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From "Hudson (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-3953) Gridmix throws NPE and does not simulate a job if the trace contains null taskStatus for a task
Date Wed, 21 Mar 2012 09:55:40 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3953?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13234234#comment-13234234
] 

Hudson commented on MAPREDUCE-3953:
-----------------------------------

Integrated in Hadoop-Hdfs-trunk-Commit #1984 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk-Commit/1984/])
    MAPREDUCE-3953. [Gridmix] Gridmix throws NPE and does not simulate a job if the trace
contains null taskStatus for a task.(ravigummadi) (Revision 1303330)

     Result = SUCCESS
ravigummadi : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1303330
Files : 
* /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
* /hadoop/common/trunk/hadoop-mapreduce-project/src/contrib/gridmix/src/java/org/apache/hadoop/mapred/gridmix/JobFactory.java
* /hadoop/common/trunk/hadoop-tools/hadoop-rumen/src/main/java/org/apache/hadoop/tools/rumen/ZombieJob.java

                
> Gridmix throws NPE and does not simulate a job if the trace contains null taskStatus
for a task
> -----------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-3953
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3953
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>            Reporter: Ravi Gummadi
>            Assignee: Ravi Gummadi
>         Attachments: 3953.v1.patch
>
>
> In a trace file, if a succeeded job contains a failed task, then that task's taskStatus
will be null. This is causing NPE in Gridmix and then Gridmix is ignoring/not-considering
such jobs for simulation. The job could succeed even with failed tasks if the job submitter
in original cluster configured that job to tolerate failures using mapreduce.map.failures.maxpercent
and mapreduce.reduce.failures.maxpercent.

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