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  1. Spark
  2. SPARK-13873

Avoid the copy in whole stage codegen when there is no joins

    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 2.0.0
    • Component/s: SQL
    • Labels:
      None

      Description

      When we generate code for join, we copy the output row, because there could be multiple output row from single input row.

      We could avoid this copy when there is no join, or the join will not generate multiple output rows from single input row.

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            • Assignee:
              davies Davies Liu
              Reporter:
              davies Davies Liu
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                Updated:
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