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https://issues.apache.org/jira/browse/UIMA-5611?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16199493#comment-16199493
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Burn Lewis commented on UIMA-5611:
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These became defunct processes so kill -9 won't help ... perhaps agent should
treat them as gone.
> UIMA-DUCC: Agent fails to kill a child process sometimes
> --------------------------------------------------------
>
> Key: UIMA-5611
> URL: https://issues.apache.org/jira/browse/UIMA-5611
> Project: UIMA
> Issue Type: Bug
> Components: DUCC
> Reporter: Jerry Cwiklik
> Assignee: Jerry Cwiklik
> Fix For: 2.2.2-Ducc
>
>
> Improve detection of child processes which fail to stop after kill -9 was
> sent. If kill -9 is sent by an agent while a child process is experiencing an
> OOM, the signal is not acted upon and the process remains running.
> An agent should retry kill -9 on regular basis (configured in
> ducc.properties) if a process is still standing after kill -9.
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