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  1. Hadoop Map/Reduce
  2. MAPREDUCE-3561 [Umbrella ticket] Performance issues in YARN+MR
  3. MAPREDUCE-3813

RackResolver should maintain a cache to avoid repetitive lookups.

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Details

    • Sub-task
    • Status: Closed
    • Major
    • Resolution: Fixed
    • 0.23.0
    • 0.23.1
    • mrv2, performance
    • None

    Description

      With the current code, during task creation, we repeatedly resolve hosts and RackResolver doesn't cache any of the results. Caching will improve performance.

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        1. MAPREDUCE-3813-20120205.txt
          4 kB
          Vinod Kumar Vavilapalli

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        Sub-task - The sub-task of the issue MAPREDUCE-3524 Scan benchmark is more than 1.5x slower in 0.23

        • Blocker - Blocks development and/or testing work, production could not run
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            vinodkv Vinod Kumar Vavilapalli
            vinodkv Vinod Kumar Vavilapalli
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              Updated:
              Resolved:

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