alamb commented on PR #8257:
URL: https://github.com/apache/arrow-rs/pull/8257#issuecomment-3297735001
> I agree. I’ve been thinking more about this, especially since my focus is
primarily on cuDF rather than DataFusion.
>
> At a high level, it’s a trade-off between computation (specifically
decompression) and I/O (file size reduction). In CPU scenarios like datafusion,
I believe reading compressed Parquet files tends to be computation-bound
Yes I 100% agree with this conclusion -- and I think allowing users to have
more control over this tradeoff via a tuning knob would make a lot of sense.
I filed a ticket to try and capture the discussion
- https://github.com/apache/arrow-rs/issues/8358
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