[jira] [Created] (YARN-7644) NM gets backed up deleting docker containers

["Eric Badger (JIRA)" <ji...@apache.org>]

Eric Badger created YARN-7644:
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             Summary: 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
            Reporter: Eric Badger
            Assignee: Eric Badger


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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