Details

    • Type: Bug Bug
    • Status: Resolved
    • Priority: Minor Minor
    • Resolution: Fixed
    • Affects Version/s: 0.20.3, 0.21.1, 0.22.0
    • Fix Version/s: 0.22.0
    • Component/s: None
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      IFile assumes that when it has a codec it can always get a compressor. This fails when mapred.compress.map.output is true but the native libraries are not installed, resulting in an NPE:

      java.lang.NullPointerException
      at org.apache.hadoop.mapred.IFile$Writer.<init>(IFile.java:102)
      at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.sortAndSpill(MapTask.java:1198)
      at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.flush(MapTask.java:1091)
      at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:359)
      at org.apache.hadoop.mapred.MapTask.run(MapTask.java:307)
      at org.apache.hadoop.mapred.Child.main(Child.java:170)
      

      Let's make IFile handle this case by logging and using non-compressed streams.l

      1. mapred-1784-1.patch
        2 kB
        Eli Collins
      2. mapred-1784-2.patch
        5 kB
        Eli Collins

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          People

          • Assignee:
            Eli Collins
            Reporter:
            Eli Collins
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            Dates

            • Created:
              Updated:
              Resolved:

              Development