMonitorQueue(SMnodeMgmt *pMgmt, SRpcMsg *pMsg);
diff --git a/source/dnode/mgmt/mgmt_mnode/src/mmInt.c b/source/dnode/mgmt/mgmt_mnode/src/mmInt.c
index 4f7fd4a1c0c925093b3773e06b9dfba1718ce945..68b2889278a96348d3c9395e4488f568edfd53a7 100644
--- a/source/dnode/mgmt/mgmt_mnode/src/mmInt.c
+++ b/source/dnode/mgmt/mgmt_mnode/src/mmInt.c
@@ -122,6 +122,11 @@ static int32_t mmOpen(SMgmtInputOpt *pInput, SMgmtOutputOpt *pOutput) {
     return -1;
   }
 
+  if (syncInit() != 0) {
+    dError("failed to init sync since %s", terrstr());
+    return -1;
+  }
+
   SMnodeMgmt *pMgmt = taosMemoryCalloc(1, sizeof(SMnodeMgmt));
   if (pMgmt == NULL) {
     terrno = TSDB_CODE_OUT_OF_MEMORY;
diff --git a/source/dnode/mgmt/mgmt_mnode/src/mmWorker.c b/source/dnode/mgmt/mgmt_mnode/src/mmWorker.c
index c4314a57b15ebc18df872261296911cc62ed07bc..04fe891ce9a9001062569a7d32f1ad8f2f53d8f9 100644
--- a/source/dnode/mgmt/mgmt_mnode/src/mmWorker.c
+++ b/source/dnode/mgmt/mgmt_mnode/src/mmWorker.c
@@ -56,6 +56,32 @@ static void mmProcessQueue(SQueueInfo *pInfo, SRpcMsg *pMsg) {
   taosFreeQitem(pMsg);
 }
 
+
+static void mmProcessApplyQueue(SQueueInfo *pInfo, SRpcMsg *pMsg) {
+  SMnodeMgmt *pMgmt = pInfo->ahandle;
+  int32_t     code = -1;
+  tmsg_t      msgType = pMsg->msgType;
+  bool        isRequest = msgType & 1U;
+  dTrace("msg:%p, get from mnode-query queue", pMsg);
+
+  pMsg->info.node = pMgmt->pMnode;
+  
+  mndProcessApplyMsg(pMsg);
+
+  /*
+  if (isRequest) {
+    if (pMsg->info.handle != NULL && code != 0) {
+      if (code != 0 && terrno != 0) code = terrno;
+      mmSendRsp(pMsg, code);
+    }
+  }
+  */
+
+  dTrace("msg:%p, is freed, code:0x%x", pMsg, code);
+  rpcFreeCont(pMsg->pCont);
+  taosFreeQitem(pMsg);
+}
+
 static void mmProcessQueryQueue(SQueueInfo *pInfo, SRpcMsg *pMsg) {
   SMnodeMgmt *pMgmt = pInfo->ahandle;
   int32_t     code = -1;
@@ -92,6 +118,10 @@ int32_t mmPutNodeMsgToSyncQueue(SMnodeMgmt *pMgmt, SRpcMsg *pMsg) {
   return mmPutNodeMsgToWorker(&pMgmt->syncWorker, pMsg);
 }
 
+int32_t mmPutNodeMsgToApplyQueue(SMnodeMgmt *pMgmt, SRpcMsg *pMsg) {
+  return mmPutNodeMsgToWorker(&pMgmt->applyWorker, pMsg);
+}
+
 int32_t mmPutNodeMsgToReadQueue(SMnodeMgmt *pMgmt, SRpcMsg *pMsg) {
   return mmPutNodeMsgToWorker(&pMgmt->readWorker, pMsg);
 }
@@ -179,6 +209,18 @@ int32_t mmStartWorker(SMnodeMgmt *pMgmt) {
     return -1;
   }
 
+  SSingleWorkerCfg aCfg = {
+      .min = 1,
+      .max = 1,
+      .name = "mnode-apply",
+      .fp = (FItem)mmProcessApplyQueue,
+      .param = pMgmt,
+  };
+  if (tSingleWorkerInit(&pMgmt->applyWorker, &aCfg) != 0) {
+    dError("failed to start mnode mnode-apply worker since %s", terrstr());
+    return -1;
+  }
+
   SSingleWorkerCfg mCfg = {
       .min = 1,
       .max = 1,
diff --git a/source/dnode/mnode/impl/inc/mndInt.h b/source/dnode/mnode/impl/inc/mndInt.h
index 5258fa9e023a49e3fdf4ea41b2785d3ed93a27a8..0982096d254b12c39a68c7d547774502af850622 100644
--- a/source/dnode/mnode/impl/inc/mndInt.h
+++ b/source/dnode/mnode/impl/inc/mndInt.h
@@ -75,7 +75,9 @@ typedef struct {
   int32_t    errCode;
   sem_t      syncSem;
   SWal      *pWal;
-  SSyncNode *pSyncNode;
+  //SSyncNode *pSyncNode;
+  int64_t  sync;
+
   ESyncState state;
 } SSyncMgmt;
 
diff --git a/source/dnode/mnode/impl/src/mndSync.c b/source/dnode/mnode/impl/src/mndSync.c
index 3dbe3241a78f617a99148f8c571189eea41e17b5..e7144f5673ef46fe0c9c08cb8c5c0274c07e3578 100644
--- a/source/dnode/mnode/impl/src/mndSync.c
+++ b/source/dnode/mnode/impl/src/mndSync.c
@@ -46,6 +46,12 @@ static void mndCloseWal(SMnode *pMnode) {
 }
 
 static int32_t mndRestoreWal(SMnode *pMnode) {
+
+// do nothing
+return 0;
+
+#if 0
+
   SWal   *pWal = pMnode->syncMgmt.pWal;
   SSdb   *pSdb = pMnode->pSdb;
   int64_t lastSdbVer = sdbUpdateVer(pSdb, 0);
@@ -114,6 +120,70 @@ static int32_t mndRestoreWal(SMnode *pMnode) {
 _OVER:
   walCloseReadHandle(pHandle);
   return code;
+
+#endif
+
+}
+
+int32_t mndSyncEqMsg(const SMsgCb* msgcb, SRpcMsg *pMsg) {
+  int32_t ret = 0;
+  if (msgcb->queueFps[SYNC_QUEUE] != NULL) {
+    tmsgPutToQueue(msgcb, SYNC_QUEUE, pMsg);
+  } else {
+    mError("mndSyncEqMsg queue is NULL, SYNC_QUEUE:%d", SYNC_QUEUE);
+  }
+  return ret;
+}
+
+int32_t mndSendMsg(const SEpSet *pEpSet, SRpcMsg *pMsg) {
+  int32_t ret = 0;
+  pMsg->info.noResp = 1;
+  tmsgSendReq(pEpSet, pMsg);
+  return ret;
+}
+
+void mndSyncCommitCb(struct SSyncFSM *pFsm, const SRpcMsg *pMsg, SFsmCbMeta cbMeta) {
+  SyncIndex beginIndex = SYNC_INDEX_INVALID;
+  if (pFsm->FpGetSnapshot != NULL) {
+    SSnapshot snapshot;
+    pFsm->FpGetSnapshot(pFsm, &snapshot);
+    beginIndex = snapshot.lastApplyIndex;
+  }
+
+  if (cbMeta.index > beginIndex) {
+    SMnode    *pMnode = pFsm->data;
+    SSyncMgmt *pMgmt = &pMnode->syncMgmt;
+
+    mndProcessApplyMsg((SRpcMsg*)pMsg);
+    //mmPutNodeMsgToApplyQueue(pMnode->pWrapper->pMgmt, pMsg);
+
+    if (cbMeta.state == TAOS_SYNC_STATE_LEADER) {
+      tsem_post(&pMgmt->syncSem);
+    }
+  }
+}
+
+void mndSyncPreCommitCb(struct SSyncFSM *pFsm, const SRpcMsg *pMsg, SFsmCbMeta cbMeta) {
+  // strict consistent, do nothing
+}
+
+void mndSyncRollBackCb(struct SSyncFSM *pFsm, const SRpcMsg *pMsg, SFsmCbMeta cbMeta) {
+  // strict consistent, do nothing
+}
+
+int32_t mndSyncGetSnapshotCb(struct SSyncFSM *pFsm, SSnapshot *pSnapshot) {
+  // snapshot
+  return 0;
+}
+
+SSyncFSM *syncMnodeMakeFsm(SMnode *pMnode) {
+  SSyncFSM *pFsm = (SSyncFSM *)taosMemoryMalloc(sizeof(SSyncFSM));
+  pFsm->data = pMnode;
+  pFsm->FpCommitCb = mndSyncCommitCb;
+  pFsm->FpPreCommitCb = mndSyncPreCommitCb;
+  pFsm->FpRollBackCb = mndSyncRollBackCb;
+  pFsm->FpGetSnapshot = mndSyncGetSnapshotCb;
+  return pFsm;
 }
 
 int32_t mndInitSync(SMnode *pMnode) {
@@ -133,7 +203,27 @@ int32_t mndInitSync(SMnode *pMnode) {
   if (pMnode->selfId == 1) {
     pMgmt->state = TAOS_SYNC_STATE_LEADER;
   }
-  pMgmt->pSyncNode = NULL;
+  
+  // pMgmt->pSyncNode = NULL;
+  SSyncInfo syncInfo;
+  syncInfo.vgId = 1;
+  SSyncCfg *pCfg = &(syncInfo.syncCfg);
+  pCfg->replicaNum = pMnode->replica;
+  pCfg->myIndex = pMnode->selfIndex;
+  for (int i = 0; i < pMnode->replica; ++i) {
+    snprintf((pCfg->nodeInfo)->nodeFqdn, sizeof((pCfg->nodeInfo)->nodeFqdn), "%s", (pMnode->replicas)[i].fqdn);
+    (pCfg->nodeInfo)->nodePort = (pMnode->replicas)[i].port;
+  }
+  snprintf(syncInfo.path, sizeof(syncInfo.path), "%s/sync", pMnode->path);
+  syncInfo.pWal = pMnode->syncMgmt.pWal;
+
+  syncInfo.pFsm = syncMnodeMakeFsm(pMnode);
+  syncInfo.FpSendMsg = mndSendMsg;
+  syncInfo.FpEqMsg = mndSyncEqMsg;
+
+  pMnode->syncMgmt.sync = syncOpen(&syncInfo);
+  ASSERT(pMnode->syncMgmt.sync > 0);
+
   return 0;
 }
 
@@ -157,6 +247,7 @@ int32_t mndSyncPropose(SMnode *pMnode, SSdbRaw *pRaw) {
   SWal *pWal = pMnode->syncMgmt.pWal;
   SSdb *pSdb = pMnode->pSdb;
 
+#if 0
   int64_t ver = sdbUpdateVer(pSdb, 1);
   if (walWrite(pWal, ver, 1, pRaw, sdbGetRawTotalSize(pRaw)) < 0) {
     sdbUpdateVer(pSdb, -1);
@@ -168,24 +259,32 @@ int32_t mndSyncPropose(SMnode *pMnode, SSdbRaw *pRaw) {
   walCommit(pWal, ver);
   walFsync(pWal, true);
 
-#if 1
   return 0;
+
 #else
+
   if (pMnode->replica == 1) return 0;
 
   SSyncMgmt *pMgmt = &pMnode->syncMgmt;
   pMgmt->errCode = 0;
 
-  SSyncBuffer buf = {.data = pRaw, .len = sdbGetRawTotalSize(pRaw)};
+  //SSyncBuffer buf = {.data = pRaw, .len = sdbGetRawTotalSize(pRaw)};
+
+  SRpcMsg rpcMsg;
+  rpcMsg.code = TDMT_MND_APPLY_MSG;
+  rpcMsg.contLen = sdbGetRawTotalSize(pRaw);
+  rpcMsg.pCont = rpcMallocCont(rpcMsg.contLen);
+  memcpy(rpcMsg.pCont, pRaw, rpcMsg.contLen);
 
   bool    isWeak = false;
-  int32_t code = syncPropose(pMgmt->pSyncNode, &buf, pMnode, isWeak);
+  int32_t code = syncPropose(pMgmt->sync, &rpcMsg, isWeak);
 
   if (code != 0) return code;
 
   tsem_wait(&pMgmt->syncSem);
   return pMgmt->errCode;
 #endif
+
 }
 
 bool mndIsMaster(SMnode *pMnode) {
diff --git a/source/dnode/mnode/impl/src/mndTrans.c b/source/dnode/mnode/impl/src/mndTrans.c
index 35ecaa748ecdbdce486814f063b7678004f68909..f4fa4beaf17a8b8303915a2fa0101c47cbde9076 100644
--- a/source/dnode/mnode/impl/src/mndTrans.c
+++ b/source/dnode/mnode/impl/src/mndTrans.c
@@ -683,11 +683,14 @@ static int32_t mndTransSync(SMnode *pMnode, STrans *pTrans) {
 
   mDebug("trans:%d, sync finished", pTrans->id);
 
-  code = sdbWrite(pMnode->pSdb, pRaw);
+// do it in state machine commit cb
+#if 0
+  code = sdbWriteWithout(pMnode->pSdb, pRaw);
   if (code != 0) {
     mError("trans:%d, failed to write sdb since %s", pTrans->id, terrstr());
     return -1;
   }
+#endif
 
   return 0;
 }
diff --git a/source/dnode/mnode/impl/src/mnode.c b/source/dnode/mnode/impl/src/mnode.c
index 8c805dd8c705d41f62a5728c8bf978d0f30924d5..f8e5a65f0f9983f44232451e8874fff7fc9ab1b3 100644
--- a/source/dnode/mnode/impl/src/mnode.c
+++ b/source/dnode/mnode/impl/src/mnode.c
@@ -336,9 +336,25 @@ int32_t mndAlter(SMnode *pMnode, const SMnodeOpt *pOption) {
   return 0;
 }
 
-int32_t mndStart(SMnode *pMnode) { return mndInitTimer(pMnode); }
+int32_t mndStart(SMnode *pMnode) { 
+  syncStart(pMnode->syncMgmt.sync); 
+  return mndInitTimer(pMnode);
+}
+
+void mndStop(SMnode *pMnode) { 
+  syncStop(pMnode->syncMgmt.sync); 
+  return mndCleanupTimer(pMnode); 
+}
+
+int32_t mndProcessApplyMsg(SRpcMsg *pMsg) {
 
-void mndStop(SMnode *pMnode) { return mndCleanupTimer(pMnode); }
+  SSdbRaw *pRaw = pMsg->pCont;
+  SMnode *pMnode = pMsg->info.node;
+  int32_t code = sdbWriteWithoutFree(pMnode->pSdb, pRaw);
+  rpcFreeCont(pMsg->pCont);
+
+  return code;
+}
 
 int32_t mndProcessMsg(SRpcMsg *pMsg) {
   SMnode *pMnode = pMsg->info.node;
diff --git a/source/libs/sync/src/syncMain.c b/source/libs/sync/src/syncMain.c
index d9ff60bbe22b573db34331e5aabbd04b06ff5616..9c02b91ef0043eb899493e1b9d4706eff430bb55 100644
--- a/source/libs/sync/src/syncMain.c
+++ b/source/libs/sync/src/syncMain.c
@@ -55,14 +55,17 @@ static void syncFreeNode(void* param);
 // ---------------------------------
 
 int32_t syncInit() {
-  int32_t ret;
-  tsNodeRefId = taosOpenRef(200, syncFreeNode);
-  if (tsNodeRefId < 0) {
-    sError("failed to init node ref");
-    syncCleanUp();
-    ret = -1;
-  } else {
-    ret = syncEnvStart();
+  int32_t ret = 0;
+
+  if (!syncEnvIsStart()) {
+    tsNodeRefId = taosOpenRef(200, syncFreeNode);
+    if (tsNodeRefId < 0) {
+      sError("failed to init node ref");
+      syncCleanUp();
+      ret = -1;
+    } else {
+      ret = syncEnvStart();
+    }
   }
 
   return ret;