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https://issues.apache.org/jira/browse/RATIS-981?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17150813#comment-17150813
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Glen Geng commented on RATIS-981:
---------------------------------
Please assign this Jira to me.
Thanks !
> Step-down stale leader in case of split-brain
> ---------------------------------------------
>
> Key: RATIS-981
> URL: https://issues.apache.org/jira/browse/RATIS-981
> Project: Ratis
> Issue Type: Improvement
> Reporter: Nanda kumar
> Assignee: Nanda kumar
> Priority: Major
>
> We should make sure that the stale leader steps down to the candidate state
> before the next leader election.
> Proposal:
> In the heartbeat thread in the Leader node, we should check if the last
> response time of the follower is less than the leader election timeout. If
> the majority of the follower’s last response time is less than the leader
> election timeout, the current leader is still the active leader. Majority of
> the followers are heartbeating to the current leader, so there can’t be a new
> leader.
> If the majority of follower’s last response time is greater than the leader
> election timeout, the current leader should step down and become a candidate.
> With this check, we can be sure that the current leader will step down and
> become a candidate before the new leader election starts in case of a network
> partition.
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