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  1. Spark
  2. SPARK-16390 Dataset API improvements
  3. SPARK-16391

KeyValueGroupedDataset.reduceGroups should support partial aggregation

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    • Sub-task
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • None
    • 2.0.1, 2.1.0
    • SQL
    • None

    Description

      KeyValueGroupedDataset.reduceGroups is currently implemented via flatMapGroups, which is very inefficient since effectively does a physical group by.

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            rxin Reynold Xin
            rxin Reynold Xin
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              Created:
              Updated:
              Resolved: