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From "Gera Shegalov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2934) Improve handling of container's stderr
Date Thu, 17 Dec 2015 09:17:47 GMT

    [ https://issues.apache.org/jira/browse/YARN-2934?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15061768#comment-15061768
] 

Gera Shegalov commented on YARN-2934:
-------------------------------------

-1 on manual regexes in favor of code reuse. 99.9% of YARN users will never change this conf.
Simple globs I was suggesting already cover even AppMaster.stderr. 

In ContainerLaunch#getErrorLogTail
get rid of 
{code}
    if (containerLogDir == null) {
      return null;
    }
{code}

it cannot be null


> Improve handling of container's stderr 
> ---------------------------------------
>
>                 Key: YARN-2934
>                 URL: https://issues.apache.org/jira/browse/YARN-2934
>             Project: Hadoop YARN
>          Issue Type: Improvement
>            Reporter: Gera Shegalov
>            Assignee: Naganarasimha G R
>            Priority: Critical
>         Attachments: YARN-2934.v1.001.patch, YARN-2934.v1.002.patch, YARN-2934.v1.003.patch,
YARN-2934.v1.004.patch, YARN-2934.v1.005.patch, YARN-2934.v1.006.patch, YARN-2934.v1.007.patch
>
>
> Most YARN applications redirect stderr to some file. That's why when container launch
fails with {{ExitCodeException}} the message is empty.



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