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https://issues.apache.org/jira/browse/HADOOP-9220?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13559081#comment-13559081
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Bikas Saha commented on HADOOP-9220:
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Not quite sure I understand. Todd had added a reference to the ZK client so
that the Elector would only accept watch notifications from the last ZK client.
That means only 1 ZK client would be driving the Elector.
> Unnecessary transition to standby in ActiveStandbyElector
> ---------------------------------------------------------
>
> Key: HADOOP-9220
> URL: https://issues.apache.org/jira/browse/HADOOP-9220
> Project: Hadoop Common
> Issue Type: Bug
> Components: ha
> Reporter: Tom White
> Assignee: Tom White
> Attachments: HADOOP-9220.patch, HADOOP-9220.patch
>
>
> When performing a manual failover from one HA node to a second, under some
> circumstances the second node will transition from standby -> active ->
> standby -> active. This is with automatic failover enabled, so there is a ZK
> cluster doing leader election.
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