[jira] [Resolved] (YARN-4331) Restarting NodeManager leaves orphaned containers

["Joseph Francis (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/YARN-4331?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Joseph Francis resolved YARN-4331.
----------------------------------
    Resolution: Not A Problem

> Restarting NodeManager leaves orphaned containers
> -------------------------------------------------
>
>                 Key: YARN-4331
>                 URL: https://issues.apache.org/jira/browse/YARN-4331
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: nodemanager, yarn
>    Affects Versions: 2.7.1
>            Reporter: Joseph Francis
>            Priority: Critical
>
> We are seeing a lot of orphaned containers running in our production clusters.
> I tried to simulate this locally on my machine and can replicate the issue by killing nodemanager.
> I'm running Yarn 2.7.1 with RM state stored in zookeeper and deploying samza jobs.
> Steps:
> {quote}1. Deploy a job 
> 2. Issue a kill -9 signal to nodemanager 
> 3. We should see the AM and its container running without nodemanager
> 4. AM should die but the container still keeps running
> 5. Restarting nodemanager brings up new AM and container but leaves the orphaned container running in the background
> {quote}
> This is effectively causing double processing of data.



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