Github user gatorsmile commented on the pull request:
https://github.com/apache/spark/pull/11298#issuecomment-187009069
cc @davies @cloud-fan . This PR is like an incremental patch with few lines
of code changes. I am not sure if the whole rewrite is worthy for resolving the
above two issues only when there exist the other operators between `Sort` and
`Aggregate`? After all, users can manually correct their query if they hit a
resolution issue when missing attributes in Sort happen. We already cover most
of cases. : )
Let me know if you want a whole rewrite or just an incremental fix. Thanks!
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