HyukjinKwon commented on issue #23760: [SPARK-26762][SQL][R] Arrow optimization for conversion from Spark DataFrame to R DataFrame URL: https://github.com/apache/spark/pull/23760#issuecomment-463061332 re: https://github.com/apache/spark/pull/23760#issuecomment-463012213 Thing is, nowadays SparkR doesn't have RDD APIs and in the transition to be removed out completely. Maybe I can try to test with `dapply` but I think it's difficult to get the partition index. Should be okay since the codes were restored from the previous codes almost as are.
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