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https://issues.apache.org/jira/browse/MAPREDUCE-2727?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13083086#comment-13083086
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Jeffrey Naisbitt commented on MAPREDUCE-2727:
---------------------------------------------
Bobby Evans is actually currently working on removing the extra SleepJob - I
believe there are some issues that need to be resolved there (in a separate
Jira).
As far as trunk, it does look like it has the same issue, so I'll post a patch
for that as well.
> 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.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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