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https://issues.apache.org/jira/browse/YARN-11831?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated YARN-11831:
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Labels: pull-request-available (was: )
> Docker executor does not signal applications with kill
> ------------------------------------------------------
>
> Key: YARN-11831
> URL: https://issues.apache.org/jira/browse/YARN-11831
> Project: Hadoop YARN
> Issue Type: Bug
> Components: nodemanager
> Affects Versions: 3.4.1
> Reporter: Adam Binford
> Priority: Major
> Labels: pull-request-available
>
> With the Docker runtime, applications do not receive signals from the
> NodeManagers and are not able to exit cleanly. This is because the root
> process in the container is "bash -c", as set by the UnixShellScriptBuilder,
> and bash does not forward signals to its child processes.
> This only affects the Docker runtime because other Linux runtimes use the
> system "kill" command with the process group ID, not just the PID, so all
> child processes receive the kill signal even if the parent process doesn't
> forward it.
> The fix is either:
> - Remove the "bash -c" process from the tree, I'm not sure why this needs to
> exist as the launch_container.sh script is already running in bash to begin
> with.
> - Use the system kill command on the PID reported by docker instead of using
> "docker kill"
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