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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-5797) Elapsed time for failed tasks that never started is wrong
Date Fri, 14 Mar 2014 22:38:43 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5797?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13935752#comment-13935752
] 

Hadoop QA commented on MAPREDUCE-5797:
--------------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12634852/patch-MapReduce-5797-v2.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}.  There were no new javadoc 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-common.

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

Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/4429//testReport/
Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/4429//console

This message is automatically generated.

>  Elapsed time for failed tasks that never started is  wrong 
> ------------------------------------------------------------
>
>                 Key: MAPREDUCE-5797
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5797
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: jobhistoryserver, webapps
>    Affects Versions: 0.23.9
>            Reporter: Rushabh S Shah
>            Assignee: Rushabh S Shah
>         Attachments: patch-MapReduce-5797-v2.patch, patch-MapReduce-5797.patch
>
>
> The elapsed time for tasks in a failed job that were never
> started can be way off.  It looks like we're marking the start time as the
> beginning of the epoch (i.e.: start time = -1) but the finish time is when the
> task was marked as failed when the whole job failed.  That causes the
> calculated elapsed time of the task to be a ridiculous number of hours.
> Tasks that fail without any attempts shouldn't have start/finish/elapsed times.



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