[HBASE-25660] Print split policy in use on Region open (as well as split policy vitals)

• Type: Improvement
• Status: Resolved
• Priority: Trivial
• Resolution: Fixed
• Fix Version/s: 3.0.0-alpha-1, 2.5.0, 2.4.3
• Hadoop Flags: Reviewed
• Assignee: Michael Stack
• Reporter: Michael Stack
• Created: 12/Mar/21 00:49
• Updated: 28/Apr/21 19:29
• Resolved: 15/Mar/21 21:13

Description

On Region open, add to the open message the split and flush policies in place; they are printed no where else. For split policy, list vitals like split size for the Region; for the likes of ConstantSizeSplitPolicy there can be high variance in size so dump out what we've figured.

Issue Links

• links to: GitHub Pull Request #3044