Bug #92891 Please make relay_log_space_limit dynamic.
Submitted: 23 Oct 2018 5:13 Modified: 23 Oct 2018 9:51
Reporter: J-F Legacy Gagné Email Updates:
Status: Verified Impact on me:
None 
Category:MySQL Server: Replication Severity:S4 (Feature request)
Version:5.6, 5.7, 8.0 OS:Any
Assigned to: CPU Architecture:Any

[23 Oct 2018 5:13] J-F Legacy Gagné 
Description:
Hi,

one of the replication features that I often would like to use is limiting the disk space used by relay logs on slaves.  There is a system variable for that - relay_log_space_limit - but changing the value of this variable needs a MySQL restart (this variable is not dynamic).

It would be much more convenient if this variable could be updated without needing a MySQL restart.  Please make relay_log_space_limit dynamic.

Note: this feature request is not new.  It is mentioned in a comment (from March 13, 2012) on Bug#35611 (from 2008).  It is also mentioned in the description of Bug#68236 (from 2013).  However and to my knowledge, there is no feature request opened explicitly for requesting to make relay_log_space_limit dynamic.  This is why I am opening this now.

Related: https://jfg-mysql.blogspot.com/2018/10/arg-relay-log-space-limit-is-still-not-dynamic

Many thanks for working on this,

JFG

How to repeat:
This is not a bug, but a feature request, so no way to repeat.
[23 Oct 2018 9:51] MySQL Verification Team 
Hello Jean-François,

Thank you for the feature request!

regards,
Umesh