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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-4817) Hardcoded task ping timeout kills tasks localizing large amounts of data
Date Wed, 28 Nov 2012 17:32:59 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4817?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13505677#comment-13505677
] 

Hadoop QA commented on MAPREDUCE-4817:
--------------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12555186/MAPREDUCE-4817.patch
  against trunk revision .

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

    {color:red}-1 tests included{color}.  The patch doesn't appear to include any new or modified
tests.
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    {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-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app.

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

Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/3073//testReport/
Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/3073//console

This message is automatically generated.
                
> Hardcoded task ping timeout kills tasks localizing large amounts of data
> ------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-4817
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4817
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: applicationmaster, mr-am
>    Affects Versions: 0.23.3, 2.0.3-alpha
>            Reporter: Jason Lowe
>            Assignee: Thomas Graves
>            Priority: Critical
>         Attachments: MAPREDUCE-4817.patch, MAPREDUCE-4817.patch
>
>
> When a task is launched and spends more than 5 minutes localizing files, the AM will
kill the task due to ping timeout.  The AM's TaskHeartbeatHandler currently tracks tasks via
a progress timeout and a ping timeout.  The progress timeout can be controlled via mapreduce.task.timeout
and even disabled by setting the property to 0.  The ping timeout, however, is hardcoded to
5 minutes and cannot be configured.  Therefore if the task takes too long localizing, it never
gets running in order to ping back to the AM and the AM kills it due to ping timeout.

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