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Posted to yarn-issues@hadoop.apache.org by "Karthik Kambatla (JIRA)" <ji...@apache.org> on 2015/06/17 01:11:01 UTC

[jira] [Commented] (YARN-3811) NM restarts could lead to app failures

    [ https://issues.apache.org/jira/browse/YARN-3811?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14588984#comment-14588984 ] 

Karthik Kambatla commented on YARN-3811:
----------------------------------------

We ran into this in our rolling upgrade tests. 

> NM restarts could lead to app failures
> --------------------------------------
>
>                 Key: YARN-3811
>                 URL: https://issues.apache.org/jira/browse/YARN-3811
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: nodemanager
>    Affects Versions: 2.7.0
>            Reporter: Karthik Kambatla
>            Assignee: Karthik Kambatla
>            Priority: Critical
>
> Consider the following scenario:
> 1. RM assigns a container on node N to an app A.
> 2. Node N is restarted
> 3. A tries to launch container on node N.
> 3 could lead to an NMNotYetReadyException depending on whether NM N has registered with the RM. In MR, this is considered a task attempt failure. A few of these could lead to a task/job failure.



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