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  1. Pig
  2. PIG-480

PERFORMANCE: Use identity mapper in a chain of M-R jobs

    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Won't Fix
    • Affects Version/s: 0.2.0
    • Fix Version/s: None
    • Component/s: None
    • Labels:
      None

      Description

      For jobs with two or more MR jobs, use identity mapper wherever possible in second and subsequent MR jobs. Identity mapper is about 50% than pig empty map job because it doesn't parse the data.

        Attachments

        1. PIG_480.patch
          69 kB
          Ying He
        2. PIG_480.patch
          62 kB
          Ying He
        3. PIG_480.patch
          62 kB
          Ying He

          Activity

            People

            • Assignee:
              Unassigned
              Reporter:
              olgan Olga Natkovich
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              Dates

              • Created:
                Updated:
                Resolved: