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https://issues.apache.org/jira/browse/MAPREDUCE-2531?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13038743#comment-13038743
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Hadoop QA commented on MAPREDUCE-2531:
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+1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12480276/MR-2531-V1-trunk.patch
against trunk revision 1126801.
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 3 new or modified tests.
+1 javadoc. The javadoc tool did not generate any warning messages.
+1 javac. The applied patch does not increase the total number of javac
compiler warnings.
+1 findbugs. The patch does not introduce any new Findbugs (version 1.3.9)
warnings.
+1 release audit. The applied patch does not increase the total number of
release audit warnings.
+1 core tests. The patch passed core unit tests.
+1 contrib tests. The patch passed contrib unit tests.
+1 system test framework. The patch passed system test framework compile.
Test results:
https://builds.apache.org/hudson/job/PreCommit-MAPREDUCE-Build/302//testReport/
Findbugs warnings:
https://builds.apache.org/hudson/job/PreCommit-MAPREDUCE-Build/302//artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output:
https://builds.apache.org/hudson/job/PreCommit-MAPREDUCE-Build/302//console
This message is automatically generated.
> org.apache.hadoop.mapred.jobcontrol.getAssignedJobID throw class cast
> exception
> --------------------------------------------------------------------------------
>
> Key: MAPREDUCE-2531
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2531
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: client
> Affects Versions: 0.22.0
> Reporter: Robert Joseph Evans
> Assignee: Robert Joseph Evans
> Attachments: MR-2531-V1-trunk.patch
>
>
> When using a combination of the mapred and mapreduce APIs (PIG) it is
> possible to have the following exception
> Caused by: java.lang.ClassCastException: org.apache.hadoop.mapreduce.JobID
> cannot be cast to
> org.apache.hadoop.mapred.JobID
> at
> org.apache.hadoop.mapred.jobcontrol.Job.getAssignedJobID(Job.java:71)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher.launchPig(MapReduceLauncher.java:239)
> at org.apache.pig.PigServer.launchPlan(PigServer.java:1325)
> ... 29 more
> This is because the JobID is just downcast. It should be calling
> JobID.downgrade
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