Rich-T-kid commented on PR #9845:
URL: https://github.com/apache/arrow-rs/pull/9845#issuecomment-4338969929

   @alamb pretty small PR with a pretty small performance boost but it should 
close the ticket. I initially just tried your approach of hoisting the call to 
row.Row() outside the loop but it showed very slim/regressed performance. Im 
guessing it was because copying the byte pointer was just as slow/slower as 
calling row.Row() repeatedly which I found pretty suprising.


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