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https://issues.apache.org/jira/browse/FLINK-30474?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17680586#comment-17680586
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Matthias Pohl commented on FLINK-30474:
---------------------------------------
Added PR #21537 which resolves this issue along FLINK-30462
> DefaultMultipleComponentLeaderElectionService triggers HA backend change even
> if it's not the leader
> ----------------------------------------------------------------------------------------------------
>
> Key: FLINK-30474
> URL: https://issues.apache.org/jira/browse/FLINK-30474
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Coordination
> Affects Versions: 1.16.0, 1.17.0, 1.15.3
> Reporter: Matthias Pohl
> Assignee: Matthias Pohl
> Priority: Critical
>
> {{DefaultMultipleComponentLeaderElectionService}} calls
> {{LeaderElectionEventHandler#onLeaderInformationChange}} in any case even
> though the contracts of that method states that it should be only called by
> the leader to update the HA backend information (see
> [JavaDoc|https://github.com/apache/flink/blob/5a2f220e31c50306a60aae8281f0ab4073fb85e1/flink-runtime/src/main/java/org/apache/flink/runtime/leaderelection/LeaderElectionEventHandler.java#L46-L50]).
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