benibus commented on PR #37032: URL: https://github.com/apache/arrow/pull/37032#issuecomment-1669962656
That's probably because selecting a top-level column from a table is just a basic index into a vector, whereas for chunked arrays, you need to process all of the chunks individually to construct a new `ChunkedArray` that represents the child field. Right now, the benchmarks only test top-level selections - but you'd likely see a similar degradation at higher depth levels. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: github-unsubscr...@arrow.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
