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  1. Hadoop Map/Reduce
  2. MAPREDUCE-1685

Debug statements affecting performance of JobTracker.heartbeat

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Details

    • Bug
    • Status: Resolved
    • Major
    • Resolution: Duplicate
    • 0.20.1
    • 0.22.0
    • None
    • None

    Description

      Several debug statements that come in the critical section in JobTracker.heartbeat() are not protected by a LOG.isDebugEnabled() and so incur non-trivial costs, in the order of 15% of the total heartbeat processing time.

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            Unassigned Unassigned
            vinodkv Vinod Kumar Vavilapalli
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