Bug #91151 Add a Learner/Observer role to leverage it in WAN setup
Submitted: 5 Jun 2018 17:12 Modified: 6 Jun 2018 4:31
Reporter: Artem Danilov Email Updates:
Status: Verified Impact on me:
Category:MySQL Server: Group Replication Severity:S3 (Non-critical)
Version:8.0.11 OS:Any
Assigned to: CPU Architecture:Any

[5 Jun 2018 17:12] Artem Danilov
MySQL server instance from distant region should be able to be part of the group to minimize the time to move primary to that region. Such members should not vote to avoid performance penalty observed in WAN setup currently.

Right now we have to use asynchronous replication over WAN and move it to the group only when we want to fail over master to that region. Adding a new member to the group is a time consuming operation. Learner/Observer role in the Group Replication instead of old school asynchronous replication should help with that.

How to repeat:
New feature request.
[6 Jun 2018 4:31] MySQL Verification Team
Hello Artem,

Thank you for the feature request!

[6 May 2019 3:33] WANG GUANGYOU
We want it too !