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From "Nigel Daley (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-1556) 9 unit test failures: file.out.index already exists
Date Mon, 02 Jul 2007 04:08:04 GMT
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
             Fix For: 0.14.0


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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