Bug Report
Please answer these questions before submitting your issue. Thanks!
1. Minimal reproduce step (Required)
update mysql.tidb set VARIABLE_VALUE="10min" where VARIABLE_NAME="tikv_gc_life_time";
update mysql.tidb set VARIABLE_VALUE="10min" where VARIABLE_NAME="tikv_gc_run_interval";
2. What did you expect to see? (Required)
The GC can work fine.
Another solution is returning an error if the util is wrong, so I suggest to update the config of GC using SET instead of update. The mysql.tidb should be a read-only table.
3. What did you see instead (Required)
The GC did not work.
4. What is your TiDB version? (Required)
MySQL [(none)]> select tidb_version()\G
*************************** 1. row ***************************
tidb_version(): Release Version: v4.0.7
Edition: Community
Git Commit Hash: ed939f3f11599b5a38352c5c160c917df3ebf3eb
Git Branch: heads/refs/tags/v4.0.7
UTC Build Time: 2020-09-29 06:56:48
GoVersion: go1.13
Race Enabled: false
TiKV Min Version: v3.0.0-60965b006877ca7234adaced7890d7b029ed1306
Check Table Before Drop: false
1 row in set (0.00 sec)
Bug Report
Please answer these questions before submitting your issue. Thanks!
1. Minimal reproduce step (Required)
2. What did you expect to see? (Required)
The GC can work fine.
Another solution is returning an error if the util is wrong, so I suggest to update the config of GC using
SETinstead ofupdate. Themysql.tidbshould be a read-only table.3. What did you see instead (Required)
The GC did not work.
4. What is your TiDB version? (Required)