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  1. Spark
  2. SPARK-2048 Optimizations to CPU usage of external spilling code
  3. SPARK-2574

Avoid allocating new ArrayBuffer in groupByKey's mergeCombiner

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Details

    • Sub-task
    • Status: Resolved
    • Trivial
    • Resolution: Fixed
    • 1.0.0
    • 1.1.0
    • Spark Core
    • None

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          matei Matei Alexandru Zaharia
          sandyr Sandy Ryza
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