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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 Mon, 11 Nov 2013 20:37:17 GMT

    [ https://issues.apache.org/jira/browse/YARN-1395?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13819344#comment-13819344
] 

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

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12613212/YARN-1395.2.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:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version
1.3.9) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:green}+1 core tests{color}.  The patch passed unit tests in hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-applications-distributedshell.

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-YARN-Build/2414//testReport/
Console output: https://builds.apache.org/job/PreCommit-YARN-Build/2414//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, YARN-1395.2.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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