[ARROW-12727] [C++][Compute] GroupBy: support more than 2^32 groups

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 4.0.0
• Component/s: C++
• Labels: query-engine
• External issue URL: https://github.com/apache/arrow/issues/28469
• Assignee: Unassigned
• Reporter: Michal Nowakiewicz
• Created: 10/May/21 18:09
• Updated: 11/Jan/23 08:28

Description

Support:
a) 64-bit hash,
b) 64-bit group id and
c) 64-bit hash table key offsets
in hash group by.

Issue Links

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