mysql 从库重启，配置失败，报错：Slave: Failed to initialize the master info structure for channel？

Question

系统：window 10
mysqld版本： 8.0.12

从库中设置链接主库

reset slave;

CHANGE MASTER TO
MASTER_HOST='192.168.1.100',
MASTER_USER='replication',
MASTER_PASSWORD='EnterSecurePasswordHere',
MASTER_PORT=3306,
MASTER_AUTO_POSITION = 1;

start slave;

show slave status;

以上设置成功，数据同步也没问题，mysql.slave_master_info，mysql.slave_relay_log_info表中配置数据正常。

但是，一旦重启 slave,就报以下错误，master配置信息失效

[ERROR] [MY-010728] [Repl] Error writing master configuration.
[ERROR] [MY-010729] [Repl] Error reading master configuration.
[ERROR] [MY-013129] [Server] A message intended for a client cannot be sent there as no client-session is attached. Therefore, we're sending the information to the error-log instead: MY-000029 - File '.\[e-mail]' not found (OS errno 2 - No such file or directory)
[ERROR] [MY-010605] [Repl] Failed in open_index_file() called from Relay_log_info::rli_init_info().
[ERROR] [MY-010426] [Repl] Slave: Failed to initialize the master info structure for channel '                                                                '; its record may still be present in 'mysql.slave_master_info' table, consider deleting it.
[ERROR] [MY-013123] [Repl] Slave I/O for channel '                                                                ': Slave failed to initialize master info structure from the repository, Error_code: MY-013123
[ERROR] [MY-013129] [Server] A message intended for a client cannot be sent there as no client-session is attached. Therefore, we're sending the information to the error-log instead: MY-001871 - Slave failed to initialize master info structure from the repository
[ERROR] [MY-011025] [Repl] Failed to start slave threads for channel '                                                                '.
[System] [MY-010931] [Server] C:\mysql\Extensions\MySQL8.0.12\\bin\mysqld.exe: ready for connections. Version: '8.0.12'  socket: ''  port: 3306  MySQL Community Server - GPL.

更让我不理解的是，重启后马上执行 show slave status;显示下面信息：

+----------------+---------------------------------------------------------------------------+-------------+-------------+---------------+
| Slave_IO_State | Master_Host                                                               | Master_User | Master_Port | Connect_Retry |
+----------------+---------------------------------------------------------------------------+-------------+-------------+---------------+
|                | 192.168.1.100                                                  replication |             |        3306 |            60 |
+----------------+---------------------------------------------------------------------------+-------------+-------------+---------------+

Master_Host 字段中，混杂了 master的IP和用户名，中间有大量空格，而Master_User字段为空，令我不解

---

在我google的时候，看到有人说是 master.info问题，但我并没有配置 master-info-file,且mysql 8.0开始，已经默认是master_info_repository=TABLE 和 relay_log_info_repository=TABLE，参考：17.2.4.2 Replication Metadata Repositories

Answer 1

https://blog.csdn.net/weixin_39004901/article/details/84847640