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https://issues.apache.org/jira/browse/MAPREDUCE-4678?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13464237#comment-13464237
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Chris McConnell commented on MAPREDUCE-4678:
--------------------------------------------
There doesn't seem to be a test class for this example, if we need/want one let
me know.
> Running the Pentomino example with defaults throws
> java.lang.NegativeArraySizeException
> ---------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-4678
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4678
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 0.20.205.0, 0.23.0
> Reporter: Chris McConnell
> Priority: Minor
> Attachments: MAPREDUCE-4678.patch
>
>
> HADOOP_HOME/hadoop-examples.jar pentomino <output_dir> will fail with the
> following error message:
> INFO util.NativeCodeLoader: Loaded the native-hadoop library
> INFO mapred.FileInputFormat: Total input paths to process : 1
> INFO mapred.JobClient: Running job: job_xxxxx
> INFO mapred.JobClient: map 0% reduce 0%
> INFO mapred.JobClient: Task Id : attempt_xxxx, Status : FAILED
> java.lang.NegativeArraySizeException
> at org.apache.hadoop.examples.dancing.DistributedPentomino$PentMap.map(Di
> stributedPentomino.java:95)
> at org.apache.hadoop.examples.dancing.DistributedPentomino$PentMap.map(Di
> stributedPentomino.java:51)
> at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:50)
> at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:391)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:325)
> at org.apache.hadoop.mapred.Child$4.run(Child.java:270)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:396)
> at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformat
> ion.java:1177)
> at org.apache.hadoop.mapred.Child.main(Child.java:264)
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