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  1. Hadoop Map/Reduce
  2. MAPREDUCE-4425

Speculation + Fetch failures can lead to a hung job

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Details

    • Bug
    • Status: Closed
    • Critical
    • Resolution: Fixed
    • 0.23.1
    • 2.0.3-alpha, 0.23.5
    • mrv2
    • None

    Description

      After a task goes to SUCCEEDED, FAILED/KILLED attempts are ignored.
      1. attemp1 starts
      2. speculative attempt starts
      3. attempt 1 completes - Task moves to SUCCEEDED state
      4. speculative attempt is KILLED
      5. T_ATTEMPT_KILLED is ignored.
      6. attemp1 1 fails with TOO_MANY_FETCH_FAILURES
      The job will effectively hang, since a new task attempt isn't started.

      Attachments

        1. MAPREDUCE-4425.patch
          6 kB
          Jason Darrell Lowe
        2. MAPREDUCE-4425.patch
          6 kB
          Jason Darrell Lowe
        3. MAPREDUCE-4425-branch23.patch
          6 kB
          Jason Darrell Lowe

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          People

            jlowe Jason Darrell Lowe
            sseth Siddharth Seth
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            Dates

              Created:
              Updated:
              Resolved:

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