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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1395) Distributed shell application master launched with debug flag can hang waiting for external ls process.
Date Sat, 09 Nov 2013 21:36:17 GMT

    [ https://issues.apache.org/jira/browse/YARN-1395?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13818276#comment-13818276
] 

Hadoop QA commented on YARN-1395:
---------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12613010/YARN-1395.1.patch
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 1 new or modified
test files.

    {color:red}-1 javac{color:red}.  The patch appears to cause the build to fail.

Console output: https://builds.apache.org/job/PreCommit-YARN-Build/2402//console

This message is automatically generated.

> Distributed shell application master launched with debug flag can hang waiting for external
ls process.
> -------------------------------------------------------------------------------------------------------
>
>                 Key: YARN-1395
>                 URL: https://issues.apache.org/jira/browse/YARN-1395
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: applications/distributed-shell
>    Affects Versions: 3.0.0, 2.2.0
>            Reporter: Chris Nauroth
>            Assignee: Chris Nauroth
>         Attachments: YARN-1395.1.patch
>
>
> Distributed shell launched with the debug flag will run {{ApplicationMaster#dumpOutDebugInfo}}.
 This method launches an external process to run ls and print the contents of the current
working directory.  We've seen that this can cause the application master to hang on {{Process#waitFor}}.



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