[HADOOP-17189] add way for s3a to recognise buckets with "." in name and switch to path access

• Type: Sub-task
• Status: Resolved
• Priority: Minor
• Resolution: Won't Fix
• Affects Version/s: 3.3.0
• Fix Version/s: 3.4.0
• Component/s: fs/s3
• Assignee: Unassigned
• Reporter: Steve Loughran
• Created: 06/Aug/20 15:59
• Updated: 03/Aug/21 22:09
• Resolved: 08/Sep/20 10:39

Description

1. AWS has, historically, allowed buckets with '.' in their name (along with other non-DNS valid chars)
2. none of which work with virtual hostname S3 clients -you have to enable path style access
3. which we can't do on a per-bucket basis, as the logic there doesn't support buckets with '.' in the name (think about it...)
4. and we can't blindly say "use path access everywhere", because all buckets created on/after 2020-10-01 won't work that way