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  1. Spark
  2. SPARK-11150

Dynamic partition pruning

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    Details

    • Type: New Feature
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 1.5.1, 1.6.0, 2.0.0, 2.1.2, 2.2.1, 2.3.0
    • Fix Version/s: 3.0.0
    • Component/s: SQL
    • Labels:

      Description

      Implements dynamic partition pruning by adding a dynamic-partition-pruning filter if there is a partitioned table and a filter on the dimension table. The filter is then planned using a heuristic approach:

      1. As a broadcast relation if it is a broadcast hash join. The broadcast relation will then be transformed into a reused broadcast exchange by the ReuseExchange rule; or
      2. As a subquery duplicate if the estimated benefit of partition table scan being saved is greater than the estimated cost of the extra scan of the duplicated subquery; otherwise
      3. As a bypassed condition (true).

       Below shows a basic example of DPP.

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            • Assignee:
              maryannxue Wei Xue
              Reporter:
              ynaguib Younes

              Dates

              • Created:
                Updated:
                Resolved:

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