mgaido91 commented on issue #23802: [SPARK-26893][SQL] Allow partition pruning with subquery filters on file source URL: https://github.com/apache/spark/pull/23802#issuecomment-465129220 > The `HiveShim#convertFilters` doesn't support subquery filter either, so partition pruning can't get the benefit of it. sorry @cloud-fan , maybe I am missing something here, but isn't `HiveShim#convertFilters` only doing pushdown of the filters to the metastore? My understanding is that we would retrieve all the partitions from the metastore but then this whole list is filtered and we read from disk only the relevant partitions. Am I wrong?
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