Revision f96fc06ca4a5a1bbc154aca1c7a9b96e7fc42c7e authored by Peter Toth on 17 August 2022, 06:57:35 UTC, committed by Wenchen Fan on 17 August 2022, 06:58:18 UTC
### What changes were proposed in this pull request? Do not exclude `Union`'s first child attributes when traversing other children in `RemoveRedundantAliases`. ### Why are the changes needed? We don't need to exclude those attributes that `Union` inherits from its first child. See discussion here: https://github.com/apache/spark/pull/37496#discussion_r944509115 ### Does this PR introduce _any_ user-facing change? No. ### How was this patch tested? Existing UTs. Closes #37534 from peter-toth/SPARK-39887-keep-attributes-of-unions-first-child-follow-up. Authored-by: Peter Toth <ptoth@cloudera.com> Signed-off-by: Wenchen Fan <wenchen@databricks.com> (cherry picked from commit e732232dac420826af269d8cf5efacb52933f59a) Signed-off-by: Wenchen Fan <wenchen@databricks.com>
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