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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2022/06/17 16:24:27 UTC

[GitHub] [spark] maryannxue commented on pull request #36829: [SPARK-39438][SQL] Add a threshold to not in line CTE

maryannxue commented on PR #36829:
URL: https://github.com/apache/spark/pull/36829#issuecomment-1159037835

   There will definitely be regressions too! It's a tradeoff between double scanning and double shuffling. CTEs not inlined introduce extra shuffles. And it depends on how efficient the scan is implemented.


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