ARROW-12428: [Python] Expose pre_buffer in pyarrow.parquet #10074
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The pre-buffer/Parquet logic has a bug with empty files, which I will need to fix. |
lidavidm
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Thanks @lidavidm ! (I know it goes against the point of an RC, but it would be nice if we could still get this into 4.0 ..) |
lidavidm
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I've rebased this, and tests pass. (Sorry for the long delay here.) |
Co-authored-by: Joris Van den Bossche <jorisvandenbossche@gmail.com>
jorisvandenbossche
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May 4, 2021
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This allows using the new option without going through the datasets API, such as to read a single file. A simple benchmark is in the JIRA. This helps close the gap between PyArrow and fsspec read performance, as fsspec performs readahead by default.