[ARROW-4221] [Format] Add canonical flag in COO sparse index

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 1.0.0
• Component/s: Format
• Labels: pull-request-available sparse
• External issue URL: https://github.com/apache/arrow/issues/20801
• Assignee: Kenta Murata
• Reporter: Kenta Murata
• Created: 10/Jan/19 06:25
• Updated: 11/Jan/23 07:32
• Resolved: 12/Jul/20 21:30

Description

To support the integration with scipy.sparse.coo_matrix, it is necessary to add a flag in SparseCOOIndex.  This flag denotes whether elements in COO sparse tensor is sorted lexicographically or not.

Issue Links

• links to: GitHub Pull Request #7477