[ARROW-7367] [Python] Use np.full instead of np.array.repeat in ParquetDatasetPiece

• Type: Improvement
• Status: Resolved
• Priority: Trivial
• Resolution: Fixed
• Fix Version/s: 0.16.0
• Component/s: Python
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/23644
• Assignee: Xavier Lacroze
• Reporter: Xavier Lacroze
• Created: 10/Dec/19 18:54
• Updated: 11/Jan/23 07:53
• Resolved: 06/Jan/20 18:46

Description

For small tables (len < 100) execution time is slightly degraded (~ x1.4 at len = 10), for large ones performance gain is huge (exec time ~ x0.04 at len = 100_000)

Issue Links

• links to: GitHub Pull Request #5999