d80tb7 opened a new pull request #24981: [WIP][SPARK-27463][PYTHON] Support Dataframe Cogroup via Pandas UDFs- Arrow Stream Impl URL: https://github.com/apache/spark/pull/24981 Alternative to https://github.com/apache/spark/pull/24965 which uses pure Arrow Streams for data transfer between the executor and the worker. As with the previous PR this is pretty rough and should be viewed as a WIP. The aim at this point is to determine which of the two approaches are better.
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