[ARROW-14003] [C++][Python] Not providing a sort_key in the "select_k_unstable" kernel crashes

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 6.0.0
• Component/s: C++, Python
• Labels: kernel pull-request-available query-engine
• External issue URL: https://github.com/apache/arrow/issues/29603
• Assignee: Alexander Ocsa
• Reporter: Joris Van den Bossche
• Created: 15/Sep/21 13:55
• Updated: 11/Jan/23 08:36
• Resolved: 17/Sep/21 15:49

Description

The new kernel added in ARROW-1565 crashes in Python if you don't specify a sort_key:

In [1]: import pyarrow.compute as pc

In [2]: arr = pa.array([1, 2, 3, 4])

In [3]: pc.select_k_unstable(arr, k=2)
Segmentation fault (core dumped)

cc aocsa

Issue Links

• links to: GitHub Pull Request #11164