[HBASE-2459] Use finer-grain locking in HConnectionManager

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Won't Fix
• Component/s: Client
• Assignee: Unassigned
• Reporter: Jonathan Gray
• Created: 16/Apr/10 18:14
• Updated: 11/Jun/22 23:32
• Resolved: 26/Jan/14 22:07

Description

Currently we synchronize within HConnectionManager.locateRegionInMeta() when looking up the cached location (and querying meta if not cached). We use the same lock for every user-space region.

We really only need per-region synchronization here.