uros-db commented on code in PR #46526:
URL: https://github.com/apache/spark/pull/46526#discussion_r1600457296


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sql/core/benchmarks/CollationBenchmark-jdk21-results.txt:
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Review Comment:
   apropos going through lower first, we need to be careful so as not to 
destroy the original data
   
   consider an example of finding the mode in ['a', 'B', 'B', 'A']. Here, 
correct answers would be:
   
   - 'a'
   - 'A'
   - 'B'
   
   but NOT:
   'b'
   
   because that value is not found in the original data



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