j-esse commented on issue #23556: [SPARK-26626][SQL] Maximum size for repeatedly substituted aliases in SQL expressions URL: https://github.com/apache/spark/pull/23556#issuecomment-455438556 @maropu no I don't think this is related to CleanupAliases - we can't clean up the aliases, because they still need to be used in the expression; we just can't substitute them (if they're large) or we risk OOMing
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