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From "Ravi Gummadi (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (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:all-tabpanel
]

Ravi Gummadi updated MAPREDUCE-3953:
------------------------------------

    Resolution: Fixed
        Status: Resolved  (was: Patch Available)
    
> 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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