carsonwang commented on issue #20303: [SPARK-23128][SQL] A new approach to do adaptive execution in Spark SQL URL: https://github.com/apache/spark/pull/20303#issuecomment-469197856 @fangshil , thanks for the suggestions and feedbacks! When measuring the performance, please also include the patch #19788 which has a big impact on the AE performance. As you suggested, dynamically estimating the initial parallelism will be helpful and it will be much easier for users to use AE. We also did some works about that and can contribute in future PRs.
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