diff --git a/docs/en/14-reference/03-connector/rust.mdx b/docs/en/14-reference/03-connector/rust.mdx
index a5cbaeac80..56ca586c7e 100644
--- a/docs/en/14-reference/03-connector/rust.mdx
+++ b/docs/en/14-reference/03-connector/rust.mdx
@@ -250,7 +250,7 @@ The [Taos] structure is the connection manager in [libtaos] and provides two mai
 
     Column information is stored using [ColumnMeta].
 
-    ``rust
+    ```rust
     let cols = &q.column_meta;
     for col in cols {
         println!("name: {}, type: {:?} , bytes: {}", col.name, col.type_, col.bytes);
diff --git a/include/libs/sync/sync.h b/include/libs/sync/sync.h
index fc9d419b1f..f49030466e 100644
--- a/include/libs/sync/sync.h
+++ b/include/libs/sync/sync.h
@@ -192,6 +192,7 @@ bool        syncEnvIsStart();
 const char* syncStr(ESyncState state);
 bool        syncIsRestoreFinish(int64_t rid);
 int32_t     syncGetSnapshotMeta(int64_t rid, struct SSnapshotMeta* sMeta);
+int32_t     syncGetSnapshotMetaByIndex(int64_t rid, SyncIndex snapshotIndex, struct SSnapshotMeta* sMeta);
 
 int32_t syncReconfig(int64_t rid, const SSyncCfg* pNewCfg);
 
diff --git a/include/libs/transport/trpc.h b/include/libs/transport/trpc.h
index fd57eef83a..e3db1550a0 100644
--- a/include/libs/transport/trpc.h
+++ b/include/libs/transport/trpc.h
@@ -46,7 +46,6 @@ typedef struct SRpcHandleInfo {
   int32_t noResp;         // has response or not(default 0, 0: resp, 1: no resp);
   int32_t persistHandle;  // persist handle or not
 
-  SRpcConnInfo connInfo;
   // app info
   void *ahandle;  // app handle set by client
   void *wrapper;  // wrapper handle
@@ -55,6 +54,9 @@ typedef struct SRpcHandleInfo {
   // resp info
   void *  rsp;
   int32_t rspLen;
+
+  // conn info
+  SRpcConnInfo conn;
 } SRpcHandleInfo;
 
 typedef struct SRpcMsg {
@@ -63,7 +65,6 @@ typedef struct SRpcMsg {
   int32_t        contLen;
   int32_t        code;
   SRpcHandleInfo info;
-  SRpcConnInfo   conn;
 } SRpcMsg;
 
 typedef void (*RpcCfp)(void *parent, SRpcMsg *, SEpSet *rf);
diff --git a/source/common/src/systable.c b/source/common/src/systable.c
index bcc248d122..1552850e76 100644
--- a/source/common/src/systable.c
+++ b/source/common/src/systable.c
@@ -220,7 +220,8 @@ static const SSysDbTableSchema transSchema[] = {
     {.name = "id", .bytes = 4, .type = TSDB_DATA_TYPE_INT},
     {.name = "create_time", .bytes = 8, .type = TSDB_DATA_TYPE_TIMESTAMP},
     {.name = "stage", .bytes = TSDB_TRANS_STAGE_LEN + VARSTR_HEADER_SIZE, .type = TSDB_DATA_TYPE_VARCHAR},
-    {.name = "db", .bytes = SYSTABLE_SCH_DB_NAME_LEN, .type = TSDB_DATA_TYPE_VARCHAR},
+    {.name = "db1", .bytes = SYSTABLE_SCH_DB_NAME_LEN, .type = TSDB_DATA_TYPE_VARCHAR},
+    {.name = "db2", .bytes = SYSTABLE_SCH_DB_NAME_LEN, .type = TSDB_DATA_TYPE_VARCHAR},
     {.name = "failed_times", .bytes = 4, .type = TSDB_DATA_TYPE_INT},
     {.name = "last_exec_time", .bytes = 8, .type = TSDB_DATA_TYPE_TIMESTAMP},
     {.name = "last_action_info",
diff --git a/source/dnode/mgmt/mgmt_vnode/src/vmHandle.c b/source/dnode/mgmt/mgmt_vnode/src/vmHandle.c
index 9946185da6..f112727c08 100644
--- a/source/dnode/mgmt/mgmt_vnode/src/vmHandle.c
+++ b/source/dnode/mgmt/mgmt_vnode/src/vmHandle.c
@@ -228,7 +228,7 @@ int32_t vmProcessCreateVnodeReq(SVnodeMgmt *pMgmt, SRpcMsg *pMsg) {
     vmReleaseVnode(pMgmt, pVnode);
     terrno = TSDB_CODE_NODE_ALREADY_DEPLOYED;
     code = terrno;
-    goto _OVER;
+    return 0;
   }
 
   snprintf(path, TSDB_FILENAME_LEN, "vnode%svnode%d", TD_DIRSEP, vnodeCfg.vgId);
diff --git a/source/dnode/mgmt/node_mgmt/src/dmTransport.c b/source/dnode/mgmt/node_mgmt/src/dmTransport.c
index b66e559370..13f2452e66 100644
--- a/source/dnode/mgmt/node_mgmt/src/dmTransport.c
+++ b/source/dnode/mgmt/node_mgmt/src/dmTransport.c
@@ -21,21 +21,6 @@ static void dmSendRedirectRsp(SRpcMsg *pMsg, const SEpSet *pNewEpSet);
 static void dmSendRsp(SRpcMsg *pMsg);
 static void dmBuildMnodeRedirectRsp(SDnode *pDnode, SRpcMsg *pMsg);
 
-static inline int32_t dmBuildNodeMsg(SRpcMsg *pMsg, SRpcMsg *pRpc) {
-  SRpcConnInfo *pConnInfo = &(pRpc->info.connInfo);
-  // if (IsReq(pRpc)) {
-  //  terrno = TSDB_CODE_MND_NO_USER_FROM_CONN;
-  //  dError("failed to build msg since %s, app:%p handle:%p", terrstr(), pRpc->info.ahandle, pRpc->info.handle);
-  //  return -1;
-  //}
-
-  memcpy(pMsg, pRpc, sizeof(SRpcMsg));
-  memcpy(pMsg->conn.user, pConnInfo->user, TSDB_USER_LEN);
-  pMsg->conn.clientIp = pConnInfo->clientIp;
-  pMsg->conn.clientPort = pConnInfo->clientPort;
-  return 0;
-}
-
 int32_t dmProcessNodeMsg(SMgmtWrapper *pWrapper, SRpcMsg *pMsg) {
   NodeMsgFp msgFp = pWrapper->msgFps[TMSG_INDEX(pMsg->msgType)];
   if (msgFp == NULL) {
@@ -116,14 +101,10 @@ static void dmProcessRpcMsg(SDnode *pDnode, SRpcMsg *pRpc, SEpSet *pEpSet) {
   }
 
   pMsg = taosAllocateQitem(sizeof(SRpcMsg), RPC_QITEM);
-  if (pMsg == NULL) {
-    goto _OVER;
-  }
-  dTrace("msg:%p, is created, type:%s", pMsg, TMSG_INFO(pRpc->msgType));
+  if (pMsg == NULL) goto _OVER;
+  memcpy(pMsg, pRpc, sizeof(SRpcMsg));
 
-  if (dmBuildNodeMsg(pMsg, pRpc) != 0) {
-    goto _OVER;
-  }
+  dTrace("msg:%p, is created, type:%s handle:%p", pMsg, TMSG_INFO(pRpc->msgType), pMsg->info.handle);
 
   if (InParentProc(pWrapper)) {
     code = dmPutToProcCQueue(&pWrapper->proc, pMsg, DND_FUNC_REQ);
diff --git a/source/dnode/mnode/impl/inc/mndDef.h b/source/dnode/mnode/impl/inc/mndDef.h
index 4daeeaa9bf..8963f6be39 100644
--- a/source/dnode/mnode/impl/inc/mndDef.h
+++ b/source/dnode/mnode/impl/inc/mndDef.h
@@ -124,7 +124,8 @@ typedef struct {
   int32_t        lastErrorNo;
   tmsg_t         lastMsgType;
   SEpSet         lastEpset;
-  char           dbname[TSDB_DB_FNAME_LEN];
+  char           dbname1[TSDB_DB_FNAME_LEN];
+  char           dbname2[TSDB_DB_FNAME_LEN];
   int32_t        startFunc;
   int32_t        stopFunc;
   int32_t        paramLen;
diff --git a/source/dnode/mnode/impl/inc/mndTrans.h b/source/dnode/mnode/impl/inc/mndTrans.h
index 0175e29a77..bc2d5c82b1 100644
--- a/source/dnode/mnode/impl/inc/mndTrans.h
+++ b/source/dnode/mnode/impl/inc/mndTrans.h
@@ -68,7 +68,7 @@ int32_t mndTransAppendRedoAction(STrans *pTrans, STransAction *pAction);
 int32_t mndTransAppendUndoAction(STrans *pTrans, STransAction *pAction);
 void    mndTransSetRpcRsp(STrans *pTrans, void *pCont, int32_t contLen);
 void    mndTransSetCb(STrans *pTrans, ETrnFunc startFunc, ETrnFunc stopFunc, void *param, int32_t paramLen);
-void    mndTransSetDbName(STrans *pTrans, const char *dbname);
+void    mndTransSetDbName(STrans *pTrans, const char *dbname1, const char *dbname2);
 void    mndTransSetSerial(STrans *pTrans);
 
 int32_t mndTransPrepare(SMnode *pMnode, STrans *pTrans);
diff --git a/source/dnode/mnode/impl/src/mndAuth.c b/source/dnode/mnode/impl/src/mndAuth.c
index f036fc48f7..d47fb9dfb4 100644
--- a/source/dnode/mnode/impl/src/mndAuth.c
+++ b/source/dnode/mnode/impl/src/mndAuth.c
@@ -56,7 +56,7 @@ static int32_t mndProcessAuthReq(SRpcMsg *pReq) {
   memcpy(authRsp.user, authReq.user, TSDB_USER_LEN);
 
   int32_t code = mndRetriveAuth(pReq->info.node, &authRsp);
-  mTrace("user:%s, auth req received, spi:%d encrypt:%d ruser:%s", pReq->conn.user, authRsp.spi, authRsp.encrypt,
+  mTrace("user:%s, auth req received, spi:%d encrypt:%d ruser:%s", pReq->info.conn.user, authRsp.spi, authRsp.encrypt,
          authRsp.user);
 
   int32_t contLen = tSerializeSAuthReq(NULL, 0, &authRsp);
diff --git a/source/dnode/mnode/impl/src/mndBnode.c b/source/dnode/mnode/impl/src/mndBnode.c
index aa908b983d..0de40ca671 100644
--- a/source/dnode/mnode/impl/src/mndBnode.c
+++ b/source/dnode/mnode/impl/src/mndBnode.c
@@ -292,7 +292,7 @@ static int32_t mndProcessCreateBnodeReq(SRpcMsg *pReq) {
     goto _OVER;
   }
 
-  if (mndCheckOperAuth(pMnode, pReq->conn.user, MND_OPER_CREATE_BNODE) != 0) {
+  if (mndCheckOperAuth(pMnode, pReq->info.conn.user, MND_OPER_CREATE_BNODE) != 0) {
     goto _OVER;
   }
 
@@ -394,7 +394,7 @@ static int32_t mndProcessDropBnodeReq(SRpcMsg *pReq) {
     goto _OVER;
   }
 
-  if (mndCheckOperAuth(pMnode, pReq->conn.user, MND_OPER_DROP_BNODE) != 0) {
+  if (mndCheckOperAuth(pMnode, pReq->info.conn.user, MND_OPER_DROP_BNODE) != 0) {
     goto _OVER;
   }
 
diff --git a/source/dnode/mnode/impl/src/mndDb.c b/source/dnode/mnode/impl/src/mndDb.c
index c12c6d5b4c..38d6bb2822 100644
--- a/source/dnode/mnode/impl/src/mndDb.c
+++ b/source/dnode/mnode/impl/src/mndDb.c
@@ -477,7 +477,7 @@ static int32_t mndCreateDb(SMnode *pMnode, SRpcMsg *pReq, SCreateDbReq *pCreate,
 
   mDebug("trans:%d, used to create db:%s", pTrans->id, pCreate->db);
 
-  mndTransSetDbName(pTrans, dbObj.name);
+  mndTransSetDbName(pTrans, dbObj.name, NULL);
   if (mndSetCreateDbRedoLogs(pMnode, pTrans, &dbObj, pVgroups) != 0) goto _OVER;
   if (mndSetCreateDbUndoLogs(pMnode, pTrans, &dbObj, pVgroups) != 0) goto _OVER;
   if (mndSetCreateDbCommitLogs(pMnode, pTrans, &dbObj, pVgroups) != 0) goto _OVER;
@@ -521,12 +521,12 @@ static int32_t mndProcessCreateDbReq(SRpcMsg *pReq) {
     goto _OVER;
   }
 
-  pUser = mndAcquireUser(pMnode, pReq->conn.user);
+  pUser = mndAcquireUser(pMnode, pReq->info.conn.user);
   if (pUser == NULL) {
     goto _OVER;
   }
 
-  if (mndCheckDbAuth(pMnode, pReq->conn.user, MND_OPER_CREATE_DB, NULL) != 0) {
+  if (mndCheckDbAuth(pMnode, pReq->info.conn.user, MND_OPER_CREATE_DB, NULL) != 0) {
     goto _OVER;
   }
 
@@ -668,7 +668,7 @@ static int32_t mndAlterDb(SMnode *pMnode, SRpcMsg *pReq, SDbObj *pOld, SDbObj *p
   mDebug("trans:%d, used to alter db:%s", pTrans->id, pOld->name);
 
   int32_t code = -1;
-  mndTransSetDbName(pTrans, pOld->name);
+  mndTransSetDbName(pTrans, pOld->name, NULL);
   if (mndSetAlterDbRedoLogs(pMnode, pTrans, pOld, pNew) != 0) goto _OVER;
   if (mndSetAlterDbCommitLogs(pMnode, pTrans, pOld, pNew) != 0) goto _OVER;
   if (mndSetAlterDbRedoActions(pMnode, pTrans, pOld, pNew) != 0) goto _OVER;
@@ -700,7 +700,7 @@ static int32_t mndProcessAlterDbReq(SRpcMsg *pReq) {
     goto _OVER;
   }
 
-  if (mndCheckDbAuth(pMnode, pReq->conn.user, MND_OPER_ALTER_DB, pDb) != 0) {
+  if (mndCheckDbAuth(pMnode, pReq->info.conn.user, MND_OPER_ALTER_DB, pDb) != 0) {
     goto _OVER;
   }
 
@@ -921,7 +921,7 @@ static int32_t mndDropDb(SMnode *pMnode, SRpcMsg *pReq, SDbObj *pDb) {
   if (pTrans == NULL) goto _OVER;
 
   mDebug("trans:%d, used to drop db:%s", pTrans->id, pDb->name);
-  mndTransSetDbName(pTrans, pDb->name);
+  mndTransSetDbName(pTrans, pDb->name, NULL);
 
   if (mndSetDropDbRedoLogs(pMnode, pTrans, pDb) != 0) goto _OVER;
   if (mndSetDropDbCommitLogs(pMnode, pTrans, pDb) != 0) goto _OVER;
@@ -980,7 +980,7 @@ static int32_t mndProcessDropDbReq(SRpcMsg *pReq) {
     }
   }
 
-  if (mndCheckDbAuth(pMnode, pReq->conn.user, MND_OPER_DROP_DB, pDb) != 0) {
+  if (mndCheckDbAuth(pMnode, pReq->info.conn.user, MND_OPER_DROP_DB, pDb) != 0) {
     goto _OVER;
   }
 
@@ -1127,7 +1127,7 @@ static int32_t mndProcessUseDbReq(SRpcMsg *pReq) {
 
       mError("db:%s, failed to process use db req since %s", usedbReq.db, terrstr());
     } else {
-      if (mndCheckDbAuth(pMnode, pReq->conn.user, MND_OPER_USE_DB, pDb) != 0) {
+      if (mndCheckDbAuth(pMnode, pReq->info.conn.user, MND_OPER_USE_DB, pDb) != 0) {
         goto _OVER;
       }
 
@@ -1252,7 +1252,7 @@ static int32_t mndProcessCompactDbReq(SRpcMsg *pReq) {
     goto _OVER;
   }
 
-  if (mndCheckDbAuth(pMnode, pReq->conn.user, MND_OPER_COMPACT_DB, pDb) != 0) {
+  if (mndCheckDbAuth(pMnode, pReq->info.conn.user, MND_OPER_COMPACT_DB, pDb) != 0) {
     goto _OVER;
   }
 
diff --git a/source/dnode/mnode/impl/src/mndDnode.c b/source/dnode/mnode/impl/src/mndDnode.c
index 6d37143fc9..d1bed90175 100644
--- a/source/dnode/mnode/impl/src/mndDnode.c
+++ b/source/dnode/mnode/impl/src/mndDnode.c
@@ -522,7 +522,7 @@ static int32_t mndProcessCreateDnodeReq(SRpcMsg *pReq) {
     goto _OVER;
   }
 
-  if (mndCheckOperAuth(pMnode, pReq->conn.user, MND_OPER_CREATE_DNODE) != 0) {
+  if (mndCheckOperAuth(pMnode, pReq->info.conn.user, MND_OPER_CREATE_DNODE) != 0) {
     goto _OVER;
   }
 
@@ -623,7 +623,7 @@ static int32_t mndProcessDropDnodeReq(SRpcMsg *pReq) {
     }
   }
 
-  if (mndCheckOperAuth(pMnode, pReq->conn.user, MND_OPER_DROP_MNODE) != 0) {
+  if (mndCheckOperAuth(pMnode, pReq->info.conn.user, MND_OPER_DROP_MNODE) != 0) {
     goto _OVER;
   }
 
diff --git a/source/dnode/mnode/impl/src/mndFunc.c b/source/dnode/mnode/impl/src/mndFunc.c
index dfdc0a3c1a..832f1b8e68 100644
--- a/source/dnode/mnode/impl/src/mndFunc.c
+++ b/source/dnode/mnode/impl/src/mndFunc.c
@@ -318,7 +318,7 @@ static int32_t mndProcessCreateFuncReq(SRpcMsg *pReq) {
     goto _OVER;
   }
 
-  if (mndCheckOperAuth(pMnode, pReq->conn.user, MND_OPER_CREATE_FUNC) != 0) {
+  if (mndCheckOperAuth(pMnode, pReq->info.conn.user, MND_OPER_CREATE_FUNC) != 0) {
     goto _OVER;
   }
 
@@ -365,7 +365,7 @@ static int32_t mndProcessDropFuncReq(SRpcMsg *pReq) {
     }
   }
 
-  if (mndCheckOperAuth(pMnode, pReq->conn.user, MND_OPER_DROP_FUNC) != 0) {
+  if (mndCheckOperAuth(pMnode, pReq->info.conn.user, MND_OPER_DROP_FUNC) != 0) {
     goto _OVER;
   }
 
diff --git a/source/dnode/mnode/impl/src/mndMain.c b/source/dnode/mnode/impl/src/mndMain.c
index f277a5169d..7b5025a986 100644
--- a/source/dnode/mnode/impl/src/mndMain.c
+++ b/source/dnode/mnode/impl/src/mndMain.c
@@ -505,6 +505,7 @@ int32_t mndProcessSyncMsg(SRpcMsg *pMsg) {
 }
 
 static int32_t mndCheckMnodeState(SRpcMsg *pMsg) {
+  if (!IsReq(pMsg)) return 0;
   if (mndAcquireRpcRef(pMsg->info.node) == 0) return 0;
 
   if (IsReq(pMsg) && pMsg->msgType != TDMT_MND_MQ_TIMER && pMsg->msgType != TDMT_MND_TELEM_TIMER &&
diff --git a/source/dnode/mnode/impl/src/mndMnode.c b/source/dnode/mnode/impl/src/mndMnode.c
index e82c479cdd..b40cd713e5 100644
--- a/source/dnode/mnode/impl/src/mndMnode.c
+++ b/source/dnode/mnode/impl/src/mndMnode.c
@@ -414,7 +414,7 @@ static int32_t mndProcessCreateMnodeReq(SRpcMsg *pReq) {
     goto _OVER;
   }
 
-  if (mndCheckOperAuth(pMnode, pReq->conn.user, MND_OPER_CREATE_MNODE) != 0) {
+  if (mndCheckOperAuth(pMnode, pReq->info.conn.user, MND_OPER_CREATE_MNODE) != 0) {
     goto _OVER;
   }
 
@@ -621,7 +621,7 @@ static int32_t mndProcessDropMnodeReq(SRpcMsg *pReq) {
     goto _OVER;
   }
 
-  if (mndCheckOperAuth(pMnode, pReq->conn.user, MND_OPER_DROP_MNODE) != 0) {
+  if (mndCheckOperAuth(pMnode, pReq->info.conn.user, MND_OPER_DROP_MNODE) != 0) {
     goto _OVER;
   }
 
@@ -742,7 +742,7 @@ static int32_t mndProcessAlterMnodeReq(SRpcMsg *pReq) {
     pMgmt->errCode = 0;
     pMgmt->transId = -1;
     tsem_wait(&pMgmt->syncSem);
-    mInfo("alter mnode sync result:%s", tstrerror(pMgmt->errCode));
+    mInfo("alter mnode sync result:0x%x %s", pMgmt->errCode, tstrerror(pMgmt->errCode));
     terrno = pMgmt->errCode;
     return pMgmt->errCode;
   }
diff --git a/source/dnode/mnode/impl/src/mndProfile.c b/source/dnode/mnode/impl/src/mndProfile.c
index 20d94e341c..39d21aad49 100644
--- a/source/dnode/mnode/impl/src/mndProfile.c
+++ b/source/dnode/mnode/impl/src/mndProfile.c
@@ -133,7 +133,7 @@ static void mndFreeConn(SConnObj *pConn) {
   taosWLockLatch(&pConn->queryLock);
   taosArrayDestroyEx(pConn->pQueries, tFreeClientHbQueryDesc);
   taosWUnLockLatch(&pConn->queryLock);
-  
+
   mTrace("conn:%u, is destroyed, data:%p", pConn->id, pConn);
 }
 
@@ -194,15 +194,15 @@ static int32_t mndProcessConnectReq(SRpcMsg *pReq) {
     goto CONN_OVER;
   }
 
-  taosIp2String(pReq->conn.clientIp, ip);
+  taosIp2String(pReq->info.conn.clientIp, ip);
 
-  pUser = mndAcquireUser(pMnode, pReq->conn.user);
+  pUser = mndAcquireUser(pMnode, pReq->info.conn.user);
   if (pUser == NULL) {
-    mError("user:%s, failed to login while acquire user since %s", pReq->conn.user, terrstr());
+    mError("user:%s, failed to login while acquire user since %s", pReq->info.conn.user, terrstr());
     goto CONN_OVER;
   }
   if (0 != strncmp(connReq.passwd, pUser->pass, TSDB_PASSWORD_LEN - 1)) {
-    mError("user:%s, failed to auth while acquire user, input:%s", pReq->conn.user, connReq.passwd);
+    mError("user:%s, failed to auth while acquire user, input:%s", pReq->info.conn.user, connReq.passwd);
     code = TSDB_CODE_RPC_AUTH_FAILURE;
     goto CONN_OVER;
   }
@@ -213,15 +213,16 @@ static int32_t mndProcessConnectReq(SRpcMsg *pReq) {
     pDb = mndAcquireDb(pMnode, db);
     if (pDb == NULL) {
       terrno = TSDB_CODE_MND_INVALID_DB;
-      mError("user:%s, failed to login from %s while use db:%s since %s", pReq->conn.user, ip, connReq.db, terrstr());
+      mError("user:%s, failed to login from %s while use db:%s since %s", pReq->info.conn.user, ip, connReq.db,
+             terrstr());
       goto CONN_OVER;
     }
   }
 
-  pConn = mndCreateConn(pMnode, pReq->conn.user, connReq.connType, pReq->conn.clientIp, pReq->conn.clientPort,
-                        connReq.pid, connReq.app, connReq.startTime);
+  pConn = mndCreateConn(pMnode, pReq->info.conn.user, connReq.connType, pReq->info.conn.clientIp,
+                        pReq->info.conn.clientPort, connReq.pid, connReq.app, connReq.startTime);
   if (pConn == NULL) {
-    mError("user:%s, failed to login from %s while create connection since %s", pReq->conn.user, ip, terrstr());
+    mError("user:%s, failed to login from %s while create connection since %s", pReq->info.conn.user, ip, terrstr());
     goto CONN_OVER;
   }
 
@@ -246,7 +247,7 @@ static int32_t mndProcessConnectReq(SRpcMsg *pReq) {
   pReq->info.rspLen = contLen;
   pReq->info.rsp = pRsp;
 
-  mDebug("user:%s, login from %s:%d, conn:%u, app:%s", pReq->conn.user, ip, pConn->port, pConn->id, connReq.app);
+  mDebug("user:%s, login from %s:%d, conn:%u, app:%s", pReq->info.conn.user, ip, pConn->port, pConn->id, connReq.app);
 
   code = 0;
 
@@ -348,7 +349,7 @@ static int32_t mndProcessQueryHeartBeat(SMnode *pMnode, SRpcMsg *pMsg, SClientHb
   if (pHbReq->query) {
     SQueryHbReqBasic *pBasic = pHbReq->query;
 
-    SRpcConnInfo connInfo = pMsg->conn;
+    SRpcConnInfo connInfo = pMsg->info.conn;
 
     SConnObj *pConn = mndAcquireConn(pMnode, pBasic->connId);
     if (pConn == NULL) {
@@ -361,7 +362,7 @@ static int32_t mndProcessQueryHeartBeat(SMnode *pMnode, SRpcMsg *pMsg, SClientHb
         mDebug("user:%s, conn:%u is freed and create a new conn:%u", connInfo.user, pBasic->connId, pConn->id);
       }
     }
-    
+
     SQueryHbRspBasic *rspBasic = taosMemoryCalloc(1, sizeof(SQueryHbRspBasic));
     if (rspBasic == NULL) {
       mndReleaseConn(pMnode, pConn);
@@ -386,7 +387,7 @@ static int32_t mndProcessQueryHeartBeat(SMnode *pMnode, SRpcMsg *pMsg, SClientHb
     mndGetMnodeEpSet(pMnode, &rspBasic->epSet);
 
     mndCreateQnodeList(pMnode, &rspBasic->pQnodeList, -1);
-    
+
     mndReleaseConn(pMnode, pConn);
 
     hbRsp.query = rspBasic;
@@ -500,7 +501,7 @@ static int32_t mndProcessKillQueryReq(SRpcMsg *pReq) {
   SMnode       *pMnode = pReq->info.node;
   SProfileMgmt *pMgmt = &pMnode->profileMgmt;
 
-  SUserObj *pUser = mndAcquireUser(pMnode, pReq->conn.user);
+  SUserObj *pUser = mndAcquireUser(pMnode, pReq->info.conn.user);
   if (pUser == NULL) return 0;
   if (!pUser->superUser) {
     mndReleaseUser(pMnode, pUser);
@@ -523,7 +524,7 @@ static int32_t mndProcessKillQueryReq(SRpcMsg *pReq) {
     terrno = TSDB_CODE_MND_INVALID_CONN_ID;
     return -1;
   } else {
-    mInfo("connId:%d, queryId:%d is killed by user:%s", killReq.connId, killReq.queryId, pReq->conn.user);
+    mInfo("connId:%d, queryId:%d is killed by user:%s", killReq.connId, killReq.queryId, pReq->info.conn.user);
     pConn->killId = killReq.queryId;
     taosCacheRelease(pMgmt->cache, (void **)&pConn, false);
     return 0;
@@ -534,7 +535,7 @@ static int32_t mndProcessKillConnReq(SRpcMsg *pReq) {
   SMnode       *pMnode = pReq->info.node;
   SProfileMgmt *pMgmt = &pMnode->profileMgmt;
 
-  SUserObj *pUser = mndAcquireUser(pMnode, pReq->conn.user);
+  SUserObj *pUser = mndAcquireUser(pMnode, pReq->info.conn.user);
   if (pUser == NULL) return 0;
   if (!pUser->superUser) {
     mndReleaseUser(pMnode, pUser);
@@ -555,7 +556,7 @@ static int32_t mndProcessKillConnReq(SRpcMsg *pReq) {
     terrno = TSDB_CODE_MND_INVALID_CONN_ID;
     return -1;
   } else {
-    mInfo("connId:%d, is killed by user:%s", killReq.connId, pReq->conn.user);
+    mInfo("connId:%d, is killed by user:%s", killReq.connId, pReq->info.conn.user);
     pConn->killed = 1;
     taosCacheRelease(pMgmt->cache, (void **)&pConn, false);
     return TSDB_CODE_SUCCESS;
@@ -563,12 +564,12 @@ static int32_t mndProcessKillConnReq(SRpcMsg *pReq) {
 }
 
 static int32_t mndRetrieveConns(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *pBlock, int32_t rows) {
-  SMnode    *pMnode = pReq->info.node;
-  SSdb      *pSdb = pMnode->pSdb;
-  int32_t    numOfRows = 0;
-  int32_t    cols = 0;
-  SConnObj  *pConn = NULL;
-  
+  SMnode   *pMnode = pReq->info.node;
+  SSdb     *pSdb = pMnode->pSdb;
+  int32_t   numOfRows = 0;
+  int32_t   cols = 0;
+  SConnObj *pConn = NULL;
+
   if (pShow->pIter == NULL) {
     SProfileMgmt *pMgmt = &pMnode->profileMgmt;
     pShow->pIter = taosCacheCreateIter(pMgmt->cache);
@@ -619,12 +620,12 @@ static int32_t mndRetrieveConns(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *pBl
 }
 
 static int32_t mndRetrieveQueries(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *pBlock, int32_t rows) {
-  SMnode    *pMnode = pReq->info.node;
-  SSdb      *pSdb = pMnode->pSdb;
-  int32_t    numOfRows = 0;
-  int32_t    cols = 0;
-  SConnObj  *pConn = NULL;
-  
+  SMnode   *pMnode = pReq->info.node;
+  SSdb     *pSdb = pMnode->pSdb;
+  int32_t   numOfRows = 0;
+  int32_t   cols = 0;
+  SConnObj *pConn = NULL;
+
   if (pShow->pIter == NULL) {
     SProfileMgmt *pMgmt = &pMnode->profileMgmt;
     pShow->pIter = taosCacheCreateIter(pMgmt->cache);
@@ -645,7 +646,7 @@ static int32_t mndRetrieveQueries(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *p
 
     int32_t numOfQueries = taosArrayGetSize(pConn->pQueries);
     for (int32_t i = 0; i < numOfQueries; ++i) {
-      SQueryDesc* pQuery = taosArrayGet(pConn->pQueries, i);
+      SQueryDesc *pQuery = taosArrayGet(pConn->pQueries, i);
       cols = 0;
 
       char queryId[26 + VARSTR_HEADER_SIZE] = {0};
@@ -691,14 +692,14 @@ static int32_t mndRetrieveQueries(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *p
       pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
       colDataAppend(pColInfo, numOfRows, (const char *)&pQuery->subPlanNum, false);
 
-      char subStatus[TSDB_SHOW_SUBQUERY_LEN + VARSTR_HEADER_SIZE] = {0};
+      char    subStatus[TSDB_SHOW_SUBQUERY_LEN + VARSTR_HEADER_SIZE] = {0};
       int32_t strSize = sizeof(subStatus);
       int32_t offset = VARSTR_HEADER_SIZE;
       for (int32_t i = 0; i < pQuery->subPlanNum && offset < strSize; ++i) {
         if (i) {
           offset += snprintf(subStatus + offset, strSize - offset - 1, ",");
         }
-        SQuerySubDesc* pDesc = taosArrayGet(pQuery->subDesc, i);
+        SQuerySubDesc *pDesc = taosArrayGet(pQuery->subDesc, i);
         offset += snprintf(subStatus + offset, strSize - offset - 1, "%" PRIu64 ":%s", pDesc->tid, pDesc->status);
       }
       varDataLen(subStatus) = strlen(&subStatus[VARSTR_HEADER_SIZE]);
@@ -712,7 +713,7 @@ static int32_t mndRetrieveQueries(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *p
 
       numOfRows++;
     }
-    
+
     taosRUnLockLatch(&pConn->queryLock);
   }
 
diff --git a/source/dnode/mnode/impl/src/mndQnode.c b/source/dnode/mnode/impl/src/mndQnode.c
index 595287a3af..f5625f32d5 100644
--- a/source/dnode/mnode/impl/src/mndQnode.c
+++ b/source/dnode/mnode/impl/src/mndQnode.c
@@ -294,7 +294,7 @@ static int32_t mndProcessCreateQnodeReq(SRpcMsg *pReq) {
     goto _OVER;
   }
 
-  if (mndCheckOperAuth(pMnode, pReq->conn.user, MND_OPER_CREATE_QNODE) != 0) {
+  if (mndCheckOperAuth(pMnode, pReq->info.conn.user, MND_OPER_CREATE_QNODE) != 0) {
     goto _OVER;
   }
 
@@ -396,7 +396,7 @@ static int32_t mndProcessDropQnodeReq(SRpcMsg *pReq) {
     goto _OVER;
   }
 
-  if (mndCheckOperAuth(pMnode, pReq->conn.user, MND_OPER_DROP_QNODE) != 0) {
+  if (mndCheckOperAuth(pMnode, pReq->info.conn.user, MND_OPER_DROP_QNODE) != 0) {
     goto _OVER;
   }
 
diff --git a/source/dnode/mnode/impl/src/mndShow.c b/source/dnode/mnode/impl/src/mndShow.c
index d312955202..a6447ed405 100644
--- a/source/dnode/mnode/impl/src/mndShow.c
+++ b/source/dnode/mnode/impl/src/mndShow.c
@@ -229,7 +229,7 @@ static int32_t mndProcessRetrieveSysTableReq(SRpcMsg *pReq) {
 
   mDebug("show:0x%" PRIx64 ", start retrieve data, type:%d", pShow->id, pShow->type);
 
-  // if (mndCheckShowAuth(pMnode, pReq->conn.user, pShow->type) != 0) return -1;
+  // if (mndCheckShowAuth(pMnode, pReq->info.conn.user, pShow->type) != 0) return -1;
 
   int32_t      numOfCols = pShow->pMeta->numOfColumns;
   SSDataBlock *pBlock = taosMemoryCalloc(1, sizeof(SSDataBlock));
diff --git a/source/dnode/mnode/impl/src/mndSma.c b/source/dnode/mnode/impl/src/mndSma.c
index 3eb5b03efd..b6c387a9c8 100644
--- a/source/dnode/mnode/impl/src/mndSma.c
+++ b/source/dnode/mnode/impl/src/mndSma.c
@@ -609,7 +609,7 @@ static int32_t mndCreateSma(SMnode *pMnode, SRpcMsg *pReq, SMCreateSmaReq *pCrea
   int32_t code = -1;
   STrans *pTrans = mndTransCreate(pMnode, TRN_POLICY_RETRY, TRN_CONFLICT_DB, pReq);
   if (pTrans == NULL) goto _OVER;
-  mndTransSetDbName(pTrans, pDb->name);
+  mndTransSetDbName(pTrans, pDb->name, NULL);
   mndTransSetSerial(pTrans);
   mDebug("trans:%d, used to create sma:%s", pTrans->id, pCreate->name);
 
@@ -710,7 +710,7 @@ static int32_t mndProcessCreateSmaReq(SRpcMsg *pReq) {
     goto _OVER;
   }
 
-  if (mndCheckDbAuth(pMnode, pReq->conn.user, MND_OPER_WRITE_DB, pDb) != 0) {
+  if (mndCheckDbAuth(pMnode, pReq->info.conn.user, MND_OPER_WRITE_DB, pDb) != 0) {
     goto _OVER;
   }
 
@@ -852,7 +852,7 @@ static int32_t mndDropSma(SMnode *pMnode, SRpcMsg *pReq, SDbObj *pDb, SSmaObj *p
   if (pTrans == NULL) goto _OVER;
 
   mDebug("trans:%d, used to drop sma:%s", pTrans->id, pSma->name);
-  mndTransSetDbName(pTrans, pDb->name);
+  mndTransSetDbName(pTrans, pDb->name, NULL);
 
   if (mndSetDropSmaRedoLogs(pMnode, pTrans, pSma) != 0) goto _OVER;
   if (mndSetDropSmaVgroupRedoLogs(pMnode, pTrans, pVgroup) != 0) goto _OVER;
@@ -971,7 +971,7 @@ static int32_t mndProcessDropSmaReq(SRpcMsg *pReq) {
     goto _OVER;
   }
 
-  if (mndCheckDbAuth(pMnode, pReq->conn.user, MND_OPER_WRITE_DB, pDb) != 0) {
+  if (mndCheckDbAuth(pMnode, pReq->info.conn.user, MND_OPER_WRITE_DB, pDb) != 0) {
     goto _OVER;
   }
 
diff --git a/source/dnode/mnode/impl/src/mndSnode.c b/source/dnode/mnode/impl/src/mndSnode.c
index c84dc2f3dd..0a99f356b1 100644
--- a/source/dnode/mnode/impl/src/mndSnode.c
+++ b/source/dnode/mnode/impl/src/mndSnode.c
@@ -300,7 +300,7 @@ static int32_t mndProcessCreateSnodeReq(SRpcMsg *pReq) {
     goto _OVER;
   }
 
-  if (mndCheckOperAuth(pMnode, pReq->conn.user, MND_OPER_CREATE_SNODE) != 0) {
+  if (mndCheckOperAuth(pMnode, pReq->info.conn.user, MND_OPER_CREATE_SNODE) != 0) {
     goto _OVER;
   }
 
@@ -404,7 +404,7 @@ static int32_t mndProcessDropSnodeReq(SRpcMsg *pReq) {
     goto _OVER;
   }
 
-  if (mndCheckOperAuth(pMnode, pReq->conn.user, MND_OPER_DROP_SNODE) != 0) {
+  if (mndCheckOperAuth(pMnode, pReq->info.conn.user, MND_OPER_DROP_SNODE) != 0) {
     goto _OVER;
   }
 
diff --git a/source/dnode/mnode/impl/src/mndStb.c b/source/dnode/mnode/impl/src/mndStb.c
index b83aa34a3a..345a5215c2 100644
--- a/source/dnode/mnode/impl/src/mndStb.c
+++ b/source/dnode/mnode/impl/src/mndStb.c
@@ -758,7 +758,7 @@ _OVER:
 }
 
 int32_t mndAddStbToTrans(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, SStbObj *pStb) {
-  mndTransSetDbName(pTrans, pDb->name);
+  mndTransSetDbName(pTrans, pDb->name, NULL);
   if (mndSetCreateStbRedoLogs(pMnode, pTrans, pDb, pStb) != 0) return -1;
   if (mndSetCreateStbUndoLogs(pMnode, pTrans, pDb, pStb) != 0) return -1;
   if (mndSetCreateStbCommitLogs(pMnode, pTrans, pDb, pStb) != 0) return -1;
@@ -805,7 +805,7 @@ static int32_t mndProcessCreateStbReq(SRpcMsg *pReq) {
     goto _OVER;
   }
 
-  if (mndCheckDbAuth(pMnode, pReq->conn.user, MND_OPER_WRITE_DB, pDb) != 0) {
+  if (mndCheckDbAuth(pMnode, pReq->info.conn.user, MND_OPER_WRITE_DB, pDb) != 0) {
     goto _OVER;
   }
 
@@ -1396,7 +1396,7 @@ static int32_t mndAlterStb(SMnode *pMnode, SRpcMsg *pReq, const SMAlterStbReq *p
   if (pTrans == NULL) goto _OVER;
 
   mDebug("trans:%d, used to alter stb:%s", pTrans->id, pAlter->name);
-  mndTransSetDbName(pTrans, pDb->name);
+  mndTransSetDbName(pTrans, pDb->name, NULL);
 
   if (needRsp) {
     void   *pCont = NULL;
@@ -1454,7 +1454,7 @@ static int32_t mndProcessAlterStbReq(SRpcMsg *pReq) {
     goto _OVER;
   }
 
-  if (mndCheckDbAuth(pMnode, pReq->conn.user, MND_OPER_WRITE_DB, pDb) != 0) {
+  if (mndCheckDbAuth(pMnode, pReq->info.conn.user, MND_OPER_WRITE_DB, pDb) != 0) {
     goto _OVER;
   }
 
@@ -1537,7 +1537,7 @@ static int32_t mndDropStb(SMnode *pMnode, SRpcMsg *pReq, SDbObj *pDb, SStbObj *p
   if (pTrans == NULL) goto _OVER;
 
   mDebug("trans:%d, used to drop stb:%s", pTrans->id, pStb->name);
-  mndTransSetDbName(pTrans, pDb->name);
+  mndTransSetDbName(pTrans, pDb->name, NULL);
 
   if (mndSetDropStbRedoLogs(pMnode, pTrans, pStb) != 0) goto _OVER;
   if (mndSetDropStbCommitLogs(pMnode, pTrans, pStb) != 0) goto _OVER;
@@ -1584,7 +1584,7 @@ static int32_t mndProcessDropStbReq(SRpcMsg *pReq) {
     goto _OVER;
   }
 
-  if (mndCheckDbAuth(pMnode, pReq->conn.user, MND_OPER_WRITE_DB, pDb) != 0) {
+  if (mndCheckDbAuth(pMnode, pReq->info.conn.user, MND_OPER_WRITE_DB, pDb) != 0) {
     goto _OVER;
   }
 
diff --git a/source/dnode/mnode/impl/src/mndStream.c b/source/dnode/mnode/impl/src/mndStream.c
index 3a42c694c8..d432256f15 100644
--- a/source/dnode/mnode/impl/src/mndStream.c
+++ b/source/dnode/mnode/impl/src/mndStream.c
@@ -545,7 +545,7 @@ static int32_t mndCreateStream(SMnode *pMnode, SRpcMsg *pReq, SCMCreateStreamReq
     return -1;
   }
 
-  if (streamObj.targetSTbName[0] && mndCreateStbForStream(pMnode, pTrans, &streamObj, pReq->conn.user) < 0) {
+  if (streamObj.targetSTbName[0] && mndCreateStbForStream(pMnode, pTrans, &streamObj, pReq->info.conn.user) < 0) {
     mError("trans:%d, failed to create stb for stream since %s", pTrans->id, terrstr());
     mndTransDrop(pTrans);
     return -1;
@@ -602,7 +602,7 @@ static int32_t mndProcessCreateStreamReq(SRpcMsg *pReq) {
     goto _OVER;
   }
 
-  if (mndCheckDbAuth(pMnode, pReq->conn.user, MND_OPER_WRITE_DB, pDb) != 0) {
+  if (mndCheckDbAuth(pMnode, pReq->info.conn.user, MND_OPER_WRITE_DB, pDb) != 0) {
     goto _OVER;
   }
 #endif
@@ -613,9 +613,9 @@ static int32_t mndProcessCreateStreamReq(SRpcMsg *pReq) {
     goto _OVER;
   }
 
-  mndTransSetDbName(pTrans, createStreamReq.sourceDB);
+  mndTransSetDbName(pTrans, createStreamReq.sourceDB, NULL);
   // TODO
-  /*mndTransSetDbName(pTrans, streamObj.targetDb);*/
+  /*mndTransSetDbName(pTrans, streamObj.targetDb, NULL);*/
   mDebug("trans:%d, used to create stream:%s", pTrans->id, createStreamReq.name);
 
   // build stream obj from request
@@ -627,7 +627,7 @@ static int32_t mndProcessCreateStreamReq(SRpcMsg *pReq) {
   }
 
   // create stb for stream
-  if (mndCreateStbForStream(pMnode, pTrans, &streamObj, pReq->conn.user) < 0) {
+  if (mndCreateStbForStream(pMnode, pTrans, &streamObj, pReq->info.conn.user) < 0) {
     mError("trans:%d, failed to create stb for stream %s since %s", pTrans->id, createStreamReq.name, terrstr());
     mndTransDrop(pTrans);
     goto _OVER;
@@ -696,7 +696,7 @@ static int32_t mndProcessDropStreamReq(SRpcMsg *pReq) {
 
 #if 0
   // todo check auth
-  pUser = mndAcquireUser(pMnode, pReq->conn.user);
+  pUser = mndAcquireUser(pMnode, pReq->info.conn.user);
   if (pUser == NULL) {
     goto DROP_STREAM_OVER;
   }
diff --git a/source/dnode/mnode/impl/src/mndSubscribe.c b/source/dnode/mnode/impl/src/mndSubscribe.c
index 65a5d22bec..d2b7a61e83 100644
--- a/source/dnode/mnode/impl/src/mndSubscribe.c
+++ b/source/dnode/mnode/impl/src/mndSubscribe.c
@@ -403,7 +403,7 @@ static int32_t mndDoRebalance(SMnode *pMnode, const SMqRebInputObj *pInput, SMqR
 
 static int32_t mndPersistRebResult(SMnode *pMnode, SRpcMsg *pMsg, const SMqRebOutputObj *pOutput) {
   STrans *pTrans = mndTransCreate(pMnode, TRN_POLICY_ROLLBACK, TRN_CONFLICT_DB_INSIDE, pMsg);
-  mndTransSetDbName(pTrans, pOutput->pSub->dbName);
+  mndTransSetDbName(pTrans, pOutput->pSub->dbName, NULL);
   if (pTrans == NULL) return -1;
 
   // make txn:
diff --git a/source/dnode/mnode/impl/src/mndSync.c b/source/dnode/mnode/impl/src/mndSync.c
index d71d9b4e72..6b52730372 100644
--- a/source/dnode/mnode/impl/src/mndSync.c
+++ b/source/dnode/mnode/impl/src/mndSync.c
@@ -59,8 +59,8 @@ void mndSyncCommitMsg(struct SSyncFSM *pFsm, const SRpcMsg *pMsg, SFsmCbMeta cbM
     if (pMgmt->errCode != 0) {
       mError("trans:%d, failed to propose since %s", transId, tstrerror(pMgmt->errCode));
     }
-    tsem_post(&pMgmt->syncSem);
     pMgmt->transId = 0;
+    tsem_post(&pMgmt->syncSem);
   } else {
     STrans *pTrans = mndAcquireTrans(pMnode, transId);
     if (pTrans != NULL) {
@@ -70,7 +70,8 @@ void mndSyncCommitMsg(struct SSyncFSM *pFsm, const SRpcMsg *pMsg, SFsmCbMeta cbM
 
     if (cbMeta.index - sdbGetApplyIndex(pMnode->pSdb) > 100) {
       SSnapshotMeta sMeta = {0};
-      if (syncGetSnapshotMeta(pMnode->syncMgmt.sync, &sMeta) == 0) {
+      // if (syncGetSnapshotMeta(pMnode->syncMgmt.sync, &sMeta) == 0) {
+      if (syncGetSnapshotMetaByIndex(pMnode->syncMgmt.sync, cbMeta.index, &sMeta) == 0) {
         sdbSetCurConfig(pMnode->pSdb, sMeta.lastConfigIndex);
       }
       sdbWriteFile(pMnode->pSdb);
@@ -90,7 +91,10 @@ void mndRestoreFinish(struct SSyncFSM *pFsm) {
   SMnode *pMnode = pFsm->data;
 
   SSnapshotMeta sMeta = {0};
-  if (syncGetSnapshotMeta(pMnode->syncMgmt.sync, &sMeta) == 0) {
+  // if (syncGetSnapshotMeta(pMnode->syncMgmt.sync, &sMeta) == 0) {
+
+  SyncIndex snapshotIndex = sdbGetApplyIndex(pMnode->pSdb);
+  if (syncGetSnapshotMetaByIndex(pMnode->syncMgmt.sync, snapshotIndex, &sMeta) == 0) {
     sdbSetCurConfig(pMnode->pSdb, sMeta.lastConfigIndex);
   }
 
@@ -123,8 +127,8 @@ void mndReConfig(struct SSyncFSM *pFsm, const SRpcMsg *pMsg, SReConfigCbMeta cbM
     if (pMgmt->errCode != 0) {
       mError("trans:-1, failed to propose sync reconfig since %s", tstrerror(pMgmt->errCode));
     }
-    tsem_post(&pMgmt->syncSem);
     pMgmt->transId = 0;
+    tsem_post(&pMgmt->syncSem);
   }
 }
 
@@ -262,6 +266,7 @@ void mndSyncStart(SMnode *pMnode) {
 
 void mndSyncStop(SMnode *pMnode) {
   if (pMnode->syncMgmt.transId != 0) {
+    pMnode->syncMgmt.transId = 0;
     tsem_post(&pMnode->syncMgmt.syncSem);
     pMnode->syncMgmt.transId = 0;
   }
diff --git a/source/dnode/mnode/impl/src/mndTopic.c b/source/dnode/mnode/impl/src/mndTopic.c
index 4c2730ce94..9632c04f4c 100644
--- a/source/dnode/mnode/impl/src/mndTopic.c
+++ b/source/dnode/mnode/impl/src/mndTopic.c
@@ -474,7 +474,7 @@ static int32_t mndProcessCreateTopicReq(SRpcMsg *pReq) {
     goto _OVER;
   }
 
-  if (mndCheckDbAuth(pMnode, pReq->conn.user, MND_OPER_WRITE_DB, pDb) != 0) {
+  if (mndCheckDbAuth(pMnode, pReq->info.conn.user, MND_OPER_WRITE_DB, pDb) != 0) {
     goto _OVER;
   }
 
@@ -566,7 +566,7 @@ static int32_t mndProcessDropTopicReq(SRpcMsg *pReq) {
 #endif
 
   STrans *pTrans = mndTransCreate(pMnode, TRN_POLICY_ROLLBACK, TRN_CONFLICT_DB_INSIDE, pReq);
-  mndTransSetDbName(pTrans, pTopic->db);
+  mndTransSetDbName(pTrans, pTopic->db, NULL);
   if (pTrans == NULL) {
     mError("topic:%s, failed to drop since %s", pTopic->name, terrstr());
     return -1;
diff --git a/source/dnode/mnode/impl/src/mndTrans.c b/source/dnode/mnode/impl/src/mndTrans.c
index dafb2fa1d1..4ffa601889 100644
--- a/source/dnode/mnode/impl/src/mndTrans.c
+++ b/source/dnode/mnode/impl/src/mndTrans.c
@@ -22,8 +22,8 @@
 #include "mndSync.h"
 #include "mndUser.h"
 
-#define TRANS_VER_NUMBER   1
-#define TRANS_ARRAY_SIZE   8
+#define TRANS_VER_NUMBER 1
+#define TRANS_ARRAY_SIZE 8
 #define TRANS_RESERVE_SIZE 64
 
 static SSdbRaw *mndTransActionEncode(STrans *pTrans);
@@ -122,7 +122,8 @@ static SSdbRaw *mndTransActionEncode(STrans *pTrans) {
   SDB_SET_INT8(pRaw, dataPos, pTrans->conflict, _OVER)
   SDB_SET_INT8(pRaw, dataPos, pTrans->exec, _OVER)
   SDB_SET_INT64(pRaw, dataPos, pTrans->createdTime, _OVER)
-  SDB_SET_BINARY(pRaw, dataPos, pTrans->dbname, TSDB_DB_FNAME_LEN, _OVER)
+  SDB_SET_BINARY(pRaw, dataPos, pTrans->dbname1, TSDB_DB_FNAME_LEN, _OVER)
+  SDB_SET_BINARY(pRaw, dataPos, pTrans->dbname2, TSDB_DB_FNAME_LEN, _OVER)
   SDB_SET_INT32(pRaw, dataPos, pTrans->redoActionPos, _OVER)
 
   int32_t redoActionNum = taosArrayGetSize(pTrans->redoActions);
@@ -270,7 +271,8 @@ static SSdbRow *mndTransActionDecode(SSdbRaw *pRaw) {
   pTrans->conflict = conflict;
   pTrans->exec = exec;
   SDB_GET_INT64(pRaw, dataPos, &pTrans->createdTime, _OVER)
-  SDB_GET_BINARY(pRaw, dataPos, pTrans->dbname, TSDB_DB_FNAME_LEN, _OVER)
+  SDB_GET_BINARY(pRaw, dataPos, pTrans->dbname1, TSDB_DB_FNAME_LEN, _OVER)
+  SDB_GET_BINARY(pRaw, dataPos, pTrans->dbname2, TSDB_DB_FNAME_LEN, _OVER)
   SDB_GET_INT32(pRaw, dataPos, &pTrans->redoActionPos, _OVER)
   SDB_GET_INT32(pRaw, dataPos, &redoActionNum, _OVER)
   SDB_GET_INT32(pRaw, dataPos, &undoActionNum, _OVER)
@@ -649,7 +651,14 @@ void mndTransSetCb(STrans *pTrans, ETrnFunc startFunc, ETrnFunc stopFunc, void *
   pTrans->paramLen = paramLen;
 }
 
-void mndTransSetDbName(STrans *pTrans, const char *dbname) { memcpy(pTrans->dbname, dbname, TSDB_DB_FNAME_LEN); }
+void mndTransSetDbName(STrans *pTrans, const char *dbname1, const char *dbname2) {
+  if (dbname1 != NULL) {
+    memcpy(pTrans->dbname1, dbname1, TSDB_DB_FNAME_LEN);
+  }
+  if (dbname2 != NULL) {
+    memcpy(pTrans->dbname2, dbname2, TSDB_DB_FNAME_LEN);
+  }
+}
 
 void mndTransSetSerial(STrans *pTrans) { pTrans->exec = TRN_EXEC_SERIAL; }
 
@@ -688,14 +697,24 @@ static bool mndCheckTransConflict(SMnode *pMnode, STrans *pNew) {
     if (pNew->conflict == TRN_CONFLICT_GLOBAL) conflict = true;
     if (pNew->conflict == TRN_CONFLICT_DB) {
       if (pTrans->conflict == TRN_CONFLICT_GLOBAL) conflict = true;
-      if (pTrans->conflict == TRN_CONFLICT_DB && strcmp(pNew->dbname, pTrans->dbname) == 0) conflict = true;
-      if (pTrans->conflict == TRN_CONFLICT_DB_INSIDE && strcmp(pNew->dbname, pTrans->dbname) == 0) conflict = true;
+      if (pTrans->conflict == TRN_CONFLICT_DB || pTrans->conflict == TRN_CONFLICT_DB_INSIDE) {
+        if (strcmp(pNew->dbname1, pTrans->dbname1) == 0 || strcmp(pNew->dbname1, pTrans->dbname2) == 0 ||
+            strcmp(pNew->dbname2, pTrans->dbname1) == 0 || strcmp(pNew->dbname2, pTrans->dbname2) == 0) {
+          conflict = true;
+        }
+      }
     }
     if (pNew->conflict == TRN_CONFLICT_DB_INSIDE) {
       if (pTrans->conflict == TRN_CONFLICT_GLOBAL) conflict = true;
-      if (pTrans->conflict == TRN_CONFLICT_DB && strcmp(pNew->dbname, pTrans->dbname) == 0) conflict = true;
+      if (pTrans->conflict == TRN_CONFLICT_DB) {
+        if (strcmp(pNew->dbname1, pTrans->dbname1) == 0 || strcmp(pNew->dbname1, pTrans->dbname2) == 0 ||
+            strcmp(pNew->dbname2, pTrans->dbname1) == 0 || strcmp(pNew->dbname2, pTrans->dbname2) == 0) {
+          conflict = true;
+        }
+      }
     }
-    mError("trans:%d, can't execute since conflict with trans:%d, db:%s", pNew->id, pTrans->id, pTrans->dbname);
+    mError("trans:%d, can't execute since conflict with trans:%d, db1:%s db2:%s", pNew->id, pTrans->id, pTrans->dbname1,
+           pTrans->dbname2);
     sdbRelease(pMnode->pSdb, pTrans);
   }
 
@@ -704,7 +723,7 @@ static bool mndCheckTransConflict(SMnode *pMnode, STrans *pNew) {
 
 int32_t mndTransPrepare(SMnode *pMnode, STrans *pTrans) {
   if (pTrans->conflict == TRN_CONFLICT_DB || pTrans->conflict == TRN_CONFLICT_DB_INSIDE) {
-    if (strlen(pTrans->dbname) == 0) {
+    if (strlen(pTrans->dbname1) == 0 && strlen(pTrans->dbname2) == 0) {
       terrno = TSDB_CODE_MND_TRANS_CONFLICT;
       mError("trans:%d, failed to prepare conflict db not set", pTrans->id);
       return -1;
@@ -1369,7 +1388,7 @@ static int32_t mndProcessKillTransReq(SRpcMsg *pReq) {
 
   mInfo("trans:%d, start to kill", killReq.transId);
 
-  if (mndCheckOperAuth(pMnode, pReq->conn.user, MND_OPER_KILL_TRANS) != 0) {
+  if (mndCheckOperAuth(pMnode, pReq->info.conn.user, MND_OPER_KILL_TRANS) != 0) {
     goto _OVER;
   }
 
@@ -1417,7 +1436,9 @@ void mndTransPullup(SMnode *pMnode) {
   }
 
   SSnapshotMeta sMeta = {0};
-  if (syncGetSnapshotMeta(pMnode->syncMgmt.sync, &sMeta) == 0) {
+  // if (syncGetSnapshotMeta(pMnode->syncMgmt.sync, &sMeta) == 0) {
+  SyncIndex snapshotIndex = sdbGetApplyIndex(pMnode->pSdb);
+  if (syncGetSnapshotMetaByIndex(pMnode->syncMgmt.sync, snapshotIndex, &sMeta) == 0) {
     sdbSetCurConfig(pMnode->pSdb, sMeta.lastConfigIndex);
   }
   sdbWriteFile(pMnode->pSdb);
@@ -1449,10 +1470,15 @@ static int32_t mndRetrieveTrans(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *pBl
     pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
     colDataAppend(pColInfo, numOfRows, (const char *)stage, false);
 
-    char dbname[TSDB_DB_NAME_LEN + VARSTR_HEADER_SIZE] = {0};
-    STR_WITH_MAXSIZE_TO_VARSTR(dbname, mndGetDbStr(pTrans->dbname), pShow->pMeta->pSchemas[cols].bytes);
+    char dbname1[TSDB_DB_NAME_LEN + VARSTR_HEADER_SIZE] = {0};
+    STR_WITH_MAXSIZE_TO_VARSTR(dbname1, mndGetDbStr(pTrans->dbname1), pShow->pMeta->pSchemas[cols].bytes);
     pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
-    colDataAppend(pColInfo, numOfRows, (const char *)dbname, false);
+    colDataAppend(pColInfo, numOfRows, (const char *)dbname1, false);
+
+    char dbname2[TSDB_DB_NAME_LEN + VARSTR_HEADER_SIZE] = {0};
+    STR_WITH_MAXSIZE_TO_VARSTR(dbname2, mndGetDbStr(pTrans->dbname2), pShow->pMeta->pSchemas[cols].bytes);
+    pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
+    colDataAppend(pColInfo, numOfRows, (const char *)dbname2, false);
 
     pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
     colDataAppend(pColInfo, numOfRows, (const char *)&pTrans->failedTimes, false);
diff --git a/source/dnode/mnode/impl/src/mndUser.c b/source/dnode/mnode/impl/src/mndUser.c
index 9590823106..eb0a818a60 100644
--- a/source/dnode/mnode/impl/src/mndUser.c
+++ b/source/dnode/mnode/impl/src/mndUser.c
@@ -354,13 +354,13 @@ static int32_t mndProcessCreateUserReq(SRpcMsg *pReq) {
     goto _OVER;
   }
 
-  pOperUser = mndAcquireUser(pMnode, pReq->conn.user);
+  pOperUser = mndAcquireUser(pMnode, pReq->info.conn.user);
   if (pOperUser == NULL) {
     terrno = TSDB_CODE_MND_NO_USER_FROM_CONN;
     goto _OVER;
   }
 
-  if (mndCheckOperAuth(pMnode, pReq->conn.user, MND_OPER_CREATE_USER) != 0) {
+  if (mndCheckOperAuth(pMnode, pReq->info.conn.user, MND_OPER_CREATE_USER) != 0) {
     goto _OVER;
   }
 
@@ -460,7 +460,7 @@ static int32_t mndProcessAlterUserReq(SRpcMsg *pReq) {
     goto _OVER;
   }
 
-  pOperUser = mndAcquireUser(pMnode, pReq->conn.user);
+  pOperUser = mndAcquireUser(pMnode, pReq->info.conn.user);
   if (pOperUser == NULL) {
     terrno = TSDB_CODE_MND_NO_USER_FROM_CONN;
     goto _OVER;
@@ -643,7 +643,7 @@ static int32_t mndProcessDropUserReq(SRpcMsg *pReq) {
     goto _OVER;
   }
 
-  if (mndCheckOperAuth(pMnode, pReq->conn.user, MND_OPER_DROP_USER) != 0) {
+  if (mndCheckOperAuth(pMnode, pReq->info.conn.user, MND_OPER_DROP_USER) != 0) {
     goto _OVER;
   }
 
diff --git a/source/dnode/mnode/impl/src/mndVgroup.c b/source/dnode/mnode/impl/src/mndVgroup.c
index 755f4ef0b2..cec83d1af5 100644
--- a/source/dnode/mnode/impl/src/mndVgroup.c
+++ b/source/dnode/mnode/impl/src/mndVgroup.c
@@ -1200,7 +1200,7 @@ static int32_t mndProcessRedistributeVgroupMsg(SRpcMsg *pReq) {
 
   mInfo("vgId:%d, start to redistribute to dnode %d:%d:%d", req.vgId, req.dnodeId1, req.dnodeId2, req.dnodeId3);
 
-  if (mndCheckOperAuth(pMnode, pReq->conn.user, MND_OPER_REDISTRIBUTE_VGROUP) != 0) goto _OVER;
+  if (mndCheckOperAuth(pMnode, pReq->info.conn.user, MND_OPER_REDISTRIBUTE_VGROUP) != 0) goto _OVER;
 
   pVgroup = mndAcquireVgroup(pMnode, req.vgId);
   if (pVgroup == NULL) goto _OVER;
@@ -1500,7 +1500,7 @@ static int32_t mndProcessSplitVgroupMsg(SRpcMsg *pReq) {
   pDb = mndAcquireDb(pMnode, pVgroup->dbName);
   if (pDb == NULL) goto _OVER;
 
-  if (mndCheckOperAuth(pMnode, pReq->conn.user, MND_OPER_SPLIT_VGROUP) != 0) goto _OVER;
+  if (mndCheckOperAuth(pMnode, pReq->info.conn.user, MND_OPER_SPLIT_VGROUP) != 0) goto _OVER;
 
   code = mndSplitVgroup(pMnode, pReq, pDb, pVgroup);
   if (code == 0) code = TSDB_CODE_ACTION_IN_PROGRESS;
@@ -1624,7 +1624,7 @@ static int32_t mndProcessBalanceVgroupMsg(SRpcMsg *pReq) {
 
   mDebug("start to balance vgroup");
 
-  if (mndCheckOperAuth(pMnode, pReq->conn.user, MND_OPER_BALANCE_VGROUP) != 0) goto _OVER;
+  if (mndCheckOperAuth(pMnode, pReq->info.conn.user, MND_OPER_BALANCE_VGROUP) != 0) goto _OVER;
 
   while (1) {
     SDnodeObj *pDnode = NULL;
diff --git a/source/dnode/mnode/impl/test/trans/trans2.cpp b/source/dnode/mnode/impl/test/trans/trans2.cpp
index 022c82c73d..aee8aa2748 100644
--- a/source/dnode/mnode/impl/test/trans/trans2.cpp
+++ b/source/dnode/mnode/impl/test/trans/trans2.cpp
@@ -128,7 +128,7 @@ class MndTestTrans2 : public ::testing::Test {
     mndTransSetCb(pTrans, TRANS_START_FUNC_TEST, TRANS_STOP_FUNC_TEST, param, strlen(param) + 1);
 
     if (pDb != NULL) {
-      mndTransSetDbName(pTrans, pDb->name);
+      mndTransSetDbName(pTrans, pDb->name, NULL);
     }
 
     int32_t code = mndTransPrepare(pMnode, pTrans);
@@ -201,7 +201,7 @@ class MndTestTrans2 : public ::testing::Test {
     }
 
     if (pDb != NULL) {
-      mndTransSetDbName(pTrans, pDb->name);
+      mndTransSetDbName(pTrans, pDb->name, NULL);
     }
 
     int32_t code = mndTransPrepare(pMnode, pTrans);
diff --git a/source/dnode/vnode/src/vnd/vnodeCommit.c b/source/dnode/vnode/src/vnd/vnodeCommit.c
index 874210306f..3715866bb8 100644
--- a/source/dnode/vnode/src/vnd/vnodeCommit.c
+++ b/source/dnode/vnode/src/vnd/vnodeCommit.c
@@ -220,7 +220,7 @@ int vnodeCommit(SVnode *pVnode) {
   info.state.committed = pVnode->state.applied;
   snprintf(dir, TSDB_FILENAME_LEN, "%s%s%s", tfsGetPrimaryPath(pVnode->pTfs), TD_DIRSEP, pVnode->path);
   if (vnodeSaveInfo(dir, &info) < 0) {
-    // ASSERT(0);
+    ASSERT(0);
     return -1;
   }
 
diff --git a/source/dnode/vnode/src/vnd/vnodeSvr.c b/source/dnode/vnode/src/vnd/vnodeSvr.c
index d170931e7e..da1a126a76 100644
--- a/source/dnode/vnode/src/vnd/vnodeSvr.c
+++ b/source/dnode/vnode/src/vnd/vnodeSvr.c
@@ -466,10 +466,10 @@ static int32_t vnodeProcessDropStbReq(SVnode *pVnode, int64_t version, void *pRe
   }
 
   // process request
-  // if (metaDropSTable(pVnode->pMeta, version, &req) < 0) {
-  //   rcode = terrno;
-  //   goto _exit;
-  // }
+  if (metaDropSTable(pVnode->pMeta, version, &req) < 0) {
+    rcode = terrno;
+    goto _exit;
+  }
 
   // return rsp
 _exit:
diff --git a/source/dnode/vnode/src/vnd/vnodeSync.c b/source/dnode/vnode/src/vnd/vnodeSync.c
index 8662c8369b..f46114746e 100644
--- a/source/dnode/vnode/src/vnd/vnodeSync.c
+++ b/source/dnode/vnode/src/vnd/vnodeSync.c
@@ -184,7 +184,7 @@ void vnodeApplyMsg(SQueueInfo *pInfo, STaosQall *qall, int32_t numOfMsgs) {
 
     SRpcMsg rsp = {.code = pMsg->code, .info = pMsg->info};
     if (rsp.code == 0) {
-      if (vnodeProcessWriteReq(pVnode, pMsg, pMsg->conn.applyIndex, &rsp) < 0) {
+      if (vnodeProcessWriteReq(pVnode, pMsg, pMsg->info.conn.applyIndex, &rsp) < 0) {
         rsp.code = terrno;
         vError("vgId:%d, msg:%p failed to apply since %s", vgId, pMsg, terrstr());
       }
@@ -329,8 +329,9 @@ static int32_t vnodeSyncGetSnapshot(SSyncFSM *pFsm, SSnapshot *pSnapshot) {
 static void vnodeSyncReconfig(struct SSyncFSM *pFsm, const SRpcMsg *pMsg, SReConfigCbMeta cbMeta) {
   SVnode *pVnode = pFsm->data;
 
-  SRpcMsg rpcMsg = {.msgType = pMsg->msgType, .contLen = pMsg->contLen, .conn.applyIndex = cbMeta.index};
+  SRpcMsg rpcMsg = {.msgType = pMsg->msgType, .contLen = pMsg->contLen};
   syncGetAndDelRespRpc(pVnode->sync, cbMeta.seqNum, &rpcMsg.info);
+  rpcMsg.info.conn.applyIndex = cbMeta.index;
 
   vInfo("vgId:%d, alter vnode replica is confirmed, type:%s contLen:%d seq:%" PRIu64 " handle:%p", TD_VID(pVnode),
         TMSG_INFO(pMsg->msgType), pMsg->contLen, cbMeta.seqNum, rpcMsg.info.handle);
@@ -359,10 +360,11 @@ static void vnodeSyncCommitMsg(SSyncFSM *pFsm, const SRpcMsg *pMsg, SFsmCbMeta c
         pFsm, cbMeta.index, cbMeta.isWeak, cbMeta.code, cbMeta.state, syncUtilState2String(cbMeta.state), beginIndex);
     syncRpcMsgLog2(logBuf, (SRpcMsg *)pMsg);
 
-    SRpcMsg rpcMsg = {.msgType = pMsg->msgType, .contLen = pMsg->contLen, .conn.applyIndex = cbMeta.index};
+    SRpcMsg rpcMsg = {.msgType = pMsg->msgType, .contLen = pMsg->contLen};
     rpcMsg.pCont = rpcMallocCont(rpcMsg.contLen);
     memcpy(rpcMsg.pCont, pMsg->pCont, pMsg->contLen);
     syncGetAndDelRespRpc(pVnode->sync, cbMeta.seqNum, &rpcMsg.info);
+    rpcMsg.info.conn.applyIndex = cbMeta.index;
     tmsgPutToQueue(&pVnode->msgCb, APPLY_QUEUE, &rpcMsg);
 
   } else {
diff --git a/source/libs/executor/src/executorimpl.c b/source/libs/executor/src/executorimpl.c
index fb79c53384..40b019eb5d 100644
--- a/source/libs/executor/src/executorimpl.c
+++ b/source/libs/executor/src/executorimpl.c
@@ -3507,8 +3507,7 @@ static int32_t handleLimitOffset(SOperatorInfo* pOperator, SSDataBlock* pBlock)
   // check for the limitation in each group
   if (pProjectInfo->limit.limit > 0 && pProjectInfo->curOutput + pRes->info.rows >= pProjectInfo->limit.limit) {
     pRes->info.rows = (int32_t)(pProjectInfo->limit.limit - pProjectInfo->curOutput);
-
-    if (pProjectInfo->slimit.limit == -1 || pProjectInfo->slimit.limit <= pProjectInfo->curGroupOutput) {
+    if (pProjectInfo->slimit.limit > 0 && pProjectInfo->slimit.limit <= pProjectInfo->curGroupOutput) {
       pOperator->status = OP_EXEC_DONE;
     }
 
diff --git a/source/libs/executor/src/groupoperator.c b/source/libs/executor/src/groupoperator.c
index 23226a0134..4fc25688c4 100644
--- a/source/libs/executor/src/groupoperator.c
+++ b/source/libs/executor/src/groupoperator.c
@@ -331,7 +331,6 @@ static SSDataBlock* hashGroupbyAggregate(SOperatorInfo* pOperator) {
   }
 
   pOperator->status = OP_RES_TO_RETURN;
-  closeAllResultRows(&pInfo->binfo.resultRowInfo);
 
 #if 0
   if(pOperator->fpSet.encodeResultRow){
diff --git a/source/libs/executor/src/scanoperator.c b/source/libs/executor/src/scanoperator.c
index ddebba1c9e..80276007de 100644
--- a/source/libs/executor/src/scanoperator.c
+++ b/source/libs/executor/src/scanoperator.c
@@ -2170,25 +2170,17 @@ SSDataBlock* getSortedTableMergeScanBlockData(SSortHandle* pHandle, int32_t capa
   blockDataEnsureCapacity(p, capacity);
 
   while (1) {
-    STupleHandle* pTupleHandle = NULL;
-    if (pInfo->prefetchedTuple == NULL) {
-      pTupleHandle = tsortNextTuple(pHandle);
-    } else {
-      pTupleHandle = pInfo->prefetchedTuple;
-    }
-
+    STupleHandle* pTupleHandle = tsortNextTuple(pHandle);
     if (pTupleHandle == NULL) {
       break;
     }
 
     appendOneRowToDataBlock(p, pTupleHandle);
-
     if (p->info.rows >= capacity) {
       break;
     }
   }
 
-
   qDebug("%s get sorted row blocks, rows:%d", GET_TASKID(pTaskInfo), p->info.rows);
   return (p->info.rows > 0) ? p : NULL;
 }
@@ -2261,7 +2253,6 @@ SOperatorInfo* createTableMergeScanOperatorInfo(STableScanPhysiNode* pTableScanN
                                                 SReadHandle* readHandle, SExecTaskInfo* pTaskInfo) {
   STableMergeScanInfo* pInfo = taosMemoryCalloc(1, sizeof(STableMergeScanInfo));
   SOperatorInfo*       pOperator = taosMemoryCalloc(1, sizeof(SOperatorInfo));
-
   if (pInfo == NULL || pOperator == NULL) {
     goto _error;
   }
@@ -2284,17 +2275,16 @@ SOperatorInfo* createTableMergeScanOperatorInfo(STableScanPhysiNode* pTableScanN
 
   pInfo->scanInfo = (SScanInfo){.numOfAsc = pTableScanNode->scanSeq[0], .numOfDesc = pTableScanNode->scanSeq[1]};
 
-  pInfo->readHandle = *readHandle;
-  pInfo->interval = extractIntervalInfo(pTableScanNode);
+  pInfo->readHandle         = *readHandle;
+  pInfo->interval           = extractIntervalInfo(pTableScanNode);
   pInfo->sample.sampleRatio = pTableScanNode->ratio;
-  pInfo->sample.seed = taosGetTimestampSec();
-
-  pInfo->dataBlockLoadFlag = pTableScanNode->dataRequired;
-  pInfo->pFilterNode = pTableScanNode->scan.node.pConditions;
-  pInfo->dataReaders = dataReaders;
-  pInfo->scanFlag = MAIN_SCAN;
-  pInfo->pColMatchInfo = pColList;
-  pInfo->curTWinIdx = 0;
+  pInfo->sample.seed        = taosGetTimestampSec();
+  pInfo->dataBlockLoadFlag  = pTableScanNode->dataRequired;
+  pInfo->pFilterNode        = pTableScanNode->scan.node.pConditions;
+  pInfo->dataReaders        = dataReaders;
+  pInfo->scanFlag           = MAIN_SCAN;
+  pInfo->pColMatchInfo      = pColList;
+  pInfo->curTWinIdx         = 0;
 
   pInfo->pResBlock = createResDataBlock(pDescNode);
 
@@ -2307,22 +2297,27 @@ SOperatorInfo* createTableMergeScanOperatorInfo(STableScanPhysiNode* pTableScanN
     taosArrayPush(pInfo->sortSourceParams, param);
     taosMemoryFree(param);
   }
+
   pInfo->pSortInfo = generateSortByTsInfo(pInfo->cond.order);
   pInfo->pSortInputBlock = createOneDataBlock(pInfo->pResBlock, false);
+
   int32_t rowSize = pInfo->pResBlock->info.rowSize;
-  pInfo->bufPageSize = rowSize < 1024 ? 1024 : rowSize * 2;
-  pInfo->sortBufSize = pInfo->bufPageSize * 16;
-  pInfo->hasGroupId = false;
+  pInfo->bufPageSize     = getProperSortPageSize(rowSize);
+
+  // todo the total available buffer should be determined by total capacity of buffer of this task.
+  // the additional one is reserved for merge result
+  pInfo->sortBufSize     = pInfo->bufPageSize * (taosArrayGetSize(dataReaders) + 1);
+  pInfo->hasGroupId      = false;
   pInfo->prefetchedTuple = NULL;
 
-  pOperator->name = "TableMergeScanOperator";
+  pOperator->name         = "TableMergeScanOperator";
   // TODO : change it
-  pOperator->operatorType = QUERY_NODE_PHYSICAL_PLAN_TABLE_SCAN;
-  pOperator->blocking = false;
-  pOperator->status = OP_NOT_OPENED;
-  pOperator->info = pInfo;
-  pOperator->numOfExprs = numOfCols;
-  pOperator->pTaskInfo = pTaskInfo;
+  pOperator->operatorType = QUERY_NODE_PHYSICAL_PLAN_TABLE_MERGE_SCAN;
+  pOperator->blocking     = false;
+  pOperator->status       = OP_NOT_OPENED;
+  pOperator->info         = pInfo;
+  pOperator->numOfExprs   = numOfCols;
+  pOperator->pTaskInfo    = pTaskInfo;
   initResultSizeInfo(pOperator, 1024);
 
   pOperator->fpSet =
diff --git a/source/libs/function/src/builtinsimpl.c b/source/libs/function/src/builtinsimpl.c
index 90700580bd..55900c7c7e 100644
--- a/source/libs/function/src/builtinsimpl.c
+++ b/source/libs/function/src/builtinsimpl.c
@@ -1384,8 +1384,9 @@ int32_t maxFunction(SqlFunctionCtx* pCtx) {
   return TSDB_CODE_SUCCESS;
 }
 
-static void setSelectivityValue(SqlFunctionCtx* pCtx, SSDataBlock* pBlock, const STuplePos* pTuplePos,
-                                int32_t rowIndex);
+static void setNullSelectivityValue(SqlFunctionCtx* pCtx, SSDataBlock* pBlock, int32_t rowIndex);
+
+static void setSelectivityValue(SqlFunctionCtx* pCtx, SSDataBlock* pBlock, const STuplePos* pTuplePos, int32_t rIndex);
 
 int32_t minmaxFunctionFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock) {
   SResultRowEntryInfo* pEntryInfo = GET_RES_INFO(pCtx);
@@ -1407,11 +1408,23 @@ int32_t minmaxFunctionFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock) {
 
   if (pEntryInfo->numOfRes > 0) {
     setSelectivityValue(pCtx, pBlock, &pRes->tuplePos, currentRow);
+  } else {
+    setNullSelectivityValue(pCtx, pBlock, currentRow);
   }
 
   return pEntryInfo->numOfRes;
 }
 
+void setNullSelectivityValue(SqlFunctionCtx* pCtx, SSDataBlock* pBlock, int32_t rowIndex) {
+  for (int32_t j = 0; j < pCtx->subsidiaries.num; ++j) {
+    SqlFunctionCtx* pc = pCtx->subsidiaries.pCtx[j];
+    int32_t      dstSlotId = pc->pExpr->base.resSchema.slotId;
+
+    SColumnInfoData* pDstCol = taosArrayGet(pBlock->pDataBlock, dstSlotId);
+    colDataAppendNULL(pDstCol, rowIndex);
+  }
+}
+
 void setSelectivityValue(SqlFunctionCtx* pCtx, SSDataBlock* pBlock, const STuplePos* pTuplePos, int32_t rowIndex) {
   int32_t pageId = pTuplePos->pageId;
   int32_t offset = pTuplePos->offset;
@@ -4627,8 +4640,6 @@ int32_t tailFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock) {
   for (int32_t i = 0; i < pEntryInfo->numOfRes; ++i) {
     STailItem* pItem = pInfo->pItems[i];
     colDataAppend(pCol, currentRow, pItem->data, false);
-
-    // setSelectivityValue(pCtx, pBlock, &pInfo->pItems[i].tuplePos, currentRow);
     currentRow += 1;
   }
 
diff --git a/source/libs/sync/inc/syncRaftCfg.h b/source/libs/sync/inc/syncRaftCfg.h
index e72e1e7be7..cd64402738 100644
--- a/source/libs/sync/inc/syncRaftCfg.h
+++ b/source/libs/sync/inc/syncRaftCfg.h
@@ -29,6 +29,8 @@ extern "C" {
 
 #define CONFIG_FILE_LEN 1024
 
+#define MAX_CONFIG_INDEX_COUNT 512
+
 typedef struct SRaftCfg {
   SSyncCfg  cfg;
   TdFilePtr pFile;
@@ -36,6 +38,10 @@ typedef struct SRaftCfg {
   int8_t    isStandBy;
   int8_t    snapshotEnable;
   SyncIndex lastConfigIndex;
+
+  SyncIndex configIndexArr[MAX_CONFIG_INDEX_COUNT];
+  int32_t   configIndexCount;
+
 } SRaftCfg;
 
 SRaftCfg *raftCfgOpen(const char *path);
diff --git a/source/libs/sync/src/syncAppendEntries.c b/source/libs/sync/src/syncAppendEntries.c
index bea51b2dd3..7b2f79e24c 100644
--- a/source/libs/sync/src/syncAppendEntries.c
+++ b/source/libs/sync/src/syncAppendEntries.c
@@ -713,8 +713,8 @@ static int32_t syncNodeMakeLogSame(SSyncNode* ths, SyncAppendEntries* pMsg) {
   // delete confict entries
   code = ths->pLogStore->syncLogTruncate(ths->pLogStore, delBegin);
   ASSERT(code == 0);
-  sDebug("vgId:%d sync event %s currentTerm:%lu log truncate, from %ld to %ld", ths->vgId,
-         syncUtilState2String(ths->state), ths->pRaftStore->currentTerm, delBegin, delEnd);
+  sDebug("vgId:%d sync event %s commitIndex:%ld currentTerm:%lu log truncate, from %ld to %ld", ths->vgId,
+         syncUtilState2String(ths->state), ths->commitIndex, ths->pRaftStore->currentTerm, delBegin, delEnd);
   logStoreSimpleLog2("after syncNodeMakeLogSame", ths->pLogStore);
 
   return code;
@@ -880,6 +880,72 @@ int32_t syncNodeOnAppendEntriesSnapshotCb(SSyncNode* ths, SyncAppendEntries* pMs
     }
   } while (0);
 
+  // fake match2
+  //
+  // condition1:
+  // preIndex <= my commit index
+  //
+  // operation:
+  // if hasAppendEntries && pMsg->prevLogIndex == ths->commitIndex, append entry
+  // match my-commit-index or my-commit-index + 1
+  // no operation on log
+  do {
+    bool condition = (pMsg->term == ths->pRaftStore->currentTerm) && (ths->state == TAOS_SYNC_STATE_FOLLOWER) &&
+                     (pMsg->prevLogIndex <= ths->commitIndex);
+    if (condition) {
+      sTrace("recv SyncAppendEntries, fake match2, msg-prevLogIndex:%ld, my-commitIndex:%ld", pMsg->prevLogIndex,
+             ths->commitIndex);
+
+      SyncIndex matchIndex = ths->commitIndex;
+      bool      hasAppendEntries = pMsg->dataLen > 0;
+      if (hasAppendEntries && pMsg->prevLogIndex == ths->commitIndex) {
+        // append entry
+        SSyncRaftEntry* pAppendEntry = syncEntryDeserialize(pMsg->data, pMsg->dataLen);
+        ASSERT(pAppendEntry != NULL);
+
+        {
+          // has extra entries (> preIndex) in local log
+          SyncIndex logLastIndex = ths->pLogStore->syncLogLastIndex(ths->pLogStore);
+          bool      hasExtraEntries = logLastIndex > pMsg->prevLogIndex;
+
+          if (hasExtraEntries) {
+            // make log same, rollback deleted entries
+            code = syncNodeMakeLogSame(ths, pMsg);
+            ASSERT(code == 0);
+          }
+        }
+
+        code = ths->pLogStore->syncLogAppendEntry(ths->pLogStore, pAppendEntry);
+        ASSERT(code == 0);
+
+        // pre commit
+        code = syncNodePreCommit(ths, pAppendEntry);
+        ASSERT(code == 0);
+
+        matchIndex = pMsg->prevLogIndex + 1;
+
+        syncEntryDestory(pAppendEntry);
+      }
+
+      // prepare response msg
+      SyncAppendEntriesReply* pReply = syncAppendEntriesReplyBuild(ths->vgId);
+      pReply->srcId = ths->myRaftId;
+      pReply->destId = pMsg->srcId;
+      pReply->term = ths->pRaftStore->currentTerm;
+      pReply->privateTerm = ths->pNewNodeReceiver->privateTerm;
+      pReply->success = true;
+      pReply->matchIndex = matchIndex;
+
+      // send response
+      SRpcMsg rpcMsg;
+      syncAppendEntriesReply2RpcMsg(pReply, &rpcMsg);
+      syncNodeSendMsgById(&pReply->destId, ths, &rpcMsg);
+      syncAppendEntriesReplyDestroy(pReply);
+
+      return ret;
+    }
+  } while (0);
+
   // calculate logOK here, before will coredump, due to fake match
   bool logOK = syncNodeOnAppendEntriesLogOK(ths, pMsg);
 
@@ -995,8 +1061,10 @@ int32_t syncNodeOnAppendEntriesSnapshotCb(SSyncNode* ths, SyncAppendEntries* pMs
             SyncIndex commitEnd = snapshot.lastApplyIndex;
             ths->commitIndex = snapshot.lastApplyIndex;
 
-            sDebug("vgId:%d sync event %s currentTerm:%lu commit by snapshot from index:%ld to index:%ld", ths->vgId,
-                   syncUtilState2String(ths->state), ths->pRaftStore->currentTerm, commitBegin, commitEnd);
+            sDebug(
+                "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu commit by snapshot from index:%ld to index:%ld",
+                ths->vgId, syncUtilState2String(ths->state), ths->commitIndex, ths->pRaftStore->currentTerm,
+                commitBegin, commitEnd);
           }
 
           SyncIndex beginIndex = ths->commitIndex + 1;
diff --git a/source/libs/sync/src/syncAppendEntriesReply.c b/source/libs/sync/src/syncAppendEntriesReply.c
index 94fdcc2772..f934f9a268 100644
--- a/source/libs/sync/src/syncAppendEntriesReply.c
+++ b/source/libs/sync/src/syncAppendEntriesReply.c
@@ -190,21 +190,21 @@ int32_t syncNodeOnAppendEntriesReplySnapshotCb(SSyncNode* ths, SyncAppendEntries
         if (gRaftDetailLog) {
           char* s = snapshotSender2Str(pSender);
           sDebug(
-              "vgId:%d sync event %s currentTerm:%lu snapshot send to %s:%d start sender first time, "
+              "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu snapshot send to %s:%d start sender first time, "
               "lastApplyIndex:%ld "
               "lastApplyTerm:%lu "
               "lastConfigIndex:%ld privateTerm:%lu "
               "sender:%s",
-              ths->vgId, syncUtilState2String(ths->state), ths->pRaftStore->currentTerm, host, port,
+              ths->vgId, syncUtilState2String(ths->state), ths->commitIndex, ths->pRaftStore->currentTerm, host, port,
               pSender->snapshot.lastApplyIndex, pSender->snapshot.lastApplyTerm, pSender->snapshot.lastConfigIndex,
               pSender->privateTerm, s);
           taosMemoryFree(s);
         } else {
           sDebug(
-              "vgId:%d sync event %s currentTerm:%lu snapshot send to %s:%d start sender first time, "
+              "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu snapshot send to %s:%d start sender first time, "
               "lastApplyIndex:%ld "
               "lastApplyTerm:%lu lastConfigIndex:%ld privateTerm:%lu",
-              ths->vgId, syncUtilState2String(ths->state), ths->pRaftStore->currentTerm, host, port,
+              ths->vgId, syncUtilState2String(ths->state), ths->commitIndex, ths->pRaftStore->currentTerm, host, port,
               pSender->snapshot.lastApplyIndex, pSender->snapshot.lastApplyTerm, pSender->snapshot.lastConfigIndex,
               pSender->privateTerm);
         }
diff --git a/source/libs/sync/src/syncCommit.c b/source/libs/sync/src/syncCommit.c
index e3431307fd..d010728c78 100644
--- a/source/libs/sync/src/syncCommit.c
+++ b/source/libs/sync/src/syncCommit.c
@@ -56,9 +56,9 @@ void syncMaybeAdvanceCommitIndex(SSyncNode* pSyncNode) {
     SyncIndex commitEnd = snapshot.lastApplyIndex;
     pSyncNode->commitIndex = snapshot.lastApplyIndex;
 
-    sDebug("vgId:%d sync event %s currentTerm:%lu commit by snapshot from index:%ld to index:%ld", pSyncNode->vgId,
-           syncUtilState2String(pSyncNode->state), pSyncNode->pRaftStore->currentTerm, pSyncNode->commitIndex,
-           snapshot.lastApplyIndex);
+    sDebug("vgId:%d sync event %s commitIndex:%ld currentTerm:%lu commit by snapshot from index:%ld to index:%ld",
+           pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->commitIndex,
+           pSyncNode->pRaftStore->currentTerm, pSyncNode->commitIndex, snapshot.lastApplyIndex);
   }
 
   // update commit index
diff --git a/source/libs/sync/src/syncMain.c b/source/libs/sync/src/syncMain.c
index 200ac0e614..3e5dcfea42 100644
--- a/source/libs/sync/src/syncMain.c
+++ b/source/libs/sync/src/syncMain.c
@@ -420,6 +420,29 @@ int32_t syncGetSnapshotMeta(int64_t rid, struct SSnapshotMeta* sMeta) {
   return 0;
 }
 
+int32_t syncGetSnapshotMetaByIndex(int64_t rid, SyncIndex snapshotIndex, struct SSnapshotMeta* sMeta) {
+  SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
+  if (pSyncNode == NULL) {
+    return -1;
+  }
+  assert(rid == pSyncNode->rid);
+
+  ASSERT(pSyncNode->pRaftCfg->configIndexCount >= 1);
+  SyncIndex lastIndex = (pSyncNode->pRaftCfg->configIndexArr)[0];
+
+  for (int i = 0; i < pSyncNode->pRaftCfg->configIndexCount; ++i) {
+    if ((pSyncNode->pRaftCfg->configIndexArr)[i] > lastIndex &&
+        (pSyncNode->pRaftCfg->configIndexArr)[i] <= snapshotIndex) {
+      lastIndex = (pSyncNode->pRaftCfg->configIndexArr)[i];
+    }
+  }
+  sMeta->lastConfigIndex = lastIndex;
+  sTrace("sync get snapshot meta by index:%ld lastConfigIndex:%ld", snapshotIndex, sMeta->lastConfigIndex);
+
+  taosReleaseRef(tsNodeRefId, pSyncNode->rid);
+  return 0;
+}
+
 const char* syncGetMyRoleStr(int64_t rid) {
   const char* s = syncUtilState2String(syncGetMyRole(rid));
   return s;
@@ -575,9 +598,9 @@ int32_t syncPropose(int64_t rid, const SRpcMsg* pMsg, bool isWeak) {
     return -1;
   }
   assert(rid == pSyncNode->rid);
-  sDebug("vgId:%d sync event %s currentTerm:%lu propose msgType:%s,%d", pSyncNode->vgId,
-         syncUtilState2String(pSyncNode->state), pSyncNode->pRaftStore->currentTerm, TMSG_INFO(pMsg->msgType),
-         pMsg->msgType);
+  sDebug("vgId:%d sync event %s commitIndex:%ld currentTerm:%lu propose msgType:%s,%d", pSyncNode->vgId,
+         syncUtilState2String(pSyncNode->state), pSyncNode->commitIndex, pSyncNode->pRaftStore->currentTerm,
+         TMSG_INFO(pMsg->msgType), pMsg->msgType);
   ret = syncNodePropose(pSyncNode, pMsg, isWeak);
 
   taosReleaseRef(tsNodeRefId, pSyncNode->rid);
@@ -586,9 +609,9 @@ int32_t syncPropose(int64_t rid, const SRpcMsg* pMsg, bool isWeak) {
 
 int32_t syncNodePropose(SSyncNode* pSyncNode, const SRpcMsg* pMsg, bool isWeak) {
   int32_t ret = 0;
-  sDebug("vgId:%d sync event %s currentTerm:%lu propose msgType:%s,%d", pSyncNode->vgId,
-         syncUtilState2String(pSyncNode->state), pSyncNode->pRaftStore->currentTerm, TMSG_INFO(pMsg->msgType),
-         pMsg->msgType);
+  sDebug("vgId:%d sync event %s commitIndex:%ld currentTerm:%lu propose msgType:%s,%d", pSyncNode->vgId,
+         syncUtilState2String(pSyncNode->state), pSyncNode->commitIndex, pSyncNode->pRaftStore->currentTerm,
+         TMSG_INFO(pMsg->msgType), pMsg->msgType);
 
   if (pSyncNode->state == TAOS_SYNC_STATE_LEADER) {
     SRespStub stub;
@@ -834,8 +857,8 @@ SSyncNode* syncNodeOpen(const SSyncInfo* pOldSyncInfo) {
   // snapshot meta
   // pSyncNode->sMeta.lastConfigIndex = -1;
 
-  sDebug("vgId:%d sync event %s currentTerm:%lu sync open", pSyncNode->vgId, syncUtilState2String(pSyncNode->state),
-         pSyncNode->pRaftStore->currentTerm);
+  sDebug("vgId:%d sync event %s commitIndex:%ld currentTerm:%lu sync open", pSyncNode->vgId,
+         syncUtilState2String(pSyncNode->state), pSyncNode->commitIndex, pSyncNode->pRaftStore->currentTerm);
 
   return pSyncNode;
 }
@@ -882,8 +905,8 @@ void syncNodeStartStandBy(SSyncNode* pSyncNode) {
 }
 
 void syncNodeClose(SSyncNode* pSyncNode) {
-  sDebug("vgId:%d sync event %s currentTerm:%lu sync close", pSyncNode->vgId, syncUtilState2String(pSyncNode->state),
-         pSyncNode->pRaftStore->currentTerm);
+  sDebug("vgId:%d sync event %s commitIndex:%ld currentTerm:%lu sync close", pSyncNode->vgId,
+         syncUtilState2String(pSyncNode->state), pSyncNode->commitIndex, pSyncNode->pRaftStore->currentTerm);
 
   int32_t ret;
   assert(pSyncNode != NULL);
@@ -1322,9 +1345,9 @@ void syncNodeUpdateConfig(SSyncNode* pSyncNode, SSyncCfg* pNewConfig, SyncIndex
   SSyncSnapshotSender* oldSenders[TSDB_MAX_REPLICA];
   for (int i = 0; i < TSDB_MAX_REPLICA; ++i) {
     oldSenders[i] = (pSyncNode->senders)[i];
-    sDebug("vgId:%d sync event %s currentTerm:%lu save senders %d, %p, privateTerm:%lu", pSyncNode->vgId,
-           syncUtilState2String(pSyncNode->state), pSyncNode->pRaftStore->currentTerm, i, oldSenders[i],
-           oldSenders[i]->privateTerm);
+    sDebug("vgId:%d sync event %s commitIndex:%ld currentTerm:%lu save senders %d, %p, privateTerm:%lu",
+           pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->commitIndex,
+           pSyncNode->pRaftStore->currentTerm, i, oldSenders[i], oldSenders[i]->privateTerm);
     if (gRaftDetailLog) {
       ;
     }
@@ -1376,9 +1399,12 @@ void syncNodeUpdateConfig(SSyncNode* pSyncNode, SSyncCfg* pNewConfig, SyncIndex
         char     host[128];
         uint16_t port;
         syncUtilU642Addr((pSyncNode->replicasId)[i].addr, host, sizeof(host), &port);
-        sDebug("vgId:%d sync event %s currentTerm:%lu reset sender for %lu, newIndex:%d, %s:%d, %p, privateTerm:%lu",
-               pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->pRaftStore->currentTerm,
-               (pSyncNode->replicasId)[i].addr, i, host, port, oldSenders[j], oldSenders[j]->privateTerm);
+        sDebug(
+            "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu reset sender for %lu, newIndex:%d, %s:%d, %p, "
+            "privateTerm:%lu",
+            pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->commitIndex,
+            pSyncNode->pRaftStore->currentTerm, (pSyncNode->replicasId)[i].addr, i, host, port, oldSenders[j],
+            oldSenders[j]->privateTerm);
         (pSyncNode->senders)[i] = oldSenders[j];
         oldSenders[j] = NULL;
         reset = true;
@@ -1386,9 +1412,11 @@ void syncNodeUpdateConfig(SSyncNode* pSyncNode, SSyncCfg* pNewConfig, SyncIndex
         // reset replicaIndex
         int32_t oldreplicaIndex = (pSyncNode->senders)[i]->replicaIndex;
         (pSyncNode->senders)[i]->replicaIndex = i;
-        sDebug("vgId:%d sync event %s currentTerm:%lu udpate replicaIndex from %d to %d, %s:%d, %p, reset:%d",
-               pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->pRaftStore->currentTerm,
-               oldreplicaIndex, i, host, port, (pSyncNode->senders)[i], reset);
+        sDebug(
+            "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu udpate replicaIndex from %d to %d, %s:%d, %p, "
+            "reset:%d",
+            pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->commitIndex,
+            pSyncNode->pRaftStore->currentTerm, oldreplicaIndex, i, host, port, (pSyncNode->senders)[i], reset);
       }
     }
   }
@@ -1397,9 +1425,10 @@ void syncNodeUpdateConfig(SSyncNode* pSyncNode, SSyncCfg* pNewConfig, SyncIndex
   for (int i = 0; i < TSDB_MAX_REPLICA; ++i) {
     if ((pSyncNode->senders)[i] == NULL) {
       (pSyncNode->senders)[i] = snapshotSenderCreate(pSyncNode, i);
-      sDebug("vgId:%d sync event %s currentTerm:%lu create new sender %p replicaIndex:%d, privateTerm:%lu",
-             pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->pRaftStore->currentTerm,
-             (pSyncNode->senders)[i], i, (pSyncNode->senders)[i]->privateTerm);
+      sDebug(
+          "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu create new sender %p replicaIndex:%d, privateTerm:%lu",
+          pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->commitIndex,
+          pSyncNode->pRaftStore->currentTerm, (pSyncNode->senders)[i], i, (pSyncNode->senders)[i]->privateTerm);
     }
   }
 
@@ -1407,8 +1436,9 @@ void syncNodeUpdateConfig(SSyncNode* pSyncNode, SSyncCfg* pNewConfig, SyncIndex
   for (int i = 0; i < TSDB_MAX_REPLICA; ++i) {
     if (oldSenders[i] != NULL) {
       snapshotSenderDestroy(oldSenders[i]);
-      sDebug("vgId:%d sync event %s currentTerm:%lu delete old sender %p replicaIndex:%d", pSyncNode->vgId,
-             syncUtilState2String(pSyncNode->state), pSyncNode->pRaftStore->currentTerm, oldSenders[i], i);
+      sDebug("vgId:%d sync event %s commitIndex:%ld currentTerm:%lu delete old sender %p replicaIndex:%d",
+             pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->commitIndex,
+             pSyncNode->pRaftStore->currentTerm, oldSenders[i], i);
       oldSenders[i] = NULL;
     }
   }
@@ -1479,10 +1509,11 @@ void syncNodeUpdateTerm(SSyncNode* pSyncNode, SyncTerm term) {
 
 void syncNodeBecomeFollower(SSyncNode* pSyncNode, const char* debugStr) {
   sDebug(
-      "vgId:%d sync event %s currentTerm:%lu become follower, isStandBy:%d, replicaNum:%d, "
+      "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu become follower, isStandBy:%d, replicaNum:%d, "
       "restoreFinish:%d, %s",
-      pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->pRaftStore->currentTerm,
-      pSyncNode->pRaftCfg->isStandBy, pSyncNode->replicaNum, pSyncNode->restoreFinish, debugStr);
+      pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->commitIndex,
+      pSyncNode->pRaftStore->currentTerm, pSyncNode->pRaftCfg->isStandBy, pSyncNode->replicaNum,
+      pSyncNode->restoreFinish, debugStr);
 
   // maybe clear leader cache
   if (pSyncNode->state == TAOS_SYNC_STATE_LEADER) {
@@ -1519,9 +1550,12 @@ void syncNodeBecomeLeader(SSyncNode* pSyncNode, const char* debugStr) {
   // reset restoreFinish
   pSyncNode->restoreFinish = false;
 
-  sDebug("vgId:%d sync event %s currentTerm:%lu become leader, isStandBy:%d, replicaNum:%d, restoreFinish:%d, %s",
-         pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->pRaftStore->currentTerm,
-         pSyncNode->pRaftCfg->isStandBy, pSyncNode->replicaNum, pSyncNode->restoreFinish, debugStr);
+  sDebug(
+      "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu become leader, isStandBy:%d, replicaNum:%d, "
+      "restoreFinish:%d, %s",
+      pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->commitIndex,
+      pSyncNode->pRaftStore->currentTerm, pSyncNode->pRaftCfg->isStandBy, pSyncNode->replicaNum,
+      pSyncNode->restoreFinish, debugStr);
 
   // state change
   pSyncNode->state = TAOS_SYNC_STATE_LEADER;
@@ -2095,14 +2129,15 @@ const char* syncStr(ESyncState state) {
 static int32_t syncDoLeaderTransfer(SSyncNode* ths, SRpcMsg* pRpcMsg, SSyncRaftEntry* pEntry) {
   SyncLeaderTransfer* pSyncLeaderTransfer = syncLeaderTransferFromRpcMsg2(pRpcMsg);
 
-  sDebug("vgId:%d sync event %s currentTerm:%lu begin leader transfer", ths->vgId, syncUtilState2String(ths->state),
-         ths->pRaftStore->currentTerm);
+  sDebug("vgId:%d sync event %s commitIndex:%ld currentTerm:%lu begin leader transfer", ths->vgId,
+         syncUtilState2String(ths->state), ths->commitIndex, ths->pRaftStore->currentTerm);
 
   if (strcmp(pSyncLeaderTransfer->newNodeInfo.nodeFqdn, ths->myNodeInfo.nodeFqdn) == 0 &&
       pSyncLeaderTransfer->newNodeInfo.nodePort == ths->myNodeInfo.nodePort) {
-    sDebug("vgId:%d sync event %s currentTerm:%lu maybe leader transfer to %s:%d %lu", ths->vgId,
-           syncUtilState2String(ths->state), ths->pRaftStore->currentTerm, pSyncLeaderTransfer->newNodeInfo.nodeFqdn,
-           pSyncLeaderTransfer->newNodeInfo.nodePort, pSyncLeaderTransfer->newLeaderId.addr);
+    sDebug("vgId:%d sync event %s commitIndex:%ld currentTerm:%lu maybe leader transfer to %s:%d %lu", ths->vgId,
+           syncUtilState2String(ths->state), ths->commitIndex, ths->pRaftStore->currentTerm,
+           pSyncLeaderTransfer->newNodeInfo.nodeFqdn, pSyncLeaderTransfer->newNodeInfo.nodePort,
+           pSyncLeaderTransfer->newLeaderId.addr);
 
     // reset elect timer now!
     int32_t electMS = 1;
@@ -2180,8 +2215,16 @@ static int32_t syncNodeConfigChange(SSyncNode* ths, SRpcMsg* pRpcMsg, SSyncRaftE
 
     // change isStandBy to normal
     if (!isDrop) {
-      char tmpbuf[128];
-      snprintf(tmpbuf, sizeof(tmpbuf), "config change from %d to %d", oldSyncCfg.replicaNum, newSyncCfg.replicaNum);
+      char  tmpbuf[512];
+      char* oldStr = syncCfg2Str(&oldSyncCfg);
+      char* newStr = syncCfg2Str(&newSyncCfg);
+      syncUtilJson2Line(oldStr);
+      syncUtilJson2Line(newStr);
+      snprintf(tmpbuf, sizeof(tmpbuf), "config change from %d to %d, index:%ld, %s  -->  %s", oldSyncCfg.replicaNum,
+      newSyncCfg.replicaNum, pEntry->index, oldStr, newStr);
+      taosMemoryFree(oldStr);
+      taosMemoryFree(newStr);
+
       if (ths->state == TAOS_SYNC_STATE_LEADER) {
         syncNodeBecomeLeader(ths, tmpbuf);
       } else {
@@ -2189,8 +2232,16 @@ static int32_t syncNodeConfigChange(SSyncNode* ths, SRpcMsg* pRpcMsg, SSyncRaftE
       }
     }
   } else {
-    char tmpbuf[128];
-    snprintf(tmpbuf, sizeof(tmpbuf), "config change2 from %d to %d", oldSyncCfg.replicaNum, newSyncCfg.replicaNum);
+    char  tmpbuf[512];
+    char* oldStr = syncCfg2Str(&oldSyncCfg);
+    char* newStr = syncCfg2Str(&newSyncCfg);
+    syncUtilJson2Line(oldStr);
+    syncUtilJson2Line(newStr);
+    snprintf(tmpbuf, sizeof(tmpbuf), "config change2 from %d to %d, index:%ld, %s  -->  %s", oldSyncCfg.replicaNum,
+    newSyncCfg.replicaNum, pEntry->index, oldStr, newStr);
+    taosMemoryFree(oldStr);
+    taosMemoryFree(newStr);
+
     syncNodeBecomeFollower(ths, tmpbuf);
   }
 
@@ -2224,9 +2275,10 @@ static int32_t syncNodeConfigChange(SSyncNode* ths, SRpcMsg* pRpcMsg, SSyncRaftE
 int32_t syncNodeCommit(SSyncNode* ths, SyncIndex beginIndex, SyncIndex endIndex, uint64_t flag) {
   int32_t    code = 0;
   ESyncState state = flag;
-  sDebug("vgId:%d sync event %s currentTerm:%lu commit by wal from index:%" PRId64 " to index:%" PRId64 ", %s",
-         ths->vgId, syncUtilState2String(ths->state), ths->pRaftStore->currentTerm, beginIndex, endIndex,
-         syncUtilState2String(state));
+  sDebug("vgId:%d sync event %s commitIndex:%ld currentTerm:%lu commit by wal from index:%" PRId64 " to index:%" PRId64
+         ", %s",
+         ths->vgId, syncUtilState2String(ths->state), ths->commitIndex, ths->pRaftStore->currentTerm, beginIndex,
+         endIndex, syncUtilState2String(state));
 
   // execute fsm
   if (ths->pFsm != NULL) {
@@ -2268,15 +2320,16 @@ int32_t syncNodeCommit(SSyncNode* ths, SyncIndex beginIndex, SyncIndex endIndex,
         }
 
         // restore finish
+        // if only snapshot, a noop entry will be append, so syncLogLastIndex is always ok
         if (pEntry->index == ths->pLogStore->syncLogLastIndex(ths->pLogStore)) {
           if (ths->restoreFinish == false) {
             if (ths->pFsm->FpRestoreFinishCb != NULL) {
               ths->pFsm->FpRestoreFinishCb(ths->pFsm);
             }
             ths->restoreFinish = true;
-            sDebug("vgId:%d sync event %s currentTerm:%lu restore finish, %s, index:%ld", ths->vgId,
-                   syncUtilState2String(ths->state), ths->pRaftStore->currentTerm, syncUtilState2String(ths->state),
-                   pEntry->index);
+            sDebug("vgId:%d sync event %s commitIndex:%ld currentTerm:%lu restore finish, %s, index:%ld", ths->vgId,
+                   syncUtilState2String(ths->state), ths->commitIndex, ths->pRaftStore->currentTerm,
+                   syncUtilState2String(ths->state), pEntry->index);
           }
         }
 
diff --git a/source/libs/sync/src/syncRaftCfg.c b/source/libs/sync/src/syncRaftCfg.c
index 45e00aca2c..2d51f1f6f0 100644
--- a/source/libs/sync/src/syncRaftCfg.c
+++ b/source/libs/sync/src/syncRaftCfg.c
@@ -85,16 +85,11 @@ cJSON *syncCfg2Json(SSyncCfg *pSyncCfg) {
   }
 
   return pRoot;
-  /*
-  cJSON *pJson = cJSON_CreateObject();
-  cJSON_AddItemToObject(pJson, "SSyncCfg", pRoot);
-  return pJson;
-  */
 }
 
 char *syncCfg2Str(SSyncCfg *pSyncCfg) {
   cJSON *pJson = syncCfg2Json(pSyncCfg);
-  char * serialized = cJSON_Print(pJson);
+  char  *serialized = cJSON_Print(pJson);
   cJSON_Delete(pJson);
   return serialized;
 }
@@ -154,6 +149,16 @@ cJSON *raftCfg2Json(SRaftCfg *pRaftCfg) {
   snprintf(buf64, sizeof(buf64), "%ld", pRaftCfg->lastConfigIndex);
   cJSON_AddStringToObject(pRoot, "lastConfigIndex", buf64);
 
+  cJSON_AddNumberToObject(pRoot, "configIndexCount", pRaftCfg->configIndexCount);
+  cJSON *pIndexArr = cJSON_CreateArray();
+  cJSON_AddItemToObject(pRoot, "configIndexArr", pIndexArr);
+  for (int i = 0; i < pRaftCfg->configIndexCount; ++i) {
+    snprintf(buf64, sizeof(buf64), "%ld", (pRaftCfg->configIndexArr)[i]);
+    cJSON *pIndexObj = cJSON_CreateObject();
+    cJSON_AddStringToObject(pIndexObj, "index", buf64);
+    cJSON_AddItemToArray(pIndexArr, pIndexObj);
+  }
+
   cJSON *pJson = cJSON_CreateObject();
   cJSON_AddItemToObject(pJson, "RaftCfg", pRoot);
   return pJson;
@@ -161,7 +166,7 @@ cJSON *raftCfg2Json(SRaftCfg *pRaftCfg) {
 
 char *raftCfg2Str(SRaftCfg *pRaftCfg) {
   cJSON *pJson = raftCfg2Json(pRaftCfg);
-  char * serialized = cJSON_Print(pJson);
+  char  *serialized = cJSON_Print(pJson);
   cJSON_Delete(pJson);
   return serialized;
 }
@@ -177,6 +182,9 @@ int32_t raftCfgCreateFile(SSyncCfg *pCfg, SRaftCfgMeta meta, const char *path) {
   raftCfg.isStandBy = meta.isStandBy;
   raftCfg.snapshotEnable = meta.snapshotEnable;
   raftCfg.lastConfigIndex = meta.lastConfigIndex;
+  raftCfg.configIndexCount = 1;
+  memset(raftCfg.configIndexArr, 0, sizeof(raftCfg.configIndexArr));
+  raftCfg.configIndexArr[0] = -1;
   char *s = raftCfg2Str(&raftCfg);
 
   char buf[CONFIG_FILE_LEN] = {0};
@@ -207,7 +215,24 @@ int32_t raftCfgFromJson(const cJSON *pRoot, SRaftCfg *pRaftCfg) {
   cJSON *pJsonLastConfigIndex = cJSON_GetObjectItem(pJson, "lastConfigIndex");
   pRaftCfg->lastConfigIndex = atoll(cJSON_GetStringValue(pJsonLastConfigIndex));
 
-  cJSON * pJsonSyncCfg = cJSON_GetObjectItem(pJson, "SSyncCfg");
+  cJSON *pJsonConfigIndexCount = cJSON_GetObjectItem(pJson, "configIndexCount");
+  pRaftCfg->configIndexCount = cJSON_GetNumberValue(pJsonConfigIndexCount);
+
+  cJSON *pIndexArr = cJSON_GetObjectItem(pJson, "configIndexArr");
+  int    arraySize = cJSON_GetArraySize(pIndexArr);
+  assert(arraySize == pRaftCfg->configIndexCount);
+
+  memset(pRaftCfg->configIndexArr, 0, sizeof(pRaftCfg->configIndexArr));
+  for (int i = 0; i < arraySize; ++i) {
+    cJSON *pIndexObj = cJSON_GetArrayItem(pIndexArr, i);
+    assert(pIndexObj != NULL);
+
+    cJSON *pIndex = cJSON_GetObjectItem(pIndexObj, "index");
+    assert(cJSON_IsString(pIndex));
+    (pRaftCfg->configIndexArr)[i] = atoll(pIndex->valuestring);
+  }
+
+  cJSON  *pJsonSyncCfg = cJSON_GetObjectItem(pJson, "SSyncCfg");
   int32_t code = syncCfgFromJson(pJsonSyncCfg, &(pRaftCfg->cfg));
   ASSERT(code == 0);
 
diff --git a/source/libs/sync/src/syncRaftLog.c b/source/libs/sync/src/syncRaftLog.c
index 308edc0b93..87dfef5fdd 100644
--- a/source/libs/sync/src/syncRaftLog.c
+++ b/source/libs/sync/src/syncRaftLog.c
@@ -163,10 +163,12 @@ static int32_t raftLogAppendEntry(struct SSyncLogStore* pLogStore, SSyncRaftEntr
 
   walFsync(pWal, true);
 
-  sDebug("vgId:%d sync event %s currentTerm:%lu write index:%ld, isStandBy:%d, msgType:%s,%d, originalRpcType:%s,%d",
-         pData->pSyncNode->vgId, syncUtilState2String(pData->pSyncNode->state),
-         pData->pSyncNode->pRaftStore->currentTerm, pEntry->index, pData->pSyncNode->pRaftCfg->isStandBy,
-         TMSG_INFO(pEntry->msgType), pEntry->msgType, TMSG_INFO(pEntry->originalRpcType), pEntry->originalRpcType);
+  sDebug(
+      "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu write index:%ld, isStandBy:%d, msgType:%s,%d, "
+      "originalRpcType:%s,%d",
+      pData->pSyncNode->vgId, syncUtilState2String(pData->pSyncNode->state), pData->pSyncNode->commitIndex,
+      pData->pSyncNode->pRaftStore->currentTerm, pEntry->index, pData->pSyncNode->pRaftCfg->isStandBy,
+      TMSG_INFO(pEntry->msgType), pEntry->msgType, TMSG_INFO(pEntry->originalRpcType), pEntry->originalRpcType);
 
   return code;
 }
@@ -323,11 +325,11 @@ int32_t logStoreAppendEntry(SSyncLogStore* pLogStore, SSyncRaftEntry* pEntry) {
   walFsync(pWal, true);
 
   sDebug(
-      "vgId:%d sync event %s currentTerm:%lu old write index:%ld, isStandBy:%d, msgType:%s,%d, "
+      "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu old write index:%ld, isStandBy:%d, msgType:%s,%d, "
       "originalRpcType:%s,%d",
-      pData->pSyncNode->vgId, syncUtilState2String(pData->pSyncNode->state), pData->pSyncNode->pRaftStore->currentTerm,
-      pEntry->index, pData->pSyncNode->pRaftCfg->isStandBy, TMSG_INFO(pEntry->msgType), pEntry->msgType,
-      TMSG_INFO(pEntry->originalRpcType), pEntry->originalRpcType);
+      pData->pSyncNode->vgId, syncUtilState2String(pData->pSyncNode->state), pData->pSyncNode->commitIndex,
+      pData->pSyncNode->pRaftStore->currentTerm, pEntry->index, pData->pSyncNode->pRaftCfg->isStandBy,
+      TMSG_INFO(pEntry->msgType), pEntry->msgType, TMSG_INFO(pEntry->originalRpcType), pEntry->originalRpcType);
 
   return code;
 }
@@ -408,20 +410,18 @@ SyncTerm logStoreLastTerm(SSyncLogStore* pLogStore) {
 }
 
 int32_t logStoreUpdateCommitIndex(SSyncLogStore* pLogStore, SyncIndex index) {
-  /*
-    SSyncLogStoreData* pData = pLogStore->data;
-    SWal*              pWal = pData->pWal;
-    // assert(walCommit(pWal, index) == 0);
-    int32_t code = walCommit(pWal, index);
-    if (code != 0) {
-      int32_t     err = terrno;
-      const char* errStr = tstrerror(err);
-      int32_t     linuxErr = errno;
-      const char* linuxErrMsg = strerror(errno);
-      sError("walCommit error, err:%d %X, msg:%s, linuxErr:%d, linuxErrMsg:%s", err, err, errStr, linuxErr,
-    linuxErrMsg); ASSERT(0);
-    }
-   */
+  SSyncLogStoreData* pData = pLogStore->data;
+  SWal*              pWal = pData->pWal;
+  // assert(walCommit(pWal, index) == 0);
+  int32_t code = walCommit(pWal, index);
+  if (code != 0) {
+    int32_t     err = terrno;
+    const char* errStr = tstrerror(err);
+    int32_t     linuxErr = errno;
+    const char* linuxErrMsg = strerror(errno);
+    sError("walCommit error, err:%d %X, msg:%s, linuxErr:%d, linuxErrMsg:%s", err, err, errStr, linuxErr, linuxErrMsg);
+    ASSERT(0);
+  }
   return 0;
 }
 
diff --git a/source/libs/sync/src/syncRespMgr.c b/source/libs/sync/src/syncRespMgr.c
index cc4004a6bd..551c2611b0 100644
--- a/source/libs/sync/src/syncRespMgr.c
+++ b/source/libs/sync/src/syncRespMgr.c
@@ -46,10 +46,11 @@ int64_t syncRespMgrAdd(SSyncRespMgr *pObj, SRespStub *pStub) {
   taosHashPut(pObj->pRespHash, &keyCode, sizeof(keyCode), pStub, sizeof(SRespStub));
 
   SSyncNode *pSyncNode = pObj->data;
-  sDebug("vgId:%d sync event %s currentTerm:%lu resp mgr add, msgType:%s,%d seq:%lu handle:%p ahandle:%p",
-         pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->pRaftStore->currentTerm,
-         TMSG_INFO(pStub->rpcMsg.msgType), pStub->rpcMsg.msgType, keyCode, pStub->rpcMsg.info.handle,
-         pStub->rpcMsg.info.ahandle);
+  sDebug(
+      "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu resp mgr add, msgType:%s,%d seq:%lu handle:%p ahandle:%p",
+      pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->commitIndex,
+      pSyncNode->pRaftStore->currentTerm, TMSG_INFO(pStub->rpcMsg.msgType), pStub->rpcMsg.msgType, keyCode,
+      pStub->rpcMsg.info.handle, pStub->rpcMsg.info.ahandle);
 
   taosThreadMutexUnlock(&(pObj->mutex));
   return keyCode;
@@ -72,10 +73,12 @@ int32_t syncRespMgrGet(SSyncRespMgr *pObj, uint64_t index, SRespStub *pStub) {
     memcpy(pStub, pTmp, sizeof(SRespStub));
 
     SSyncNode *pSyncNode = pObj->data;
-    sDebug("vgId:%d sync event %s currentTerm:%lu resp mgr get, msgType:%s,%d seq:%lu handle:%p ahandle:%p",
-           pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->pRaftStore->currentTerm,
-           TMSG_INFO(pStub->rpcMsg.msgType), pStub->rpcMsg.msgType, index, pStub->rpcMsg.info.handle,
-           pStub->rpcMsg.info.ahandle);
+    sDebug(
+        "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu resp mgr get, msgType:%s,%d seq:%lu handle:%p "
+        "ahandle:%p",
+        pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->commitIndex,
+        pSyncNode->pRaftStore->currentTerm, TMSG_INFO(pStub->rpcMsg.msgType), pStub->rpcMsg.msgType, index,
+        pStub->rpcMsg.info.handle, pStub->rpcMsg.info.ahandle);
 
     taosThreadMutexUnlock(&(pObj->mutex));
     return 1;  // get one object
@@ -92,10 +95,12 @@ int32_t syncRespMgrGetAndDel(SSyncRespMgr *pObj, uint64_t index, SRespStub *pStu
     memcpy(pStub, pTmp, sizeof(SRespStub));
 
     SSyncNode *pSyncNode = pObj->data;
-    sDebug("vgId:%d sync event %s currentTerm:%lu resp mgr get and del, msgType:%s,%d seq:%lu handle:%p ahandle:%p",
-           pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->pRaftStore->currentTerm,
-           TMSG_INFO(pStub->rpcMsg.msgType), pStub->rpcMsg.msgType, index, pStub->rpcMsg.info.handle,
-           pStub->rpcMsg.info.ahandle);
+    sDebug(
+        "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu resp mgr get and del, msgType:%s,%d seq:%lu handle:%p "
+        "ahandle:%p",
+        pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->commitIndex,
+        pSyncNode->pRaftStore->currentTerm, TMSG_INFO(pStub->rpcMsg.msgType), pStub->rpcMsg.msgType, index,
+        pStub->rpcMsg.info.handle, pStub->rpcMsg.info.ahandle);
 
     taosHashRemove(pObj->pRespHash, &index, sizeof(index));
     taosThreadMutexUnlock(&(pObj->mutex));
diff --git a/source/libs/sync/src/syncSnapshot.c b/source/libs/sync/src/syncSnapshot.c
index 219a1a5a7d..4973d36295 100644
--- a/source/libs/sync/src/syncSnapshot.c
+++ b/source/libs/sync/src/syncSnapshot.c
@@ -141,21 +141,23 @@ void snapshotSenderStart(SSyncSnapshotSender *pSender) {
   if (gRaftDetailLog) {
     char *msgStr = syncSnapshotSend2Str(pMsg);
     sDebug(
-        "vgId:%d sync event %s currentTerm:%lu snapshot send to %s:%d begin seq:%d ack:%d lastApplyIndex:%ld "
+        "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu snapshot send to %s:%d begin seq:%d ack:%d "
+        "lastApplyIndex:%ld "
         "lastApplyTerm:%lu "
         "lastConfigIndex:%ld privateTerm:%lu send "
         "msg:%s",
-        pSender->pSyncNode->vgId, syncUtilState2String(pSender->pSyncNode->state),
+        pSender->pSyncNode->vgId, syncUtilState2String(pSender->pSyncNode->state), pSender->pSyncNode->commitIndex,
         pSender->pSyncNode->pRaftStore->currentTerm, host, port, pSender->seq, pSender->ack,
         pSender->snapshot.lastApplyIndex, pSender->snapshot.lastApplyTerm, pSender->snapshot.lastConfigIndex,
         pSender->privateTerm, msgStr);
     taosMemoryFree(msgStr);
   } else {
     sDebug(
-        "vgId:%d sync event %s currentTerm:%lu snapshot send to %s:%d begin seq:%d ack:%d lastApplyIndex:%ld "
+        "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu snapshot send to %s:%d begin seq:%d ack:%d "
+        "lastApplyIndex:%ld "
         "lastApplyTerm:%lu "
         "lastConfigIndex:%ld privateTerm:%lu",
-        pSender->pSyncNode->vgId, syncUtilState2String(pSender->pSyncNode->state),
+        pSender->pSyncNode->vgId, syncUtilState2String(pSender->pSyncNode->state), pSender->pSyncNode->commitIndex,
         pSender->pSyncNode->pRaftStore->currentTerm, host, port, pSender->seq, pSender->ack,
         pSender->snapshot.lastApplyIndex, pSender->snapshot.lastApplyTerm, pSender->snapshot.lastConfigIndex,
         pSender->privateTerm);
@@ -285,31 +287,34 @@ int32_t snapshotSend(SSyncSnapshotSender *pSender) {
     if (gRaftDetailLog) {
       char *msgStr = syncSnapshotSend2Str(pMsg);
       sDebug(
-          "vgId:%d sync event %s currentTerm:%lu snapshot send to %s:%d finish seq:%d ack:%d lastApplyIndex:%ld "
+          "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu snapshot send to %s:%d finish seq:%d ack:%d "
+          "lastApplyIndex:%ld "
           "lastApplyTerm:%lu "
           "lastConfigIndex:%ld privateTerm:%lu send "
           "msg:%s",
-          pSender->pSyncNode->vgId, syncUtilState2String(pSender->pSyncNode->state),
+          pSender->pSyncNode->vgId, syncUtilState2String(pSender->pSyncNode->state), pSender->pSyncNode->commitIndex,
           pSender->pSyncNode->pRaftStore->currentTerm, host, port, pSender->seq, pSender->ack,
           pSender->snapshot.lastApplyIndex, pSender->snapshot.lastApplyTerm, pSender->snapshot.lastConfigIndex,
           pSender->privateTerm, msgStr);
       taosMemoryFree(msgStr);
     } else {
       sDebug(
-          "vgId:%d sync event %s currentTerm:%lu snapshot send to %s:%d finish seq:%d ack:%d lastApplyIndex:%ld "
+          "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu snapshot send to %s:%d finish seq:%d ack:%d "
+          "lastApplyIndex:%ld "
           "lastApplyTerm:%lu "
           "lastConfigIndex:%ld privateTerm:%lu",
-          pSender->pSyncNode->vgId, syncUtilState2String(pSender->pSyncNode->state),
+          pSender->pSyncNode->vgId, syncUtilState2String(pSender->pSyncNode->state), pSender->pSyncNode->commitIndex,
           pSender->pSyncNode->pRaftStore->currentTerm, host, port, pSender->seq, pSender->ack,
           pSender->snapshot.lastApplyIndex, pSender->snapshot.lastApplyTerm, pSender->snapshot.lastConfigIndex,
           pSender->privateTerm);
     }
   } else {
     sDebug(
-        "vgId:%d sync event %s currentTerm:%lu snapshot send to %s:%d sending seq:%d ack:%d lastApplyIndex:%ld "
+        "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu snapshot send to %s:%d sending seq:%d ack:%d "
+        "lastApplyIndex:%ld "
         "lastApplyTerm:%lu "
         "lastConfigIndex:%ld privateTerm:%lu",
-        pSender->pSyncNode->vgId, syncUtilState2String(pSender->pSyncNode->state),
+        pSender->pSyncNode->vgId, syncUtilState2String(pSender->pSyncNode->state), pSender->pSyncNode->commitIndex,
         pSender->pSyncNode->pRaftStore->currentTerm, host, port, pSender->seq, pSender->ack,
         pSender->snapshot.lastApplyIndex, pSender->snapshot.lastApplyTerm, pSender->snapshot.lastConfigIndex,
         pSender->privateTerm);
@@ -344,16 +349,19 @@ int32_t snapshotReSend(SSyncSnapshotSender *pSender) {
     if (gRaftDetailLog) {
       char *msgStr = syncSnapshotSend2Str(pMsg);
       sDebug(
-          "vgId:%d sync event %s currentTerm:%lu snapshot send to %s:%d resend seq:%d ack:%d privateTerm:%lu send "
+          "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu snapshot send to %s:%d resend seq:%d ack:%d "
+          "privateTerm:%lu send "
           "msg:%s",
-          pSender->pSyncNode->vgId, syncUtilState2String(pSender->pSyncNode->state),
+          pSender->pSyncNode->vgId, syncUtilState2String(pSender->pSyncNode->state), pSender->pSyncNode->commitIndex,
           pSender->pSyncNode->pRaftStore->currentTerm, host, port, pSender->seq, pSender->ack, pSender->privateTerm,
           msgStr);
       taosMemoryFree(msgStr);
     } else {
-      sDebug("vgId:%d sync event %s currentTerm:%lu snapshot send to %s:%d resend seq:%d ack:%d privateTerm:%lu",
-             pSender->pSyncNode->vgId, syncUtilState2String(pSender->pSyncNode->state),
-             pSender->pSyncNode->pRaftStore->currentTerm, host, port, pSender->seq, pSender->ack, pSender->privateTerm);
+      sDebug(
+          "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu snapshot send to %s:%d resend seq:%d ack:%d "
+          "privateTerm:%lu",
+          pSender->pSyncNode->vgId, syncUtilState2String(pSender->pSyncNode->state), pSender->pSyncNode->commitIndex,
+          pSender->pSyncNode->pRaftStore->currentTerm, host, port, pSender->seq, pSender->ack, pSender->privateTerm);
     }
 
     syncSnapshotSendDestroy(pMsg);
@@ -413,7 +421,7 @@ cJSON *snapshotSender2Json(SSyncSnapshotSender *pSender) {
 
 char *snapshotSender2Str(SSyncSnapshotSender *pSender) {
   cJSON *pJson = snapshotSender2Json(pSender);
-  char  *serialized = cJSON_Print(pJson);
+  char * serialized = cJSON_Print(pJson);
   cJSON_Delete(pJson);
   return serialized;
 }
@@ -534,7 +542,7 @@ cJSON *snapshotReceiver2Json(SSyncSnapshotReceiver *pReceiver) {
     cJSON_AddStringToObject(pFromId, "addr", u64buf);
     {
       uint64_t u64 = pReceiver->fromId.addr;
-      cJSON   *pTmp = pFromId;
+      cJSON *  pTmp = pFromId;
       char     host[128] = {0};
       uint16_t port;
       syncUtilU642Addr(u64, host, sizeof(host), &port);
@@ -558,7 +566,7 @@ cJSON *snapshotReceiver2Json(SSyncSnapshotReceiver *pReceiver) {
 
 char *snapshotReceiver2Str(SSyncSnapshotReceiver *pReceiver) {
   cJSON *pJson = snapshotReceiver2Json(pReceiver);
-  char  *serialized = cJSON_Print(pJson);
+  char * serialized = cJSON_Print(pJson);
   cJSON_Delete(pJson);
   return serialized;
 }
@@ -586,19 +594,23 @@ int32_t syncNodeOnSnapshotSendCb(SSyncNode *pSyncNode, SyncSnapshotSend *pMsg) {
         if (gRaftDetailLog) {
           char *msgStr = syncSnapshotSend2Str(pMsg);
           sDebug(
-              "vgId:%d sync event %s currentTerm:%lu snapshot recv from %s:%d begin ack:%d, lastIndex:%ld, "
+              "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu snapshot recv from %s:%d begin ack:%d, "
+              "lastIndex:%ld, "
               "lastTerm:%lu, "
               "lastConfigIndex:%ld, privateTerm:%lu, recv msg:%s",
-              pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->pRaftStore->currentTerm, host, port,
-              pReceiver->ack, pMsg->lastIndex, pMsg->lastTerm, pMsg->lastConfigIndex, pReceiver->privateTerm, msgStr);
+              pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->commitIndex,
+              pSyncNode->pRaftStore->currentTerm, host, port, pReceiver->ack, pMsg->lastIndex, pMsg->lastTerm,
+              pMsg->lastConfigIndex, pReceiver->privateTerm, msgStr);
           taosMemoryFree(msgStr);
         } else {
           sDebug(
-              "vgId:%d sync event %s currentTerm:%lu snapshot recv from %s:%d begin ack:%d, lastIndex:%ld, "
+              "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu snapshot recv from %s:%d begin ack:%d, "
+              "lastIndex:%ld, "
               "lastTerm:%lu, "
               "lastConfigIndex:%ld privateTerm:%lu",
-              pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->pRaftStore->currentTerm, host, port,
-              pReceiver->ack, pMsg->lastIndex, pMsg->lastTerm, pMsg->lastConfigIndex, pReceiver->privateTerm);
+              pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->commitIndex,
+              pSyncNode->pRaftStore->currentTerm, host, port, pReceiver->ack, pMsg->lastIndex, pMsg->lastTerm,
+              pMsg->lastConfigIndex, pReceiver->privateTerm);
         }
 
       } else if (pMsg->seq == SYNC_SNAPSHOT_SEQ_END) {
@@ -611,7 +623,8 @@ int32_t syncNodeOnSnapshotSendCb(SSyncNode *pSyncNode, SyncSnapshotSend *pMsg) {
 
         // maybe update lastconfig
         if (pMsg->lastConfigIndex >= SYNC_INDEX_BEGIN) {
-          int32_t oldReplicaNum = pSyncNode->replicaNum;
+          // int32_t  oldReplicaNum = pSyncNode->replicaNum;
+          SSyncCfg oldSyncCfg = pSyncNode->pRaftCfg->cfg;
 
           // update new config myIndex
           SSyncCfg newSyncCfg = pMsg->lastConfig;
@@ -635,24 +648,34 @@ int32_t syncNodeOnSnapshotSendCb(SSyncNode *pSyncNode, SyncSnapshotSend *pMsg) {
           bool isDrop;
           if (IamInNew) {
             sDebug(
-                "vgId:%d sync event %s currentTerm:%lu update config by snapshot, lastIndex:%ld, lastTerm:%lu, "
+                "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu update config by snapshot, lastIndex:%ld, "
+                "lastTerm:%lu, "
                 "lastConfigIndex:%ld ",
-                pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->pRaftStore->currentTerm,
-                pMsg->lastIndex, pMsg->lastTerm, pMsg->lastConfigIndex);
+                pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->commitIndex,
+                pSyncNode->pRaftStore->currentTerm, pMsg->lastIndex, pMsg->lastTerm, pMsg->lastConfigIndex);
             syncNodeUpdateConfig(pSyncNode, &newSyncCfg, pMsg->lastConfigIndex, &isDrop);
           } else {
             sDebug(
-                "vgId:%d sync event %s currentTerm:%lu do not update config by snapshot, I am not in newCfg, "
+                "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu do not update config by snapshot, I am not in "
+                "newCfg, "
                 "lastIndex:%ld, lastTerm:%lu, "
                 "lastConfigIndex:%ld ",
-                pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->pRaftStore->currentTerm,
-                pMsg->lastIndex, pMsg->lastTerm, pMsg->lastConfigIndex);
+                pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->commitIndex,
+                pSyncNode->pRaftStore->currentTerm, pMsg->lastIndex, pMsg->lastTerm, pMsg->lastConfigIndex);
           }
 
           // change isStandBy to normal
           if (!isDrop) {
-            char tmpbuf[128];
-            snprintf(tmpbuf, sizeof(tmpbuf), "config change3 from %d to %d", oldReplicaNum, newSyncCfg.replicaNum);
+            char  tmpbuf[512];
+            char *oldStr = syncCfg2Str(&oldSyncCfg);
+            char *newStr = syncCfg2Str(&newSyncCfg);
+            syncUtilJson2Line(oldStr);
+            syncUtilJson2Line(newStr);
+            snprintf(tmpbuf, sizeof(tmpbuf), "config change3 from %d to %d, index:%ld, %s  -->  %s",
+                     oldSyncCfg.replicaNum, newSyncCfg.replicaNum, pMsg->lastConfigIndex, oldStr, newStr);
+            taosMemoryFree(oldStr);
+            taosMemoryFree(newStr);
+
             if (pSyncNode->state == TAOS_SYNC_STATE_LEADER) {
               syncNodeBecomeLeader(pSyncNode, tmpbuf);
             } else {
@@ -671,21 +694,23 @@ int32_t syncNodeOnSnapshotSendCb(SSyncNode *pSyncNode, SyncSnapshotSend *pMsg) {
         if (gRaftDetailLog) {
           char *logSimpleStr = logStoreSimple2Str(pSyncNode->pLogStore);
           sDebug(
-              "vgId:%d sync event %s currentTerm:%lu snapshot recv from %s:%d finish, update log begin index:%ld, "
+              "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu snapshot recv from %s:%d finish, update log begin "
+              "index:%ld, "
               "snapshot.lastApplyIndex:%ld, "
               "snapshot.lastApplyTerm:%lu, snapshot.lastConfigIndex:%ld, privateTerm:%lu, raft log:%s",
-              pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->pRaftStore->currentTerm, host, port,
-              pMsg->lastIndex + 1, snapshot.lastApplyIndex, snapshot.lastApplyTerm, snapshot.lastConfigIndex,
-              pReceiver->privateTerm, logSimpleStr);
+              pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->commitIndex,
+              pSyncNode->pRaftStore->currentTerm, host, port, pMsg->lastIndex + 1, snapshot.lastApplyIndex,
+              snapshot.lastApplyTerm, snapshot.lastConfigIndex, pReceiver->privateTerm, logSimpleStr);
           taosMemoryFree(logSimpleStr);
         } else {
           sDebug(
-              "vgId:%d sync event %s currentTerm:%lu snapshot recv from %s:%d finish, update log begin index:%ld, "
+              "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu snapshot recv from %s:%d finish, update log begin "
+              "index:%ld, "
               "snapshot.lastApplyIndex:%ld, "
               "snapshot.lastApplyTerm:%lu, snapshot.lastConfigIndex:%ld, privateTerm:%lu",
-              pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->pRaftStore->currentTerm, host, port,
-              pMsg->lastIndex + 1, snapshot.lastApplyIndex, snapshot.lastApplyTerm, snapshot.lastConfigIndex,
-              pReceiver->privateTerm);
+              pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->commitIndex,
+              pSyncNode->pRaftStore->currentTerm, host, port, pMsg->lastIndex + 1, snapshot.lastApplyIndex,
+              snapshot.lastApplyTerm, snapshot.lastConfigIndex, pReceiver->privateTerm);
         }
 
         pReceiver->pWriter = NULL;
@@ -696,17 +721,19 @@ int32_t syncNodeOnSnapshotSendCb(SSyncNode *pSyncNode, SyncSnapshotSend *pMsg) {
         if (gRaftDetailLog) {
           char *msgStr = syncSnapshotSend2Str(pMsg);
           sDebug(
-              "vgId:%d sync event %s currentTerm:%lu snapshot recv from %s:%d end ack:%d, lastIndex:%ld, lastTerm:%lu, "
+              "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu snapshot recv from %s:%d end ack:%d, "
+              "lastIndex:%ld, lastTerm:%lu, "
               "lastConfigIndex:%ld, privateTerm:%lu, recv msg:%s",
-              pReceiver->pSyncNode->vgId, syncUtilState2String(pSyncNode->state),
+              pReceiver->pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->commitIndex,
               pReceiver->pSyncNode->pRaftStore->currentTerm, host, port, pReceiver->ack, pMsg->lastIndex,
               pMsg->lastTerm, pMsg->lastConfigIndex, pReceiver->privateTerm, msgStr);
           taosMemoryFree(msgStr);
         } else {
           sDebug(
-              "vgId:%d sync event %s currentTerm:%lu snapshot recv from %s:%d end ack:%d, lastIndex:%ld, lastTerm:%lu, "
+              "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu snapshot recv from %s:%d end ack:%d, "
+              "lastIndex:%ld, lastTerm:%lu, "
               "lastConfigIndex:%ld, privateTerm:%lu",
-              pReceiver->pSyncNode->vgId, syncUtilState2String(pSyncNode->state),
+              pReceiver->pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->commitIndex,
               pReceiver->pSyncNode->pRaftStore->currentTerm, host, port, pReceiver->ack, pMsg->lastIndex,
               pMsg->lastTerm, pMsg->lastConfigIndex, pReceiver->privateTerm);
         }
@@ -723,20 +750,22 @@ int32_t syncNodeOnSnapshotSendCb(SSyncNode *pSyncNode, SyncSnapshotSend *pMsg) {
         if (gRaftDetailLog) {
           char *msgStr = syncSnapshotSend2Str(pMsg);
           sDebug(
-              "vgId:%d sync event %s currentTerm:%lu snapshot recv from %s:%d force close ack:%d, lastIndex:%ld, "
+              "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu snapshot recv from %s:%d force close ack:%d, "
+              "lastIndex:%ld, "
               "lastTerm:%lu, "
               "lastConfigIndex:%ld, privateTerm:%lu, recv "
               "msg:%s",
-              pReceiver->pSyncNode->vgId, syncUtilState2String(pSyncNode->state),
+              pReceiver->pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->commitIndex,
               pReceiver->pSyncNode->pRaftStore->currentTerm, host, port, pReceiver->ack, pMsg->lastIndex,
               pMsg->lastTerm, pMsg->lastConfigIndex, pReceiver->privateTerm, msgStr);
           taosMemoryFree(msgStr);
         } else {
           sDebug(
-              "vgId:%d sync event %s currentTerm:%lu snapshot recv from %s:%d force close ack:%d, lastIndex:%ld, "
+              "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu snapshot recv from %s:%d force close ack:%d, "
+              "lastIndex:%ld, "
               "lastTerm:%lu, "
               "lastConfigIndex:%ld, privateTerm:%lu",
-              pReceiver->pSyncNode->vgId, syncUtilState2String(pSyncNode->state),
+              pReceiver->pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->commitIndex,
               pReceiver->pSyncNode->pRaftStore->currentTerm, host, port, pReceiver->ack, pMsg->lastIndex,
               pMsg->lastTerm, pMsg->lastConfigIndex, pReceiver->privateTerm);
         }
@@ -758,19 +787,23 @@ int32_t syncNodeOnSnapshotSendCb(SSyncNode *pSyncNode, SyncSnapshotSend *pMsg) {
         if (gRaftDetailLog) {
           char *msgStr = syncSnapshotSend2Str(pMsg);
           sDebug(
-              "vgId:%d sync event %s currentTerm:%lu snapshot recv from %s:%d receiving ack:%d, lastIndex:%ld, "
+              "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu snapshot recv from %s:%d receiving ack:%d, "
+              "lastIndex:%ld, "
               "lastTerm:%lu, "
               "lastConfigIndex:%ld, privateTerm:%lu, recv msg:%s",
-              pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->pRaftStore->currentTerm, host, port,
-              pReceiver->ack, pMsg->lastIndex, pMsg->lastTerm, pMsg->lastConfigIndex, pReceiver->privateTerm, msgStr);
+              pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->commitIndex,
+              pSyncNode->pRaftStore->currentTerm, host, port, pReceiver->ack, pMsg->lastIndex, pMsg->lastTerm,
+              pMsg->lastConfigIndex, pReceiver->privateTerm, msgStr);
           taosMemoryFree(msgStr);
         } else {
           sDebug(
-              "vgId:%d sync event %s currentTerm:%lu snapshot recv from %s:%d receiving ack:%d, lastIndex:%ld, "
+              "vgId:%d sync event %s commitIndex:%ld currentTerm:%lu snapshot recv from %s:%d receiving ack:%d, "
+              "lastIndex:%ld, "
               "lastTerm:%lu, "
               "lastConfigIndex:%ld, privateTerm:%lu",
-              pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->pRaftStore->currentTerm, host, port,
-              pReceiver->ack, pMsg->lastIndex, pMsg->lastTerm, pMsg->lastConfigIndex, pReceiver->privateTerm);
+              pSyncNode->vgId, syncUtilState2String(pSyncNode->state), pSyncNode->commitIndex,
+              pSyncNode->pRaftStore->currentTerm, host, port, pReceiver->ack, pMsg->lastIndex, pMsg->lastTerm,
+              pMsg->lastConfigIndex, pReceiver->privateTerm);
         }
 
       } else {
diff --git a/source/libs/sync/test/syncRaftCfgTest.cpp b/source/libs/sync/test/syncRaftCfgTest.cpp
index 8c6a704e2d..9460f0ad7a 100644
--- a/source/libs/sync/test/syncRaftCfgTest.cpp
+++ b/source/libs/sync/test/syncRaftCfgTest.cpp
@@ -27,6 +27,14 @@ SRaftCfg* createRaftCfg() {
   }
   pCfg->isStandBy = taosGetTimestampSec() % 100;
 
+  pCfg->configIndexCount = 5;
+  for (int i = 0; i < MAX_CONFIG_INDEX_COUNT; ++i) {
+    (pCfg->configIndexArr)[i] = -1;
+  }
+  for (int i = 0; i < pCfg->configIndexCount; ++i) {
+    (pCfg->configIndexArr)[i] = i * 100;
+  }
+
   return pCfg;
 }
 
@@ -100,6 +108,15 @@ void test5() {
   pCfg->isStandBy += 2;
   pCfg->snapshotEnable += 3;
   pCfg->lastConfigIndex += 1000;
+
+  pCfg->configIndexCount = 5;
+  for (int i = 0; i < MAX_CONFIG_INDEX_COUNT; ++i) {
+    (pCfg->configIndexArr)[i] = -1;
+  }
+  for (int i = 0; i < pCfg->configIndexCount; ++i) {
+    (pCfg->configIndexArr)[i] = i * 100;
+  }
+
   raftCfgPersist(pCfg);
 
   printf("%s update json file: %s myIndex->%d \n", (char*)__FUNCTION__, "./test3_raft_cfg.json", pCfg->cfg.myIndex);
@@ -118,6 +135,6 @@ int main() {
   test3();
   test4();
   test5();
-
+  
   return 0;
 }
diff --git a/source/libs/tfs/src/tfs.c b/source/libs/tfs/src/tfs.c
index 92beeffa0c..2d3d41de64 100644
--- a/source/libs/tfs/src/tfs.c
+++ b/source/libs/tfs/src/tfs.c
@@ -282,6 +282,8 @@ int32_t tfsMkdir(STfs *pTfs, const char *rname) {
 }
 
 int32_t tfsRmdir(STfs *pTfs, const char *rname) {
+  ASSERT(rname[0] != 0);
+    
   char aname[TMPNAME_LEN] = "\0";
 
   for (int32_t level = 0; level < pTfs->nlevel; level++) {
@@ -289,6 +291,7 @@ int32_t tfsRmdir(STfs *pTfs, const char *rname) {
     for (int32_t id = 0; id < pTier->ndisk; id++) {
       STfsDisk *pDisk = pTier->disks[id];
       snprintf(aname, TMPNAME_LEN, "%s%s%s", pDisk->path, TD_DIRSEP, rname);
+      uInfo("====> tfs remove dir : path:%s aname:%s rname:[%s]", pDisk->path, aname, rname);
       taosRemoveDir(aname);
     }
   }
diff --git a/source/libs/transport/src/transSvr.c b/source/libs/transport/src/transSvr.c
index b6e3fd2676..bd3781f9c7 100644
--- a/source/libs/transport/src/transSvr.c
+++ b/source/libs/transport/src/transSvr.c
@@ -310,7 +310,7 @@ static void uvHandleReq(SSvrConn* pConn) {
   }
 
   // set up conn info
-  SRpcConnInfo* pConnInfo = &(transMsg.info.connInfo);
+  SRpcConnInfo* pConnInfo = &(transMsg.info.conn);
   pConnInfo->clientIp = (uint32_t)(pConn->addr.sin_addr.s_addr);
   pConnInfo->clientPort = ntohs(pConn->addr.sin_port);
   tstrncpy(pConnInfo->user, pConn->user, sizeof(pConnInfo->user));
diff --git a/source/util/src/terror.c b/source/util/src/terror.c
index 596aab0e09..933e3ba92b 100644
--- a/source/util/src/terror.c
+++ b/source/util/src/terror.c
@@ -276,9 +276,14 @@ TAOS_DEFINE_ERROR(TSDB_CODE_MND_INVALID_TOPIC,            "Invalid topic")
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_INVALID_TOPIC_QUERY,      "Topic with invalid query")
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_INVALID_TOPIC_OPTION,     "Topic with invalid option")
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_CONSUMER_NOT_EXIST,       "Consumer not exist")
-TAOS_DEFINE_ERROR(TSDB_CODE_MND_CGROUP_USED,              "Consumer group being used by some consumer")
+TAOS_DEFINE_ERROR(TSDB_CODE_MND_TOPIC_OPTION_UNCHNAGED,   "Consumer unchanged")
+TAOS_DEFINE_ERROR(TSDB_CODE_MND_SUBSCRIBE_NOT_EXIST,      "Subcribe not exist")
+TAOS_DEFINE_ERROR(TSDB_CODE_MND_OFFSET_NOT_EXIST,         "Offset not exist")
+TAOS_DEFINE_ERROR(TSDB_CODE_MND_CONSUMER_NOT_READY,       "Consumer not ready")
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_TOPIC_SUBSCRIBED,         "Topic subscribed cannot be dropped")
+TAOS_DEFINE_ERROR(TSDB_CODE_MND_CGROUP_USED,              "Consumer group being used by some consumer")
 
+// mnode-stream
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_STREAM_ALREADY_EXIST,     "Stream already exists")
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_STREAM_NOT_EXIST,         "Stream not exist")
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_INVALID_STREAM_OPTION,    "Invalid stream option")
diff --git a/tests/script/tsim/mnode/basic5.sim b/tests/script/tsim/mnode/basic5.sim
index 399dced169..fc591aa25d 100644
--- a/tests/script/tsim/mnode/basic5.sim
+++ b/tests/script/tsim/mnode/basic5.sim
@@ -3,6 +3,10 @@ system sh/deploy.sh -n dnode1 -i 1
 system sh/deploy.sh -n dnode2 -i 2
 system sh/deploy.sh -n dnode3 -i 3
 system sh/deploy.sh -n dnode4 -i 4
+system sh/cfg.sh -n dnode1 -c transPullupInterval -v 1
+system sh/cfg.sh -n dnode2 -c transPullupInterval -v 1
+system sh/cfg.sh -n dnode3 -c transPullupInterval -v 1
+system sh/cfg.sh -n dnode4 -c transPullupInterval -v 1
 system sh/exec.sh -n dnode1 -s start
 sql connect
 
@@ -260,7 +264,7 @@ $x = 0
 step92: 
 	$x = $x + 1
 	sleep 1000
-	if $x == 10 then
+	if $x == 20 then
 		return -1
 	endi
 sql show mnodes
diff --git a/tests/system-test/test.py b/tests/system-test/test.py
index 5a68f548da..55bfd8c945 100644
--- a/tests/system-test/test.py
+++ b/tests/system-test/test.py
@@ -33,8 +33,16 @@ import taos
 
 def checkRunTimeError():
     import win32gui
+    timeCount = 0
     while 1:
         time.sleep(1)
+        timeCount = timeCount + 1
+        if (timeCount>900):
+            os.system("TASKKILL /F /IM taosd.exe")
+            os.system("TASKKILL /F /IM taos.exe")
+            os.system("TASKKILL /F /IM tmq_sim.exe")
+            os.system("TASKKILL /F /IM mintty.exe")
+            quit(0)
         hwnd = win32gui.FindWindow(None, "Microsoft Visual C++ Runtime Library")
         if hwnd:
             os.system("TASKKILL /F /IM taosd.exe")
diff --git a/tests/test/c/sdbDump.c b/tests/test/c/sdbDump.c
index e5986cf4dd..0f0f7e8d10 100644
--- a/tests/test/c/sdbDump.c
+++ b/tests/test/c/sdbDump.c
@@ -283,7 +283,8 @@ void dumpTrans(SSdb *pSdb, SJson *json) {
     tjsonAddIntegerToObject(item, "conflict", pObj->conflict);
     tjsonAddIntegerToObject(item, "exec", pObj->exec);
     tjsonAddStringToObject(item, "createdTime", i642str(pObj->createdTime));
-    tjsonAddStringToObject(item, "dbname", pObj->dbname);
+    tjsonAddStringToObject(item, "dbname1", pObj->dbname1);
+    tjsonAddStringToObject(item, "dbname2", pObj->dbname2);
     tjsonAddIntegerToObject(item, "commitLogNum", taosArrayGetSize(pObj->commitActions));
     tjsonAddIntegerToObject(item, "redoActionNum", taosArrayGetSize(pObj->redoActions));
     tjsonAddIntegerToObject(item, "undoActionNum", taosArrayGetSize(pObj->undoActions));