[ARROW-12830] [C++][Compute] Make GroupBy optimizations work on Big Endian architecture

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 4.0.0
• Component/s: C++
• External issue URL: https://github.com/apache/arrow/issues/28564
• Assignee: Unassigned
• Reporter: Michal Nowakiewicz
• Created: 19/May/21 23:34
• Updated: 11/Jan/23 08:29

Description

This is related to ARROW-12010, which introduces optimized group by implementation.
On s390x (big endian architecture) the code hangs in unit tests (https://travis-ci.com/github/apache/arrow/jobs/506281680).
Currently this implementation is disabled on big endian and the alternative, earlier, implementation is used instead, but at some point we will stop maintaining both and switch to a single implementation, which requires fixing this issue.

Issue Links

• is a child of: ARROW-12633 [C++] Query engine umbrella issue