[HBASE-12559] Provide LoadBalancer with online configuration capability

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.0.0
• Hadoop Flags: Reviewed

Release Note

updateConfiguration(ServerName server) method of Admin now updates config for HMaster as well.
Specifically, config update would be taken by load balancer.

• Assignee: Ted Yu
• Reporter: Ted Yu
• Created: 22/Nov/14 00:22
• Updated: 17/Jun/22 18:36
• Resolved: 02/Dec/14 00:30

Description

StochasticLoadBalancer has many knobs which user can adjust.
It would increase productivity by allowing StochasticLoadBalancer to accept online configuration changes.

LoadBalancer already implements setConf(Configuration) method which reloads relevant configuration parameters.
We need to add updateMasterConfiguration() method to Admin which invokes the setConf() method.

Issue Links

• relates to: HBASE-19416 Document dynamic configurations currently support