peter-toth commented on PR #59161:
URL: https://github.com/apache/spark/pull/59161#issuecomment-6056714335

   Could you hold this PR for a bit? We've just found and measured a bug on 
master, [SPARK-60084](https://issues.apache.org/jira/browse/SPARK-60084). It's 
the same missing-attribute failure as [finding 
1](https://github.com/apache/spark/pull/59161#discussion_r4187246168), but it 
happens on master without this PR. There a post-join filter folds the reused 
attribute into an `AND`. It's in 4.2.0 already.
   
   It affects this PR, and the fix needs to be backported. So we'll fix it in a 
separate PR first, and this PR should then be rebased onto that. The 
`mergeNamedExpressions` change and [finding 
5](https://github.com/apache/spark/pull/59161#discussion_r4216667479) would 
move to that PR.
   


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