Github user rdblue commented on the issue:
https://github.com/apache/spark/pull/21308
@tigerquoll, there is currently no support to expose partitions through the
v2 API. That would be a different operation. If you wanted to implement
partition operations through this API, then you would need to follow the
guarantees specified here: if you need to delete by partition, then the
expression must match records at partition boundaries and reject the delete
operation otherwise.
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