10110346 commented on issue #23695: [SPARK-26780][CORE]Improve shuffle read using ReadAheadInputStream URL: https://github.com/apache/spark/pull/23695#issuecomment-476034817 > > > Does it make sense to see the total execution time? Is it better to compare execution times for each query? This change is mainly effective for shuffle reading, so I don't think there's any essential difference between queries. thanks
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