错误如下：
[Batch Job] Batch Job 121_test_bak start
————— 2020-01-15 16:31:39 —————
[BAK] Backup schema information_schema start
[BAK] Getting tables
[BAK] Getting views
[BAK] Getting functions
[BAK] Getting events
[BAK] Getting data info
[ERR] 3167 – The ‘INFORMATION_SCHEMA.GLOBAL_STATUS’ feature is disabled; see the documentation for ‘show_compatibility_56’
[ERR] Failed on server service run begin options!
[BAK] Finished – Unsuccessfully
原因：
从mysql5.7.6开始information_schema.global_status已经开始被舍弃，为了兼容性，此时需要打开 show_compatibility_56
解决办法：
mysql> show variables like '%show_compatibility_56%'; # 查看show_compatibility_56%的开关
+-----------------------+-------+
| Variable_name | Value |
+-----------------------+-------+
| show_compatibility_56 | OFF |
+-----------------------+-------+
1 row in set (0.01 sec)
mysql> set global show_compatibility_56=on; # 打开show_compatibility_56的开关
Query OK, 0 rows affected (0.00 sec)
mysql> show variables like '%show_compatibility_56%';
+-----------------------+-------+
| Variable_name | Value |
+-----------------------+-------+
| show_compatibility_56 | ON |
+-----------------------+-------+
1 row in set (0.01 sec)
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