Rich-T-kid commented on PR #26973:
URL: https://github.com/apache/datafusion/pull/26973#issuecomment-6742371282

   I followed up on Q28 because it was the only material regression in the 
current hosted ClickBench run.
   
   Four balanced local runs (`main / PR / PR / main`, five iterations each) 
gave a pooled median of 2127.83 ms on main and 2188.88 ms on this PR (+2.9%). 
The paired runs changed direction: the first pair had the PR 12.0% slower, 
while the reverse pair had it 14.3% faster. The earlier hosted run also 
classified Q28 as unchanged.
   
   I do not see a reproducible Q28 regression locally, so I have left the 
page-encoding policy unchanged.
   


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