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  1. Spark
  2. SPARK-6116 DataFrame API improvement umbrella ticket (Spark 1.5)
  3. SPARK-8300

DataFrame hint for broadcast join

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Details

    • Sub-task
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • None
    • 1.5.0
    • SQL
    • None
    • Spark 1.5 doc/QA sprint

    Description

      It is not always possible to have perfect cardinality estimation. We should allow users to give hint to the optimizer to do broadcast join.

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            rxin Reynold Xin
            rxin Reynold Xin
            Michael Armbrust Michael Armbrust
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            Dates

              Created:
              Updated:
              Resolved:

              Agile

                Active Sprint:
                Spark 1.5 doc/QA sprint ends 28/Aug/15
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