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  1. Hadoop Map/Reduce
  2. MAPREDUCE-1684

ClusterStatus can be cached in CapacityTaskScheduler.assignTasks()

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Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Fixed
    • 1.0.2
    • 1.2.0
    • capacity-sched
    • None

    Description

      Currently, CapacityTaskScheduler.assignTasks() calls getClusterStatus() thrice: once in assignTasks(), once in MapTaskScheduler and once in ReduceTaskScheduler. It can be cached in assignTasks() and re-used.

      Attachments

        1. mapreduce-1684-v1.0.2-1.patch
          5 kB
          Koji Noguchi

        Issue Links

          relates to

          Improvement - An improvement or enhancement to an existing feature or task. MAPREDUCE-4499 Looking for speculative tasks is very expensive in 1.x

          • Major - Major loss of function.
          • Closed

          Activity

            People

              knoguchi Koji Noguchi
              amareshwari Amareshwari Sriramadasu
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              Dates

                Created:
                Updated:
                Resolved: