| Bug #81394 | Unable to change performance_schema whilst super_read_only is enabled | ||
|---|---|---|---|
| Submitted: | 12 May 2016 13:40 | Modified: | 18 Sep 15:54 |
| Reporter: | Ceri Williams | Email Updates: | |
| Status: | Verified | Impact on me: | |
| Category: | MySQL Server: Performance Schema | Severity: | S3 (Non-critical) |
| Version: | 5.7.12,5.7.15 | OS: | Any |
| Assigned to: | CPU Architecture: | Any | |
| Tags: | performance_schema, super_read_only, sys | ||
[12 May 2016 14:44]
MySQL Verification Team
This is a feature request. I find it fully valid one. Verified as a feature request.
[12 May 2016 17:02]
MySQL Verification Team
Criticism accepted. Severity is changed.
[12 May 2016 17:22]
Mark Leith
See also related Bug#81009 which is limiting TRUNCATE within the sys.ps_truncate_all_tables procedure.
[27 Sep 2016 21:23]
Ceri Williams
This looks to have been fixed in 8.0.0, but still a problem in latest 5.7 release (5.7.15)
Description: Trying to make changes to the performance_schema is not possible whilst super_read_only is enabled. Since this is set for a reason it is undesirable to change it to be able to change instrumentation, etc. How to repeat: mysql [localhost] {msandbox} ((sys)) > set global super_read_only = 1; Query OK, 0 rows affected (0.00 sec) mysql [localhost] {msandbox} ((sys)) > UPDATE performance_schema.setup_instruments SET enabled = 'YES', timed = 'YES' where name like 'wait'; ERROR 1290 (HY000): The MySQL server is running with the --super-read-only option so it cannot execute this statement mysql [localhost] {msandbox} ((sys)) > select @@version; +-----------+ | @@version | +-----------+ | 5.7.12 | +-----------+ Suggested fix: Bypass super_read_only for performance_schema and sys as done for being able to issue STOP SLAVE with relay_log_info_repository set to TABLE.