rahij opened a new pull request #29309:
URL: https://github.com/apache/spark/pull/29309
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### What changes were proposed in this pull request?
This PR adds support for satisfying HashClusteredDistribution by
DataSourceV2 implementations.
### Why are the changes needed?
Currently, the DataSourcePartitioning class only allows satisfying
ClusteredDistribution. However, we need to satisfy HashClusteredDistribution as
well for operators like SortMergeJoinExec.
### Does this PR introduce _any_ user-facing change?
Yes, this lets DSV2 users implement their own Partitioning to satisfy
HashClusteredDistribution. It is a change in the public facing API.
### How was this patch tested?
Unit tests.
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