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  1. Hadoop Map/Reduce
  2. MAPREDUCE-6735

Performance degradation caused by MAPREDUCE-5465 and HADOOP-12107

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Details

    • Bug
    • Status: Open
    • Major
    • Resolution: Unresolved
    • None
    • None
    • None
    • None

    Description

      Two commits, MAPREDUCE-5465 and HADOOP-12107 are making Terasort on YARN 10% slower.

      Reduce phase with those commits ~5 mins
      Reduce phase without ~3.5 mins

      Average Reduce is taking 4mins, 16sec with those commits compared to 3mins, 48sec without.

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          relates to

          Bug - A problem which impairs or prevents the functions of the product. HADOOP-12107 long running apps may have a huge number of StatisticsData instances under FileSystem

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. MAPREDUCE-5465 Tasks are often killed before they exit on their own

          • Major - Major loss of function.
          • Resolved

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              Unassigned Unassigned
              alexbalitsky Alexandr Balitsky
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              Dates

                Created:
                Updated: