[HBASE-4087] HBaseAdmin should perform validation of connection it holds

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 0.92.0
• Hadoop Flags: Reviewed
• Assignee: Ted Yu
• Reporter: Ted Yu
• Created: 12/Jul/11 16:10
• Updated: 20/Nov/15 11:54
• Resolved: 16/Jul/11 02:40

Description

Through HBASE-3777, HConnectionManager reuses the connection to HBase servers.
One challenge, discovered in troubleshooting HBASE-4052, is how we invalidate connection(s) to server which gets restarted.
There're at least two ways.
1. HConnectionManager utilizes background thread(s) to periodically perform validation of connections in HBASE_INSTANCES and remove stale connection(s).
2. Allow HBaseClient (including HBaseAdmin) to provide feedback to HConnectionManager.

The solution can be a combination of both of the above.