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Date: Sat, 13 Aug 2011 20:29:27 +0000 (UTC)
From: "Arun C Murthy (JIRA)" <jira@apache.org>
To: mapreduce-issues@hadoop.apache.org
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Subject: [jira] [Updated] (MAPREDUCE-2727) MR-279: SleepJob throws divide by
 zero exception when count = 0
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     [ https://issues.apache.org/jira/browse/MAPREDUCE-2727?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Arun C Murthy updated MAPREDUCE-2727:
-------------------------------------

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

I just committed this to both trunk and MR-279. Thanks Jeffrey!

> MR-279: SleepJob throws divide by zero exception when count = 0
> ---------------------------------------------------------------
>
>                 Key: MAPREDUCE-2727
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2727
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.23.0
>            Reporter: Jeffrey Naisbitt
>            Assignee: Jeffrey Naisbitt
>             Fix For: 0.23.0
>
>         Attachments: MAPREDUCE-2727-trunk.patch, MAPREDUCE-2727.patch
>
>
> When the count is 0 for mappers or reducers, a divide-by-zero exception is thrown.  There are existing checks to error out when count < 0, which obviously doesn't handle the 0 case.  This is causing the MRReliabilityTest to fail.

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