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  1. Hadoop Map/Reduce
  2. MAPREDUCE-1700

User supplied dependencies may conflict with MapReduce system JARs

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Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 2.0.3-alpha
    • task
    • None
    • Reviewed

    Description

      If user code has a dependency on a version of a JAR that is different to the one that happens to be used by Hadoop, then it may not work correctly. This happened with user code using a different version of Avro, as reported here.

      The problem is analogous to the one that application servers have with WAR loading. Using a specialized classloader in the Child JVM is probably the way to solve this.

      Attachments

        1. MAPREDUCE-1700.patch
          42 kB
          Thomas White
        2. MAPREDUCE-1700.patch
          38 kB
          Thomas White
        3. MAPREDUCE-1700-ccl.patch
          17 kB
          Thomas White
        4. MAPREDUCE-1700-ccl.patch
          29 kB
          Thomas White
        5. MAPREDUCE-1700.patch
          29 kB
          Thomas White
        6. MAPREDUCE-1700.patch
          24 kB
          Thomas White
        7. MAPREDUCE-1700.patch
          25 kB
          Thomas White
        8. MAPREDUCE-1700.patch
          26 kB
          Thomas White
        9. MAPREDUCE-1700.patch
          27 kB
          Thomas White
        10. MAPREDUCE-1700.patch
          16 kB
          Thomas White

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            tomwhite Thomas White
            tomwhite Thomas White
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              Updated:
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