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https://issues.apache.org/jira/browse/MAPREDUCE-2284?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13001034#comment-13001034
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Tom White commented on MAPREDUCE-2284:
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> I wonder if this is due to clover? The test does a lot of busy loops, maybe
> when clover instrumentation is on, it just runs too slowly?
Looks like this is exactly what is happening:
https://hudson.apache.org/hudson/job/Hadoop-Mapreduce-trunk/606/testReport/org.apache.hadoop.mapreduce/TestLocalRunner/testMultiMaps/
We could fix this by removing the busy loops, replacing them with loops with
different sleep times.
> TestLocalRunner.testMultiMaps times out
> ---------------------------------------
>
> Key: MAPREDUCE-2284
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2284
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: test
> Affects Versions: 0.22.0
> Reporter: Todd Lipcon
> Priority: Critical
> Fix For: 0.22.0
>
> Attachments: mapreduce-2284-help-diagnose.txt
>
>
> This test has timed out in a number of Hudson builds.
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