ulysses-you commented on PR #58339:
URL: https://github.com/apache/spark/pull/58339#issuecomment-5548763148

   Thank you @cloud-fan for the re-review. The two nits are fixed in 
3c6b0143308 (comment wording and the `iterator` in the identity check).
   
   On **Recheck distributions after applying partition grouping**: agreed it 
should close, and I filed 
[SPARK-59272](https://issues.apache.org/jira/browse/SPARK-59272) as a 
standalone follow-up rather than folding a partial fix into this PR. The 
reasoning is in the [existing 
thread](https://github.com/apache/spark/pull/58339#discussion_r3939155993): a 
per-side `satisfies` recheck is not viable - partial clustering deliberately 
leaves the rebuilt children ungrouped yet value-aligned, so such a gate rejects 
that whole family. The fix needs a pairwise check on whether the two rebuilt 
children still declare the same aligned key sequence (the `alignToExpectedKeys` 
guarantee), reconciled with `ValidateRequirements`.


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