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https://issues.apache.org/jira/browse/HADOOP-1642?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12536177
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Johan Oskarsson commented on HADOOP-1642:
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I applied the patch to the 0.15 branch and reran my program, this time it got a
bit further. The above error didn't show up.
Instead i got this:
java.io.IOException: Target /tmp/hadoop-johan/mapred/local/map_0000/file.out
already exists
at org.apache.hadoop.fs.FileUtil.checkDest(FileUtil.java:246)
at org.apache.hadoop.fs.FileUtil.copy(FileUtil.java:125)
at org.apache.hadoop.fs.FileUtil.copy(FileUtil.java:116)
at
org.apache.hadoop.fs.RawLocalFileSystem.rename(RawLocalFileSystem.java:180)
at
org.apache.hadoop.fs.ChecksumFileSystem.rename(ChecksumFileSystem.java:380)
at
org.apache.hadoop.mapred.MapTask$MapOutputBuffer.mergeParts(MapTask.java:501)
at
org.apache.hadoop.mapred.MapTask$MapOutputBuffer.flush(MapTask.java:607)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:193)
at
org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:133)
> Jobs using LocalJobRunner + JobControl fails
> --------------------------------------------
>
> Key: HADOOP-1642
> URL: https://issues.apache.org/jira/browse/HADOOP-1642
> Project: Hadoop
> Issue Type: Bug
> Affects Versions: 0.13.0
> Reporter: Johan Oskarsson
> Assignee: Doug Cutting
> Priority: Critical
> Fix For: 0.15.0
>
> Attachments: HADOOP-1642.patch
>
>
> If I run several jobs at the same time using JobControl and the
> LocalJobRunner i get:
> java.io.IOException: Target
> /tmp/hadoop-johan/mapred/local/localRunner/job_local_1.xml already exists.
> It seems like the JobControl class tries to run multiple jobs with the same
> jobid, causing the exception.
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