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  1. Spark
  2. SPARK-26316

Because of the perf degradation in TPC-DS, we currently partial revert SPARK-21052:Add hash map metrics to join,

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    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.3.0, 2.3.1, 2.3.2, 2.4.0
    • Fix Version/s: 2.3.3, 2.4.1, 3.0.0
    • Component/s: SQL
    • Labels:
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      Description

      The code of  L486 and L487 in  SPARK-21052 cause performance degradation in spark2.3. The result of  all queries in TPC-DS with 1TB is in TPC-DS result

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              • Assignee:
                Jk_Self Ke Jia
                Reporter:
                Jk_Self Ke Jia
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                • Created:
                  Updated:
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