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Posted to dev@arrow.apache.org by "Joris Van den Bossche (JIRA)" <ji...@apache.org> on 2019/05/29 10:09:00 UTC

[jira] [Created] (ARROW-5436) [Python] expose filters argument in parquet.read_table

Joris Van den Bossche created ARROW-5436:
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             Summary: [Python] expose filters argument in parquet.read_table
                 Key: ARROW-5436
                 URL: https://issues.apache.org/jira/browse/ARROW-5436
             Project: Apache Arrow
          Issue Type: Improvement
          Components: Python
            Reporter: Joris Van den Bossche
             Fix For: 0.14.0


Currently, the {{parquet.read_table}} function can be used both for reading a single file (interface to ParquetFile) as a directory (interface to ParquetDataset). 

ParquetDataset has some extra keywords such as {{filters}} that would be nice to expose through {{read_table}} as well.

Of course one can always use {{ParquetDataset}} if you need its power, but for pandas wrapping pyarrow it is easier to be able to pass through keywords just to {{parquet.read_table}} instead of calling either {{read_table}} or {{ParquetDataset}}. Context: https://github.com/pandas-dev/pandas/issues/26551



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