mysql5.7问题：[Note] InnoDB: Waiting for page_cleaner to finish flushing of buffer pool

在关闭mysql5.7的时候发现问题，一直处于夯住状态

[root@localhost ~]# /etc/init.d/mysqld stop
Shutting down MySQL...............................................................................................................................................................................................................................................................................................................................................................

查看日志

[root@localhost logs]# tail -f mysql-error.log 
2019-08-27T09:55:12.789085Z 0 [Note] Shutting down plugin 'INNODB_CMP'
2019-08-27T09:55:12.789098Z 0 [Note] Shutting down plugin 'INNODB_LOCK_WAITS'
2019-08-27T09:55:12.789110Z 0 [Note] Shutting down plugin 'INNODB_LOCKS'
2019-08-27T09:55:12.789120Z 0 [Note] Shutting down plugin 'INNODB_TRX'
2019-08-27T09:55:12.789129Z 0 [Note] Shutting down plugin 'InnoDB'
2019-08-27T09:55:12.789764Z 0 [Note] InnoDB: FTS optimize thread exiting.
2019-08-27T09:55:12.790347Z 0 [Note] InnoDB: Starting shutdown...
2019-08-27T09:55:12.892529Z 0 [Note] InnoDB: Dumping buffer pool(s) to /opt/data/mysql/ib_buffer_pool
2019-08-27T09:55:12.893560Z 0 [Note] InnoDB: Buffer pool(s) dump completed at 190827 17:55:12
2019-08-27T09:56:14.348034Z 0 [Note] InnoDB: Waiting for page_cleaner to finish flushing of buffer pool
2019-08-27T09:57:14.938167Z 0 [Note] InnoDB: Waiting for page_cleaner to finish flushing of buffer pool
2019-08-27T09:58:15.580395Z 0 [Note] InnoDB: Waiting for page_cleaner to finish flushing of buffer pool
2019-08-27T09:59:16.164504Z 0 [Note] InnoDB: Waiting for page_cleaner to finish flushing of buffer pool
2019-08-27T10:00:16.749212Z 0 [Note] InnoDB: Waiting for page_cleaner to finish flushing of buffer pool
2019-08-27T10:01:17.380468Z 0 [Note] InnoDB: Waiting for page_cleaner to finish flushing of buffer pool
2019-08-27T10:02:18.073085Z 0 [Note] InnoDB: Waiting for page_cleaner to finish flushing of buffer pool

 查找问题，想了想，我修改了服务器的时间，造成系统时间与mysql缓存的时间不一致，我是把时间改提前了，处理方法

date -s 2019-08-28 #把时间改在mysql正常运行的时间之后
date -s  18:05:20
查看
ps -ef|grep mysql   #mysql自己停止了

最后改回正常时间就可以了