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Hadoop QA commented on MAPREDUCE-2531: -------------------------------------- -1 overall. Here are the results of testing the latest attachment http://issues.apache.org/jira/secure/attachment/12480569/MR-2531-yarn-v1.patch against trunk revision 1127444. +1 @author. The patch does not contain any @author tags. +1 tests included. The patch appears to include 3 new or modified tests. -1 patch. The patch command could not apply the patch. Console output: https://builds.apache.org/hudson/job/PreCommit-MAPREDUCE-Build/309//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 > Fix For: 0.23.0 > > Attachments: MR-2531-V1-trunk.patch, MR-2531-yarn-v1.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 -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira