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  1. Spark
  2. SPARK-7956

Use Janino to compile SQL expression

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Details

    • Bug
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • None
    • 1.5.0
    • SQL
    • None

    Description

      The overhead of current implementation of codegen is to high (50ms - 500ms), which blocks us from turning it on by default.

      We should try to investigate using Janino to compile the SQL expressions into JVM bytecode, which should be much faster to compile (about 10ms).

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              davies Davies Liu
              davies Davies Liu
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