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  1. Apache Tez
  2. TEZ-3934

LegacySpeculator sometime issues wrong number of speculative attempts

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Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 0.9.2, 0.10.0
    • None
    • None

    Description

      Attaching a log from TestSpeculation that shows two speculative events launched instead of just a single one. I have seen this in practice and not just in tests.

      Attachments

        1. TestSpeculation-output.txt
          45 kB
          Jonathan Turner Eagles
        2. TEZ-3934.001.patch
          3 kB
          Nishant Dash
        3. TEZ-3934.002.patch
          3 kB
          Nishant Dash
        4. TEZ-3934.003.patch
          3 kB
          Nishant Dash
        5. TEZ-3934.003.patch
          3 kB
          Nishant Dash

        Issue Links

          Blocked

          Bug - A problem which impairs or prevents the functions of the product. TEZ-3956 testTaskSchedulerPreemption test fails intermittently

          • Major - Major loss of function.
          • Open
          blocks

          Bug - A problem which impairs or prevents the functions of the product. TEZ-3941 Reduce CPU needed for LegacySpeculator#speculationValue

          • Major - Major loss of function.
          • Open
          is superceded by

          Improvement - An improvement or enhancement to an existing feature or task. TEZ-4067 Tez Speculation decision is calculated on each update by the dispatcher

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Activity

            People

              nishantdash Nishant Dash
              jeagles Jonathan Turner Eagles
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              Dates

                Created:
                Updated:
                Resolved: