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  1. Spark
  2. SPARK-12795

Whole stage codegen

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    • Epic
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • None
    • 2.0.0
    • SQL
    • None
    • Whole stage codegen

    Description

      Whole stage codegen is used by some modern MPP databases to archive great performance. See http://www.vldb.org/pvldb/vol4/p539-neumann.pdf

      For Spark SQL, we can compile multiple operator into a single Java function to avoid the overhead from materialize rows and Scala iterator.

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            davies Davies Liu
            davies Davies Liu
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