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https://issues.apache.org/jira/browse/KUDU-2947?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alexey Serbin updated KUDU-2947:
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Labels: stability (was: )
> A replica with slow WAL may grant votes even if established leader is alive
> and well
> ------------------------------------------------------------------------------------
>
> Key: KUDU-2947
> URL: https://issues.apache.org/jira/browse/KUDU-2947
> Project: Kudu
> Issue Type: Bug
> Components: consensus, master, tserver
> Affects Versions: 0.5.0, 0.6.0, 0.7.0, 0.7.1, 0.8.0, 0.9.0, 0.9.1, 0.10.0,
> 1.0.0, 1.0.1, 1.1.0, 1.2.0, 1.3.0, 1.3.1, 1.4.0, 1.5.0, 1.6.0, 1.7.0, 1.8.0,
> 1.7.1, 1.9.0, 1.10.0
> Reporter: Alexey Serbin
> Assignee: Alexey Serbin
> Priority: Major
> Labels: stability
> Fix For: 1.11.0
>
>
> In some cases when WAL operations are slow, a follower replica may grant
> {{yes}} votes right after processing recent Raft transactions even if
> currently established leader replica is alive and well. Vote requests might
> come from so called disruptive replicas in the cluster. The disruptive
> replicas might ask for votes of higher Raft term than the current term with
> established and well being leader.
> In some cases that might lead to multiple successive election rounds even if
> there were no actual reason to re-elect leader replicas.
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