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https://issues.apache.org/jira/browse/METRON-1775?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16613444#comment-16613444
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ASF GitHub Bot commented on METRON-1775:
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Github user asfgit closed the pull request at:
https://github.com/apache/metron/pull/1194
> Transient exception could prevent expired profiles from being flushed
> ---------------------------------------------------------------------
>
> Key: METRON-1775
> URL: https://issues.apache.org/jira/browse/METRON-1775
> Project: Metron
> Issue Type: Improvement
> Reporter: Nick Allen
> Assignee: Nick Allen
> Priority: Minor
>
> In the Storm Profiler, the ProfileBuilderBolt uses a separate thread to flush
> expired profiles. Expired profiles are those that have not received a
> message for an extended period of time. That period of time is called the
> profile time-to-live (profiler.ttl). This is done to avoid potential memory
> leaks.
> This separate thread is scheduled using
> java.util.concurrent.ScheduledExecutorService#scheduleAtFixedRate. The
> documentation for scheduleAtFixedRate says that if an exception is thrown,
> subsequent executions will be suppressed. We do not want this to happen. If
> an exception occurs, we need to log it and continue, ensuring that expired
> profiles will continue to flush.
> I have no direct proof that this has caused a problem, but it certainly is a
> potential issue that should be addressed.
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