rdblue edited a comment on issue #24401: [SPARK-27504][SQL] File source V2: support refreshing metadata cache URL: https://github.com/apache/spark/pull/24401#issuecomment-499240423 @gengliangwang, this change prevents moving DataSourceV2Relation into Catalyst. I don't think this should have been merged because logical plan nodes, including relations, are immutable and should not expose methods that alter state. See https://issues.apache.org/jira/browse/SPARK-27961.
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