Github user ericl commented on the issue:
https://github.com/apache/spark/pull/14690
> My main concern is that, the new FileCatalog class hierarchy is really
complex now. Can we simplify it a little? or at least let's put a class
hierarchy chart(or text explanation) in PR description to make other reviewers
easier to understand this new hierarchy.
One low-hanging fruit here is to unify SessionFileCatalog with
PartitionAwareFileCatalog. It seems that after some of the changes here no
longer need them to be separate. This is a PR I can add on after the rebase is
finished.
I also think we should rename some of the classes, but since this would be
an invasive change we can handle it in a follow-up.
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