Github user peter-toth commented on the issue:
https://github.com/apache/spark/pull/22817
Thanks @gatorsmile , I thought the issue in SPARK-25816 and in the added UT
is because the top-down. I thought that `UnresolvedExtractValue(child,
fieldExpr) if child.resolved` could be resolved if we give a try to resolve
child first so switched to bottom-up. But I see your point that maybe top-down
is required in other cases.
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