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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2023/01/02 21:43:35 UTC

[GitHub] [arrow] JacekPliszka commented on pull request #15159: ARROW-15735: [C++] Hash aggregate functions to return first and last value from a group.

JacekPliszka commented on PR #15159:
URL: https://github.com/apache/arrow/pull/15159#issuecomment-1369229348

   I am surprised by the folding of kernel implementation.  Are compilers so good to optimize it?
   
   Naively it looks like double the computing effort.


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