[jira] [Commented] (YARN-9074) Docker container rm command should be executed after stop

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

    [ https://issues.apache.org/jira/browse/YARN-9074?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16733516#comment-16733516 ] 

Eric Yang commented on YARN-9074:
---------------------------------

[~uranus] I am inclined to mark this as won't fix.  Any objection?

> Docker container rm command should be executed after stop
> ---------------------------------------------------------
>
>                 Key: YARN-9074
>                 URL: https://issues.apache.org/jira/browse/YARN-9074
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Zhaohui Xin
>            Assignee: Zhaohui Xin
>            Priority: Major
>         Attachments: YARN-9074.001.patch, image-2018-12-01-11-36-12-448.png, image-2018-12-01-11-38-18-191.png
>
>
> {code:java}
> @Override
> public void transition(ContainerImpl container, ContainerEvent event) {
> container.setIsReInitializing(false);
> // Set exit code to 0 on success 
> container.exitCode = 0;
> // TODO: Add containerWorkDir to the deletion service.
> if (DockerLinuxContainerRuntime.isDockerContainerRequested(
> container.daemonConf,
> container.getLaunchContext().getEnvironment())) {
> removeDockerContainer(container);
> }
> if (clCleanupRequired) {
> container.dispatcher.getEventHandler().handle(
> new ContainersLauncherEvent(container,
> ContainersLauncherEventType.CLEANUP_CONTAINER));
> }
> container.cleanup();
> }{code}
> Now, when container is finished, NM firstly execute "_docker rm xxx"_  to remove it and this thread is placed in DeletionService. see more in YARN-5366 .
> Next, NM will execute "_docker stop_" and "docker kill" command. these tow commands are wrapped up in ContainerCleanup thread and executed by ContainersLauncher. see more in YARN-7644. 
> The above will cause the container's cleanup to be split into two threads. I think we should refactor these code to make all docker container killing process be place in ContainerCleanup thread and "_docker rm_" should be executed last.



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