Description:
Hello,
We are now using MySQL8.0.25, and we find that there is a case slave db will report error:
```
2022-02-21T21:11:47.760438+08:00 6 [ERROR] [MY-013118] [Repl] Slave I/O for channel '': Unexpected master's heartbeat data: heartbeat is not compatible with local info; the event's data: log_file_name mysql-bin.000006*<8c>¨ì log_pos 3753884391, Error_code: MY-013118
2022-02-21T21:11:47.760530+08:00 6 [ERROR] [MY-013122] [Repl] Slave I/O for channel '': Relay log write failure: could not queue event from master, Error_code: MY-013122.
```
And then slave io_thread stops working.
My servers are configured like this:
```
binlog_format = ROW
binlog_row_image = FULL
```
How to repeat:
(1) First we prepare 2 MySQL8.0.25 servers(MySQL-1 and MySQL-2), and execute the following SQL statements on each server.
(2) init MySQL-1 and create a database rpl_db1
mysql> select "This is master", @@bind_address, @@port;
+----------------+----------------+--------+
| This is master | @@bind_address | @@port |
+----------------+----------------+--------+
| This is master | 10.229.31.45 | 6301 |
+----------------+----------------+--------+
1 row in set (0.00 sec)
mysql> reset master;
Query OK, 0 rows affected (0.01 sec)
mysql> create database rpl_db1;
Query OK, 1 row affected (0.00 sec)
(2) init MySQL-2 and create a database rpl_db2
mysql> select "This is slave", @@bind_address, @@port;
+---------------+----------------+--------+
| This is slave | @@bind_address | @@port |
+---------------+----------------+--------+
| This is slave | 192.168.10.42 | 6310 |
+---------------+----------------+--------+
1 row in set (0.00 sec)
mysql> reset master;
Query OK, 0 rows affected (0.00 sec)
mysql> create database rpl_db2;
Query OK, 1 row affected (0.00 sec)
(3) Make MySQL-2 to replicate from MySQL-1.
# Execute on MySQL-2：
mysql> change master to master_host = '10.229.31.45', master_port = 6301, master_user = 'root', master_password = 'db10$ZTE', master_auto_position = 1, MASTER_HEARTBEAT_PERIOD = 1;
Query OK, 0 rows affected, 9 warnings (0.01 sec)
mysql> start slave;
Query OK, 0 rows affected, 1 warning (0.06 sec)
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 10.229.31.45
Master_User: root
Master_Port: 6301
Connect_Retry: 60
Master_Log_File: mysql-bin.000001
Read_Master_Log_Pos: 350
Relay_Log_File: relay-bin.000002
Relay_Log_Pos: 565
Relay_Master_Log_File: mysql-bin.000001
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 350
Relay_Log_Space: 768
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 757071272
Master_UUID: 938d8052-8f34-11ec-a244-287b09c2c4dc
Master_Info_File: mysql.slave_master_info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set: 938d8052-8f34-11ec-a244-287b09c2c4dc:1
Executed_Gtid_Set: 2159c3bc-9329-11ec-87ab-287b09c2c4dc:1,
938d8052-8f34-11ec-a244-287b09c2c4dc:1
Auto_Position: 1
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
Master_public_key_path:
Get_master_public_key: 0
Network_Namespace:
1 row in set, 1 warning (0.01 sec)
mysql>
(4) Construct a big table rpl_db1.sbtest1 (10,000,000 records) on MySQL1 (master db) with sysbench:
[yxx_sysbench_1@localhost sysbench]$ ./sysbench --test=./db/oltp.lua --oltp-auto-inc=off --oltp-table-size=10000000 --oltp-tables-count=1 --mysql-table-engine=innodb --mysql-user=root --mysql-password='db10$ZTE' --mysql-port=6301 --mysql-host=10.229.31.45 --mysql-db=rpl_db1 --max-requests=0 --max-time=600 --num-threads=800 --report-interval=1 prepare
sysbench 0.5: multi-threaded system evaluation benchmark
Creating table 'sbtest1'...
Inserting 10000000 records into 'sbtest1'
(5) Make a big transaction (about 10 GB) on MySQL-1 (master db):
# Execute on MySQL-1
mysql> use rpl_db1
Database changed
mysql> show tables;
+-------------------+
| Tables_in_rpl_db1 |
+-------------------+
| sbtest1 |
+-------------------+
1 row in set (0.00 sec)
mysql> create table sbtest2 like sbtest1;
Query OK, 0 rows affected (0.01 sec)
mysql> begin;
Query OK, 0 rows affected (0.00 sec)
mysql> insert into sbtest2 select * from sbtest1;
Query OK, 10000000 rows affected (2 min 3.06 sec)
Records: 10000000 Duplicates: 0 Warnings: 0
mysql> update sbtest2 set k = k+1 ;
Query OK, 10000000 rows affected (2 min 52.62 sec)
Rows matched: 10000000 Changed: 10000000 Warnings: 0
mysql> update sbtest2 set k = k+1 ;
Query OK, 10000000 rows affected (3 min 5.98 sec)
Rows matched: 10000000 Changed: 10000000 Warnings: 0
mysql> commit;
Query OK, 0 rows affected (21.09 sec)
mysql>
(6) Wait until MySQL-2 has replicated all transactions from MySQL-1:
# Execute on MySQL-1:
mysql> show master status\G
*************************** 1. row ***************************
File: mysql-bin.000003
Position: 196
Binlog_Do_DB:
Binlog_Ignore_DB:
Executed_Gtid_Set: 938d8052-8f34-11ec-a244-287b09c2c4dc:1-4355
1 row in set (0.00 sec)
# Execute on MySQL-2:
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 10.229.31.45
Master_User: root
Master_Port: 6301
Connect_Retry: 60
Master_Log_File: mysql-bin.000003
Read_Master_Log_Pos: 196
Relay_Log_File: relay-bin.000008
Relay_Log_Pos: 411
Relay_Master_Log_File: mysql-bin.000003
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 196
Relay_Log_Space: 701
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 757071272
Master_UUID: 938d8052-8f34-11ec-a244-287b09c2c4dc
Master_Info_File: mysql.slave_master_info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set: 938d8052-8f34-11ec-a244-287b09c2c4dc:1-4355
Executed_Gtid_Set: 2159c3bc-9329-11ec-87ab-287b09c2c4dc:1,
938d8052-8f34-11ec-a244-287b09c2c4dc:1-4355
Auto_Position: 1
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
Master_public_key_path:
Get_master_public_key: 0
Network_Namespace:
1 row in set, 1 warning (0.00 sec)
mysql> show master status\G
*************************** 1. row ***************************
File: mysql-bin.000003
Position: 236
Binlog_Do_DB:
Binlog_Ignore_DB:
Executed_Gtid_Set: 2159c3bc-9329-11ec-87ab-287b09c2c4dc:1,
938d8052-8f34-11ec-a244-287b09c2c4dc:1-4355
1 row in set (0.00 sec)
(7) Now we stop the replication from MySQL1 to MySQL2, and construct the replication from MySQL2 to MySQL1, which means MySQL2 becomes master now:
# Execute on MySQL-2:
mysql> stop slave;
Query OK, 0 rows affected, 1 warning (0.02 sec)
mysql> reset slave all;
Query OK, 0 rows affected, 1 warning (0.00 sec)
# Execute on MySQL-1:
mysql> change master to master_host = '192.168.10.42', master_port = 6310, master_user = 'root', master_password = 'db10$ZTE', master_auto_position = 1, MASTER_HEARTBEAT_PERIOD = 1;
Query OK, 0 rows affected, 9 warnings (0.00 sec)
mysql> start slave;
Query OK, 0 rows affected, 1 warning (0.12 sec)
(8) later, let's check the slave status of MySQL-1:
# Execute on MySQL-1:
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State:
Master_Host: 192.168.10.42
Master_User: root
Master_Port: 6310
Connect_Retry: 60
Master_Log_File: mysql-bin.000002
Read_Master_Log_Pos: 3540658345
Relay_Log_File: relay-bin.000004
Relay_Log_Pos: 458
Relay_Master_Log_File: mysql-bin.000002
Slave_IO_Running: No
Slave_SQL_Running: Yes
Replicate_Do_DB:
....
Last_IO_Errno: 13122
Last_IO_Error: Relay log write failure: could not queue event from master
Last_SQL_Errno: 0
Last_SQL_Error:
...
Retrieved_Gtid_Set: 2159c3bc-9329-11ec-87ab-287b09c2c4dc:1
Executed_Gtid_Set: 2159c3bc-9329-11ec-87ab-287b09c2c4dc:1,
938d8052-8f34-11ec-a244-287b09c2c4dc:1-4355
the following error message is found in error log:
```
2022-02-22T16:07:19.350633-05:00 17 [System] [MY-010562] [Repl] Slave I/O thread for channel '': connected to master 'root@192.168.10.42:6310',replication started in log 'FIRST' at position 4
2022-02-22T16:07:19.473646-05:00 18 [Note] [MY-010581] [Repl] Slave SQL thread for channel '' initialized, starting replication in log 'FIRST' at position 0, relay log '../relaylog/relay-bin.000001' position: 4
2022-02-22T16:07:21.787311-05:00 17 [ERROR] [MY-013118] [Repl] Slave I/O for channel '': Unexpected master's heartbeat data: heartbeat is not compatible with local info; the event's data: log_file_name mysql-bin.000002▒▒▒F log_pos 2879756567, Error_code: MY-013118
2022-02-22T16:07:21.787346-05:00 17 [ERROR] [MY-013122] [Repl] Slave I/O for channel '': Relay log write failure: could not queue event from master, Error_code: MY-013122
2022-02-22T16:07:21.787370-05:00 17 [Note] [MY-010570] [Repl] Slave I/O thread exiting for channel '', read up to log 'mysql-bin.000002', position 3540658345
```
Description: Hello, We are now using MySQL8.0.25, and we find that there is a case slave db will report error: ``` 2022-02-21T21:11:47.760438+08:00 6 [ERROR] [MY-013118] [Repl] Slave I/O for channel '': Unexpected master's heartbeat data: heartbeat is not compatible with local info; the event's data: log_file_name mysql-bin.000006*<8c>¨ì log_pos 3753884391, Error_code: MY-013118 2022-02-21T21:11:47.760530+08:00 6 [ERROR] [MY-013122] [Repl] Slave I/O for channel '': Relay log write failure: could not queue event from master, Error_code: MY-013122. ``` And then slave io_thread stops working. My servers are configured like this: ``` binlog_format = ROW binlog_row_image = FULL ``` How to repeat: (1) First we prepare 2 MySQL8.0.25 servers(MySQL-1 and MySQL-2), and execute the following SQL statements on each server. (2) init MySQL-1 and create a database rpl_db1 mysql> select "This is master", @@bind_address, @@port; +----------------+----------------+--------+ | This is master | @@bind_address | @@port | +----------------+----------------+--------+ | This is master | 10.229.31.45 | 6301 | +----------------+----------------+--------+ 1 row in set (0.00 sec) mysql> reset master; Query OK, 0 rows affected (0.01 sec) mysql> create database rpl_db1; Query OK, 1 row affected (0.00 sec) (2) init MySQL-2 and create a database rpl_db2 mysql> select "This is slave", @@bind_address, @@port; +---------------+----------------+--------+ | This is slave | @@bind_address | @@port | +---------------+----------------+--------+ | This is slave | 192.168.10.42 | 6310 | +---------------+----------------+--------+ 1 row in set (0.00 sec) mysql> reset master; Query OK, 0 rows affected (0.00 sec) mysql> create database rpl_db2; Query OK, 1 row affected (0.00 sec) (3) Make MySQL-2 to replicate from MySQL-1. # Execute on MySQL-2： mysql> change master to master_host = '10.229.31.45', master_port = 6301, master_user = 'root', master_password = 'db10$ZTE', master_auto_position = 1, MASTER_HEARTBEAT_PERIOD = 1; Query OK, 0 rows affected, 9 warnings (0.01 sec) mysql> start slave; Query OK, 0 rows affected, 1 warning (0.06 sec) mysql> show slave status\G *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 10.229.31.45 Master_User: root Master_Port: 6301 Connect_Retry: 60 Master_Log_File: mysql-bin.000001 Read_Master_Log_Pos: 350 Relay_Log_File: relay-bin.000002 Relay_Log_Pos: 565 Relay_Master_Log_File: mysql-bin.000001 Slave_IO_Running: Yes Slave_SQL_Running: Yes Replicate_Do_DB: Replicate_Ignore_DB: Replicate_Do_Table: Replicate_Ignore_Table: Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: Last_Errno: 0 Last_Error: Skip_Counter: 0 Exec_Master_Log_Pos: 350 Relay_Log_Space: 768 Until_Condition: None Until_Log_File: Until_Log_Pos: 0 Master_SSL_Allowed: No Master_SSL_CA_File: Master_SSL_CA_Path: Master_SSL_Cert: Master_SSL_Cipher: Master_SSL_Key: Seconds_Behind_Master: 0 Master_SSL_Verify_Server_Cert: No Last_IO_Errno: 0 Last_IO_Error: Last_SQL_Errno: 0 Last_SQL_Error: Replicate_Ignore_Server_Ids: Master_Server_Id: 757071272 Master_UUID: 938d8052-8f34-11ec-a244-287b09c2c4dc Master_Info_File: mysql.slave_master_info SQL_Delay: 0 SQL_Remaining_Delay: NULL Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates Master_Retry_Count: 86400 Master_Bind: Last_IO_Error_Timestamp: Last_SQL_Error_Timestamp: Master_SSL_Crl: Master_SSL_Crlpath: Retrieved_Gtid_Set: 938d8052-8f34-11ec-a244-287b09c2c4dc:1 Executed_Gtid_Set: 2159c3bc-9329-11ec-87ab-287b09c2c4dc:1, 938d8052-8f34-11ec-a244-287b09c2c4dc:1 Auto_Position: 1 Replicate_Rewrite_DB: Channel_Name: Master_TLS_Version: Master_public_key_path: Get_master_public_key: 0 Network_Namespace: 1 row in set, 1 warning (0.01 sec) mysql> (4) Construct a big table rpl_db1.sbtest1 (10,000,000 records) on MySQL1 (master db) with sysbench: [yxx_sysbench_1@localhost sysbench]$ ./sysbench --test=./db/oltp.lua --oltp-auto-inc=off --oltp-table-size=10000000 --oltp-tables-count=1 --mysql-table-engine=innodb --mysql-user=root --mysql-password='db10$ZTE' --mysql-port=6301 --mysql-host=10.229.31.45 --mysql-db=rpl_db1 --max-requests=0 --max-time=600 --num-threads=800 --report-interval=1 prepare sysbench 0.5: multi-threaded system evaluation benchmark Creating table 'sbtest1'... Inserting 10000000 records into 'sbtest1' (5) Make a big transaction (about 10 GB) on MySQL-1 (master db): # Execute on MySQL-1 mysql> use rpl_db1 Database changed mysql> show tables; +-------------------+ | Tables_in_rpl_db1 | +-------------------+ | sbtest1 | +-------------------+ 1 row in set (0.00 sec) mysql> create table sbtest2 like sbtest1; Query OK, 0 rows affected (0.01 sec) mysql> begin; Query OK, 0 rows affected (0.00 sec) mysql> insert into sbtest2 select * from sbtest1; Query OK, 10000000 rows affected (2 min 3.06 sec) Records: 10000000 Duplicates: 0 Warnings: 0 mysql> update sbtest2 set k = k+1 ; Query OK, 10000000 rows affected (2 min 52.62 sec) Rows matched: 10000000 Changed: 10000000 Warnings: 0 mysql> update sbtest2 set k = k+1 ; Query OK, 10000000 rows affected (3 min 5.98 sec) Rows matched: 10000000 Changed: 10000000 Warnings: 0 mysql> commit; Query OK, 0 rows affected (21.09 sec) mysql> (6) Wait until MySQL-2 has replicated all transactions from MySQL-1: # Execute on MySQL-1: mysql> show master status\G *************************** 1. row *************************** File: mysql-bin.000003 Position: 196 Binlog_Do_DB: Binlog_Ignore_DB: Executed_Gtid_Set: 938d8052-8f34-11ec-a244-287b09c2c4dc:1-4355 1 row in set (0.00 sec) # Execute on MySQL-2: mysql> show slave status\G *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 10.229.31.45 Master_User: root Master_Port: 6301 Connect_Retry: 60 Master_Log_File: mysql-bin.000003 Read_Master_Log_Pos: 196 Relay_Log_File: relay-bin.000008 Relay_Log_Pos: 411 Relay_Master_Log_File: mysql-bin.000003 Slave_IO_Running: Yes Slave_SQL_Running: Yes Replicate_Do_DB: Replicate_Ignore_DB: Replicate_Do_Table: Replicate_Ignore_Table: Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: Last_Errno: 0 Last_Error: Skip_Counter: 0 Exec_Master_Log_Pos: 196 Relay_Log_Space: 701 Until_Condition: None Until_Log_File: Until_Log_Pos: 0 Master_SSL_Allowed: No Master_SSL_CA_File: Master_SSL_CA_Path: Master_SSL_Cert: Master_SSL_Cipher: Master_SSL_Key: Seconds_Behind_Master: 0 Master_SSL_Verify_Server_Cert: No Last_IO_Errno: 0 Last_IO_Error: Last_SQL_Errno: 0 Last_SQL_Error: Replicate_Ignore_Server_Ids: Master_Server_Id: 757071272 Master_UUID: 938d8052-8f34-11ec-a244-287b09c2c4dc Master_Info_File: mysql.slave_master_info SQL_Delay: 0 SQL_Remaining_Delay: NULL Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates Master_Retry_Count: 86400 Master_Bind: Last_IO_Error_Timestamp: Last_SQL_Error_Timestamp: Master_SSL_Crl: Master_SSL_Crlpath: Retrieved_Gtid_Set: 938d8052-8f34-11ec-a244-287b09c2c4dc:1-4355 Executed_Gtid_Set: 2159c3bc-9329-11ec-87ab-287b09c2c4dc:1, 938d8052-8f34-11ec-a244-287b09c2c4dc:1-4355 Auto_Position: 1 Replicate_Rewrite_DB: Channel_Name: Master_TLS_Version: Master_public_key_path: Get_master_public_key: 0 Network_Namespace: 1 row in set, 1 warning (0.00 sec) mysql> show master status\G *************************** 1. row *************************** File: mysql-bin.000003 Position: 236 Binlog_Do_DB: Binlog_Ignore_DB: Executed_Gtid_Set: 2159c3bc-9329-11ec-87ab-287b09c2c4dc:1, 938d8052-8f34-11ec-a244-287b09c2c4dc:1-4355 1 row in set (0.00 sec) (7) Now we stop the replication from MySQL1 to MySQL2, and construct the replication from MySQL2 to MySQL1, which means MySQL2 becomes master now: # Execute on MySQL-2: mysql> stop slave; Query OK, 0 rows affected, 1 warning (0.02 sec) mysql> reset slave all; Query OK, 0 rows affected, 1 warning (0.00 sec) # Execute on MySQL-1: mysql> change master to master_host = '192.168.10.42', master_port = 6310, master_user = 'root', master_password = 'db10$ZTE', master_auto_position = 1, MASTER_HEARTBEAT_PERIOD = 1; Query OK, 0 rows affected, 9 warnings (0.00 sec) mysql> start slave; Query OK, 0 rows affected, 1 warning (0.12 sec) (8) later, let's check the slave status of MySQL-1: # Execute on MySQL-1: mysql> show slave status\G *************************** 1. row *************************** Slave_IO_State: Master_Host: 192.168.10.42 Master_User: root Master_Port: 6310 Connect_Retry: 60 Master_Log_File: mysql-bin.000002 Read_Master_Log_Pos: 3540658345 Relay_Log_File: relay-bin.000004 Relay_Log_Pos: 458 Relay_Master_Log_File: mysql-bin.000002 Slave_IO_Running: No Slave_SQL_Running: Yes Replicate_Do_DB: .... Last_IO_Errno: 13122 Last_IO_Error: Relay log write failure: could not queue event from master Last_SQL_Errno: 0 Last_SQL_Error: ... Retrieved_Gtid_Set: 2159c3bc-9329-11ec-87ab-287b09c2c4dc:1 Executed_Gtid_Set: 2159c3bc-9329-11ec-87ab-287b09c2c4dc:1, 938d8052-8f34-11ec-a244-287b09c2c4dc:1-4355 the following error message is found in error log: ``` 2022-02-22T16:07:19.350633-05:00 17 [System] [MY-010562] [Repl] Slave I/O thread for channel '': connected to master 'root@192.168.10.42:6310',replication started in log 'FIRST' at position 4 2022-02-22T16:07:19.473646-05:00 18 [Note] [MY-010581] [Repl] Slave SQL thread for channel '' initialized, starting replication in log 'FIRST' at position 0, relay log '../relaylog/relay-bin.000001' position: 4 2022-02-22T16:07:21.787311-05:00 17 [ERROR] [MY-013118] [Repl] Slave I/O for channel '': Unexpected master's heartbeat data: heartbeat is not compatible with local info; the event's data: log_file_name mysql-bin.000002▒▒▒F log_pos 2879756567, Error_code: MY-013118 2022-02-22T16:07:21.787346-05:00 17 [ERROR] [MY-013122] [Repl] Slave I/O for channel '': Relay log write failure: could not queue event from master, Error_code: MY-013122 2022-02-22T16:07:21.787370-05:00 17 [Note] [MY-010570] [Repl] Slave I/O thread exiting for channel '', read up to log 'mysql-bin.000002', position 3540658345 ```