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  1. Spark
  2. SPARK-3174

Provide elastic scaling within a Spark application

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Details

    • Improvement
    • Status: Closed
    • Major
    • Resolution: Fixed
    • 1.0.2
    • 1.2.0
    • Spark Core, YARN
    • None

    Description

      A common complaint with Spark in a multi-tenant environment is that applications have a fixed allocation that doesn't grow and shrink with their resource needs. We're blocked on YARN-1197 for dynamically changing the resources within executors, but we can still allocate and discard whole executors.

      It would be useful to have some heuristics that

      • Request more executors when many pending tasks are building up
      • Discard executors when they are idle

      See the latest design doc for more information.

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            andrewor14 Andrew Or
            sandyr Sandy Ryza
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