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Posted to mapreduce-dev@hadoop.apache.org by "Robert Joseph Evans (JIRA)" <ji...@apache.org> on 2011/05/24 18:07:48 UTC

[jira] [Created] (MAPREDUCE-2531) org.apache.hadoop.mapred.jobcontrol.getAssignedJobID throw class cast exception

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


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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[jira] [Resolved] (MAPREDUCE-2531) org.apache.hadoop.mapred.jobcontrol.getAssignedJobID throw class cast exception

Posted by "Konstantin Shvachko (Resolved) (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/MAPREDUCE-2531?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Konstantin Shvachko resolved MAPREDUCE-2531.
--------------------------------------------

      Resolution: Fixed
    Hadoop Flags: Reviewed

Committed to branch 0.22.
Moved changes to 0.22 section in trunk and branch 0.23.
                
> 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
>            Priority: Blocker
>             Fix For: 0.22.0, 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

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[jira] [Reopened] (MAPREDUCE-2531) org.apache.hadoop.mapred.jobcontrol.getAssignedJobID throw class cast exception

Posted by "Konstantin Shvachko (Reopened) (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/MAPREDUCE-2531?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Konstantin Shvachko reopened MAPREDUCE-2531:
--------------------------------------------


Reopening for committing to 0.22
                
> 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

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