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Posted to jira@arrow.apache.org by "Jacob Wujciak-Jens (Jira)" <ji...@apache.org> on 2022/04/08 12:35:00 UTC

[jira] [Updated] (ARROW-14176) Filename-based partitioning scheme

     [ https://issues.apache.org/jira/browse/ARROW-14176?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jacob Wujciak-Jens updated ARROW-14176:
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    Component/s: Python

> Filename-based partitioning scheme
> ----------------------------------
>
>                 Key: ARROW-14176
>                 URL: https://issues.apache.org/jira/browse/ARROW-14176
>             Project: Apache Arrow
>          Issue Type: Wish
>          Components: Python
>            Reporter: Cédric Hernalsteens
>            Priority: Major
>
> This originates from [this SO question|[https://stackoverflow.com/questions/69379083/read-a-partitioned-parquet-dataset-from-multiple-files-with-pyarrow-and-add-a-pa].]
> The idea is to have a portioning scheme that would allow to construct a primary key from the filename.
> Let's say that one is trying to read `/data-N.parquet` where `N` is an integer. That information should go in a primary key for later reference.
> This is quite similar to have the files laid-out like this : `/N/data.parquet` so I imagine this is technically feasible.



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