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https://issues.apache.org/jira/browse/HADOOP-1556?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12509763
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Hadoop QA commented on HADOOP-1556:
-----------------------------------
+1
http://issues.apache.org/jira/secure/attachment/12360949/1556.patch applied and
successfully tested against trunk revision r552548.
Test results:
http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/358/testReport/
Console output:
http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/358/console
> 9 unit test failures: file.out.index already exists
> ---------------------------------------------------
>
> Key: HADOOP-1556
> URL: https://issues.apache.org/jira/browse/HADOOP-1556
> Project: Hadoop
> Issue Type: Bug
> Components: mapred
> Reporter: Nigel Daley
> Assignee: Devaraj Das
> Fix For: 0.14.0
>
> Attachments: 1556.patch
>
>
> In my nightly unit testing, 9 unit tests failed June 25 and again July 2, all
> with this exception:
> java.io.IOException: Target build/test/mapred/local/map_0005/file.out.index
> already exists
> at org.apache.hadoop.fs.FileUtil.checkDest(FileUtil.java:246)
> at org.apache.hadoop.fs.FileUtil.copy(FileUtil.java:93)
> at
> org.apache.hadoop.fs.RawLocalFileSystem.rename(RawLocalFileSystem.java:207)
> at
> org.apache.hadoop.fs.ChecksumFileSystem.rename(ChecksumFileSystem.java:476)
> at
> org.apache.hadoop.mapred.MapTask$MapOutputBuffer.mergeParts(MapTask.java:490)
> at
> org.apache.hadoop.mapred.MapTask$MapOutputBuffer.flush(MapTask.java:593)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:190)
> at
> org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:131)
> I'm concerned this could be a race conditrion. The unit tests are:
> org.apache.hadoop.fs.TestDFSIO.testIOs
> org.apache.hadoop.fs.TestFileSystem.testFs
> org.apache.hadoop.mapred.TestAggregates.testAggregates
> org.apache.hadoop.mapred.TestFieldSelection.testFieldSelection
> org.apache.hadoop.mapred.TestLocalMRNotification.testMR
> org.apache.hadoop.mapred.TestMapOutputType.testNoMismatch
> org.apache.hadoop.mapred.TestMapRed.testMapred
> org.apache.hadoop.mapred.TestMapRed.testCompression
> org.apache.hadoop.record.TestRecordMR.testMapred
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