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  1. Pig
  2. PIG-3839 Umbrella jira for Pig on Tez Performance Improvements
  3. PIG-4069

Limit reduce task should start as soon as one map task finishes

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Details

    • Sub-task
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 0.14.0
    • tez
    • None
    • Reviewed

    Description

      Set very low values for ShuffleVertexManager.TEZ_AM_SHUFFLE_VERTEX_MANAGER_MIN_SRC_FRACTION and ShuffleVertexManager.TEZ_AM_SHUFFLE_VERTEX_MANAGER_MAX_SRC_FRACTION in case of LIMIT job not following an order by so that the reduce task starts as soon as 1 map task finishes.

      Attachments

        1. PIG-4069-1.patch
          35 kB
          Rohini Palaniswamy
        2. PIG-4069-2.patch
          34 kB
          Rohini Palaniswamy
        3. PIG-4069-3.patch
          35 kB
          Rohini Palaniswamy
        4. PIG-4069-Tez_0_5_2.patch
          2 kB
          Rohini Palaniswamy

        Issue Links

          depends upon

          Improvement - An improvement or enhancement to an existing feature or task. PIG-4320 Upgrade Tez to 0.5.2

          • Major - Major loss of function.
          • Resolved
          requires

          Bug - A problem which impairs or prevents the functions of the product. TEZ-1590 Fetchers should not report failures after the Processor on the task completes

          • Major - Major loss of function.
          • Closed

          Activity

            People

              rohini Rohini Palaniswamy
              rohini Rohini Palaniswamy
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              Dates

                Created:
                Updated:
                Resolved: