[GitHub] [arrow] lidavidm commented on pull request #9656: ARROW-11772: [C++] Provide reentrant IPC file reader

Wed, 21 Apr 2021 15:02:59 -0700 


lidavidm commented on pull request #9656:
URL: https://github.com/apache/arrow/pull/9656#issuecomment-824387182


   Adding back batch readahead closes most of the gap.
   
   ![S3 Median Scan Time 
(seconds)(3)](https://user-images.githubusercontent.com/327919/115626599-bd203f00-a2cb-11eb-8804-0a59f633720d.png)
   


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