[ARROW-16048] [Python] Null buffers with Pickle protocol

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 8.0.0
• Component/s: Python
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/31467
• Assignee: Antoine Pitrou
• Reporter: Micah Kornfield
• Created: 28/Mar/22 16:29
• Updated: 11/Jan/23 11:41
• Resolved: 21/Apr/22 09:13

Description

When underlying buffers are null they populate the buffer protocol ".buf" value with a null value.  In some cases this can violate contracts asserted in cpython.  It might be best to always return an empty non-null buffer when the underlying buffer is null.

Issue Links

• links to: GitHub Pull Request #12752