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  1. Hadoop Common
  2. HADOOP-4688

multiple spills/reducers test case for mergeParts() needed

    Details

    • Type: Test
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 0.19.1
    • Fix Version/s: 0.20.0
    • Component/s: None
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      The first patch version (incorrect) for http://issues.apache.org/jira/browse/HADOOP-4614 exposed a problem that existing tests do not exercise some code paths of MapOutputBuffer::mergeParts(). In particular, we need a test that would validate output when numSpills >1 and partitions >1.

      This might be a test that has more than 1 reducer and forces multiple first level (map) spills by setting io.sort.mb (and possibly io.sort.spill.percent) to small values.

        Attachments

        1. 4688-0.patch
          2 kB
          Chris Douglas

          Activity

            People

            • Assignee:
              chris.douglas Chris Douglas
              Reporter:
              yurip Yuri Pradkin
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              Dates

              • Created:
                Updated:
                Resolved: