[ARROW-18397] [C++] Clear S3 region resolver client at S3 shutdown

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 10.0.2, 11.0.0
• Component/s: C++
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/33561
• Assignee: Antoine Pitrou
• Reporter: Antoine Pitrou
• Created: 23/Nov/22 15:57
• Updated: 11/Jan/23 11:59
• Resolved: 23/Nov/22 19:53

Description

The S3 region resolver caches a S3 client at module scope. This client can be destroyed very late and trigger an assertion error in the AWS SDK because it was already shutdown:
https://github.com/aws/aws-sdk-cpp/issues/2204

When explicitly finalizing S3, we should ensure we also destroy the cached S3 client.

Issue Links

• links to: GitHub Pull Request #14718