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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2020/07/02 15:49:01 UTC

[GitHub] [spark] viirya commented on pull request #28954: [SPARK-32083][SQL] Apply CoalesceShufflePartitions when input RDD has 0 partitions with AQE

viirya commented on pull request #28954:
URL: https://github.com/apache/spark/pull/28954#issuecomment-653084800


   When input RDD has 0 partitions, even `CoalesceShufflePartitions` is skipped, why we will launch unnecessary tasks?


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