ulysses-you commented on PR #58339:
URL: https://github.com/apache/spark/pull/58339#issuecomment-5518954515

   Rebased onto master in 74bf881 (5 commits, no squash), which brought 
SPARK-59121 into the same file. One real merge in `keysSatisfy`'s 
`OrderedDistribution` branch, where both changes gate it: 
`expressionsDescribeKeys` (a reducer is not order-preserving, so the key order 
says nothing about reduced keys) now composes with the marker's 
single-partition exemption, and both rationales are kept in the comment. The 
rest was imports.
   
   Regression on this head: 304 tests green (`DistributionSuite`, 
`ShuffleSpecSuite`, all `*KeyGroupedPartitioning*` including the two 
runtime-filter subclasses, `GroupPartitionsExecSuite`, 
`EnsureRequirementsSuite`, `ValidateRequirementsSuite`, 
`ProjectedOrderingAndPartitioningSuite`), measured before and after the round's 
changes so the rebase itself is covered too.
   


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