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https://issues.apache.org/jira/browse/HADOOP-14331?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Junping Du updated HADOOP-14331:
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Target Version/s: 2.8.3 (was: 2.8.1, 2.8.3)
> HadoopScheduledThreadPoolExecutor broken for periodic task running
> ------------------------------------------------------------------
>
> Key: HADOOP-14331
> URL: https://issues.apache.org/jira/browse/HADOOP-14331
> Project: Hadoop Common
> Issue Type: Bug
> Components: common
> Affects Versions: 2.8.0, 3.0.0-alpha1
> Reporter: Gabriel Reid
> Assignee: Gabriel Reid
> Attachments: HADOOP-14331_demonstrate_bug.patch
>
>
> The HadoopScheduledThreadPoolExecutor (introduced in HADOOP-12749) is broken
> for the scheduling of periodic tasks (i.e. for tasks submitted with
> {{scheduleAtFixedRate}} and {{scheduleAfterFixedDelay}}).
> The behavior of the executor with these methods is that the underlying task
> is executed once, and then blocks the running thread indefinitely in
> {{ExecutorHelper::logThrowableFromAfterExecute}}, meaning further executions
> of the task won't run, and will also block the running thread from running
> any other tasks.
> A quick scan of the source has shown me that these methods are used on
> HadoopScheduledThreadPoolExecutor instances in several places in the code
> base, at least in {{JobHistory}} and {{CleanerService}}, which appears to
> mean that these classes also no longer function correctly.
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