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https://issues.apache.org/jira/browse/ACCUMULO-2422?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13915867#comment-13915867
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Eric Newton commented on ACCUMULO-2422:
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Yep, writing zookeeper clients is tricky stuff. Excellent work finding the
problem!
> Backup master can miss acquiring lock when primary exits
> --------------------------------------------------------
>
> Key: ACCUMULO-2422
> URL: https://issues.apache.org/jira/browse/ACCUMULO-2422
> Project: Accumulo
> Issue Type: Bug
> Components: fate, master
> Affects Versions: 1.5.0
> Reporter: Bill Havanki
> Assignee: Bill Havanki
> Priority: Critical
> Labels: failover, locking
>
> While running randomwalk tests with agitation for the 1.5.1 release, I've
> seen situations where a backup master that is eligible to grab the master
> lock continues to wait. When this condition arises and the other master
> restarts, both wait for the lock without success.
> I cannot reproduce the problem reliably, and I think more investigation is
> needed to see what circumstances could be causing the problem.
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