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  1. Hadoop Map/Reduce
  2. MAPREDUCE-1304

Add counters for task time spent in GC

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Details

    • New Feature
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 0.21.0
    • task
    • None
    • Reviewed

    Description

      It's easy to grab the number of millis spent in GC (see JvmMetrics for example). Exposing these as task counters would be handy - occasionally I've seen user jobs where long GC pauses cause big "unexplainable" performance problems, and a large counter would make it obvious to the user what's going on.

      Attachments

        1. MAPREDUCE-1304.2.patch
          7 kB
          Aaron Kimball
        2. MAPREDUCE-1304.3.patch
          9 kB
          Aaron Kimball
        3. MAPREDUCE-1304.patch
          7 kB
          Aaron Kimball

        Issue Links

          relates to

          Improvement - An improvement or enhancement to an existing feature or task. MAPREDUCE-901 Move Framework Counters into a TaskMetric structure

          • Major - Major loss of function.
          • Closed

          Activity

            People

              kimballa Aaron Kimball
              tlipcon Todd Lipcon
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              Dates

                Created:
                Updated:
                Resolved: