[ARROW-14176] [Python] Filename-based partitioning scheme

• Type: Wish
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: Python
• External issue URL: https://github.com/apache/arrow/issues/29763
• Assignee: Unassigned
• Reporter: Cédric Hernalsteens
• Created: 29/Sep/21 19:32
• Updated: 11/Jan/23 08:38

Description

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.

Issue Links

• is related to: ARROW-14612 [C++] Support for filename-based partitioning