[GitHub] [spark] srowen commented on pull request #35637: [SPARK-38309][Core] Fix incorrect SHS stage percentile metrics for shuffle read bytes and shuffle total blocks

[GitBox <gi...@apache.org>]

srowen commented on pull request #35637:
URL: https://github.com/apache/spark/pull/35637#issuecomment-1049912279


   Just out of curiosity, can you explain again the idea that negative = negative + negative? why add the same thing to itself? it looks funny but I'm sure there's a reason it works - may be worth a comment


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