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https://issues.apache.org/jira/browse/UIMA-3645?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jerry Cwiklik closed UIMA-3645.
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Resolution: Fixed
> Ducc Agent logs excessively when cleaning up on startup
> -------------------------------------------------------
>
> Key: UIMA-3645
> URL: https://issues.apache.org/jira/browse/UIMA-3645
> Project: UIMA
> Issue Type: Bug
> Components: DUCC
> Affects Versions: 1.0-Ducc
> Reporter: Jerry Cwiklik
> Assignee: Jerry Cwiklik
>
> When an Agent starts up it tries to cleanup the node of running processes
> that are associated with cgroups on the node. It reads pids of these process
> from each of active cgroups and kills them via -9.
> All of this works fine except if there is a zombie process. This is a process
> that is dead but still appears in the OS process map. In this case the cgroup
> exist and the process is still associated with it. Killing such process with
> -9 has no effect as the process is already dead. The bug is that the agent
> goes into an infinite loop waiting for the zombie to go away and worse yet,
> it keeps logging at 200ms intervals.
> Add detection of zombies and prevent logging.
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