ulysses-you commented on issue #27096: [SPARK-28148][SQL] Repartition after join is not optimized away URL: https://github.com/apache/spark/pull/27096#issuecomment-573971965 +1, how about add a rule named like `PruneShuffleAndSort`. At least include: 1. ``` // TODO: remove this after we create a physical operator for `RepartitionByExpression`. case operator @ ShuffleExchangeExec(upper: HashPartitioning, child, _) => child.outputPartitioning match { case lower: HashPartitioning if upper.semanticEquals(lower) => child case _ => operator } ``` 2. this pr code 3. [PR-26946](https://github.com/apache/spark/pull/26946)
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