[HBASE-2634] Clean up and document locks in HRegion

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Not A Problem
• Component/s: regionserver
• Assignee: Unassigned
• Reporter: Todd Lipcon
• Created: 31/May/10 05:44
• Updated: 11/Jun/22 23:43
• Resolved: 16/Jul/14 22:06

Description

HRegion now has four different lock objects:

• splitsAndClosesLock (RWLock)
• newScannerLock (RWLock)
• updatesLock (RWLock)
• splitLock (Object)

It's not well documented what the purpose of each is, and I imagine we may be able to get rid of at least one.