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  1. Hadoop Map/Reduce
  2. MAPREDUCE-2531

org.apache.hadoop.mapred.jobcontrol.getAssignedJobID throw class cast exception

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Details

    • Bug
    • Status: Closed
    • Blocker
    • Resolution: Fixed
    • 0.22.0
    • 0.22.0, 0.23.0
    • client
    • None
    • Reviewed

    Description

      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

      Attachments

        1. MR-2531-yarn-v1.patch
          2 kB
          Robert Joseph Evans
        2. MR-2531-V1-trunk.patch
          2 kB
          Robert Joseph Evans

        Activity

          People

            revans2 Robert Joseph Evans
            revans2 Robert Joseph Evans
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            Dates

              Created:
              Updated:
              Resolved: