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Date: Wed, 20 Sep 2017 03:54:00 +0000 (UTC)
From: "Yang Wang (JIRA)" <jira@apache.org>
To: yarn-issues@hadoop.apache.org
Message-ID: <JIRA.13073815.1495449591000.153352.1505879640160@Atlassian.JIRA>
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References: <JIRA.13073815.1495449591000@Atlassian.JIRA> <JIRA.13073815.1495449591692@jira-lw-us.apache.org>
Subject: [jira] [Updated] (YARN-6630) Container worker dir could not recover
 when NM restart
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archived-at: Wed, 20 Sep 2017 03:54:06 -0000


     [ https://issues.apache.org/jira/browse/YARN-6630?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yang Wang updated YARN-6630:
----------------------------
    Attachment: YARN-6630.002.patch

> Container worker dir could not recover when NM restart
> ------------------------------------------------------
>
>                 Key: YARN-6630
>                 URL: https://issues.apache.org/jira/browse/YARN-6630
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Yang Wang
>            Assignee: Yang Wang
>         Attachments: YARN-6630.001.patch, YARN-6630.002.patch
>
>
> When ContainerRetryPolicy is NEVER_RETRY, container worker dir will not be saved in NM state store. 
> {code:title=ContainerLaunch.java}
> ...
>   private void recordContainerWorkDir(ContainerId containerId,
>       String workDir) throws IOException{
>     container.setWorkDir(workDir);
>     if (container.isRetryContextSet()) {
>       context.getNMStateStore().storeContainerWorkDir(containerId, workDir);
>     }
>   }
> {code}
> Then NM restarts, container.workDir could not recover and is null, and may cause some exceptions.
> We already have a problem, after NM restart, we send a resource localization request while container is running(YARN-1503), then NM will fail because of the following exception.
> So, container.workdir always need to be saved in NM state store.
> {code:title=ContainerImpl.java}
>   static class ResourceLocalizedWhileRunningTransition
>       extends ContainerTransition {
> ...
>           String linkFile = new Path(container.workDir, link).toString();
> ...
> {code}
> {code}
> java.lang.IllegalArgumentException: Can not create a Path from a null string
>         at org.apache.hadoop.fs.Path.checkPathArg(Path.java:159)
>         at org.apache.hadoop.fs.Path.<init>(Path.java:175)
>         at org.apache.hadoop.fs.Path.<init>(Path.java:110)
> ... ...
> {code}


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