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From viirya <>
Subject [GitHub] spark issue #19301: [SPARK-22084][SQL] Fix performance regression in aggrega...
Date Fri, 22 Sep 2017 09:00:02 GMT
Github user viirya commented on the issue:
    I asked it because by considering subexpressionElimination, you may not actually run it
multiple times. So the benchmark numbers can tell if your fix really improves the performance.


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