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  1. Hadoop Map/Reduce
  2. MAPREDUCE-2787

MR-279: Performance improvement in running Uber MapTasks

    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Won't Fix
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: mrv2
    • Labels:
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      Description

      The runUberMapTasks() in org.apache.hadoop.mapred.UberTask obtains the local fileSystem and local job configuration for every task attempt. This will have a negative performance impact.

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            • Assignee:
              ahmed.radwan Ahmed Radwan
              Reporter:
              ahmed.radwan Ahmed Radwan
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              • Created:
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