cloud-fan edited a comment on issue #25822: [SPARK-29127][SQL] Support partitioning and bucketing through DataFrameWriter.save for V2 Tables URL: https://github.com/apache/spark/pull/25822#issuecomment-532783315 BTW, I also thought about the save mode problem before. If we want to support all save modes, `TableCatalog` can be a good fit. But we need a variant of `TableCatalog` which can 1. translate options to identifier 2. be created by reflection 3. accept user-specified schema when loading table
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