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From "Eric Yang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-7644) NM gets backed up deleting docker containers
Date Wed, 03 Oct 2018 16:02:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-7644?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16637117#comment-16637117
] 

Eric Yang commented on YARN-7644:
---------------------------------

[~csingh] The mvn install on root seems like a release branch error.  We can trigger test
again after trunk has been fixed.  I think ContainerCleanup class belong to org.apache.hadoop.yarn.server.nodemanager.containermanager.deletion.task
instead of in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher for reusing
existing package structure.  

Some checkstyle can be clean up.

[~ebadger] [~jlowe] Do you have any concern in the async task for reapContainer?

> NM gets backed up deleting docker containers
> --------------------------------------------
>
>                 Key: YARN-7644
>                 URL: https://issues.apache.org/jira/browse/YARN-7644
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: nodemanager
>            Reporter: Eric Badger
>            Assignee: Chandni Singh
>            Priority: Major
>              Labels: Docker
>         Attachments: YARN-7644.001.patch
>
>
> We are sending a {{docker stop}} to the docker container with a timeout of 10 seconds
when we shut down a container. If the container does not stop after 10 seconds then we force
kill it. However, the {{docker stop}} command is a blocking call. So in cases where lots of
containers don't go down with the initial SIGTERM, we have to wait 10+ seconds for the {{docker
stop}} to return. This ties up the ContainerLaunch handler and so these kill events back up.
It also appears to be backing up new container launches as well. 



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