9 unit test failures: file.out.index already exists
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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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