enh: adjust error code if transaction exec failed

include/util/taoserror.h

@@ -325,6 +325,7 @@ int32_t* taosGetErrno();
 #define TSDB_CODE_MND_TRANS_CLOG_IS_NULL        TAOS_DEF_ERROR_CODE(0, 0x03D4)
 #define TSDB_CODE_MND_TRANS_NETWORK_UNAVAILL    TAOS_DEF_ERROR_CODE(0, 0x03D5)
 #define TSDB_CODE_MND_LAST_TRANS_NOT_FINISHED   TAOS_DEF_ERROR_CODE(0, 0x03D6) //internal
+#define TSDB_CODE_MND_TRNAS_EXEC_IN_BACKGROUND  TAOS_DEF_ERROR_CODE(0, 0x03D7)
 #define TSDB_CODE_MND_TRANS_UNKNOW_ERROR        TAOS_DEF_ERROR_CODE(0, 0x03DF)
 
 // mnode-mq

source/dnode/mnode/impl/src/mndTrans.c

@@ -960,6 +960,10 @@ static void mndTransSendRpcRsp(SMnode *pMnode, STrans *pTrans) {
       if (code == TSDB_CODE_RPC_NETWORK_UNAVAIL) {
         code = TSDB_CODE_MND_TRANS_NETWORK_UNAVAILL;
       }
+      if (code == TSDB_CODE_SYN_TIMEOUT) {
+        code = TSDB_CODE_MND_TRNAS_EXEC_IN_BACKGROUND;
+      }
+
       if (i != 0 && code == 0) {
         code = TSDB_CODE_MNODE_NOT_FOUND;
       }

source/util/src/terror.c

@@ -256,10 +256,11 @@ TAOS_DEFINE_ERROR(TSDB_CODE_MND_TRANS_ALREADY_EXIST,      "Transaction already e
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_TRANS_NOT_EXIST,          "Transaction not exists")
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_TRANS_INVALID_STAGE,      "Invalid stage to kill")
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_TRANS_CONFLICT,           "Conflict transaction not completed")
-TAOS_DEFINE_ERROR(TSDB_CODE_MND_TRANS_UNKNOW_ERROR,       "Unknown transaction error")
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_TRANS_CLOG_IS_NULL,       "Transaction commitlog is null")
+TAOS_DEFINE_ERROR(TSDB_CODE_MND_TRANS_NETWORK_UNAVAILL,   "Unable to establish connection While execute transaction and will continue in the background")
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_LAST_TRANS_NOT_FINISHED,  "Last Transaction not finished")
-TAOS_DEFINE_ERROR(TSDB_CODE_MND_TRANS_NETWORK_UNAVAILL,   "Unable to establish connection While execute transaction")
+TAOS_DEFINE_ERROR(TSDB_CODE_MND_TRNAS_EXEC_IN_BACKGROUND, "Sync timeout While execute transaction and will continue in the background")
+TAOS_DEFINE_ERROR(TSDB_CODE_MND_TRANS_UNKNOW_ERROR,       "Unknown transaction error")
 
 // mnode-mq
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_TOPIC_ALREADY_EXIST,      "Topic already exists")