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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

    • Improvement
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • 2.3.0, 2.3.1, 2.3.2, 2.4.0
    • 2.3.3, 2.4.1, 3.0.0
    • SQL
    • None

    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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          is duplicated by

          Improvement - An improvement or enhancement to an existing feature or task. SPARK-26155 Spark SQL performance degradation after apply SPARK-21052 with Q19 of TPC-DS in 3TB scale

          • Major - Major loss of function.
          • Resolved
          relates to

          Sub-task - The sub-task of the issue SPARK-21052 Add hash map metrics to join

          • Major - Major loss of function.
          • Resolved
          links to

          Pull request #23269 [Github] Pull Request #23269 (JkSelf)

          Pull request #23318 [Github] Pull Request #23318 (JkSelf)

          Web Link GitHub Pull Request #23269

          Web Link GitHub Pull Request #23318

          Web Link GitHub Pull Request #23319

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            People

              Jk_Self Ke Jia
              Jk_Self Ke Jia
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              Dates

                Created:
                Updated:
                Resolved: