Github user xuanyuanking commented on the issue:
https://github.com/apache/spark/pull/16135
@ericl Thanks for your review.
> Is it sufficient to lock around the catalog.filterPartitions(Nil)?
Yes, this patch port from 1.6.2 and I missed the diff here. Fixed in next
patch.
> Why do we need reader locks?
Write or Invalid the table cache operation fewer than read it. Reader
waiting when there is same table writing cache.
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