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Posted to github@arrow.apache.org by "paleolimbot (via GitHub)" <gi...@apache.org> on 2023/02/24 20:43:12 UTC

[GitHub] [arrow] paleolimbot commented on issue #34319: [R] v11.0.0.2 extremely slow with parquet files written in v9.0.0

paleolimbot commented on issue #34319:
URL: https://github.com/apache/arrow/issues/34319#issuecomment-1444449432

   It's almost certainly these two lines:
   
   https://github.com/apache/arrow/blob/1c483e4196df3ad51c452ef13ac1ddf844b38193/r/R/parquet.R#L56-L59
   
   It's a little complicated to support both dplyr-like selection and speed here. Perhaps we need a workaround (like `col_select = I(1:200)`) to signal that a user wants to circumvent dplyr syntax sugar here?


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