[HBASE-15511] ClusterStatus should be able to return responses by scope

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

Release Note

Provide a new way to get desired ClusterStatus with a set of ClusterStatus.Option, such that the response back to client can be limited.
Note that, the constructor way to new a ClusterStatus will be no longer support after 2.0.0, and use ClusterStatus.Builder instead.

• Assignee: Reid Chan
• Reporter: Esteban Gutierrez
• Created: 22/Mar/16 00:11
• Updated: 31/Oct/17 20:11
• Resolved: 13/Aug/17 17:14

Description

The current ClusterStatus response returns too much information about the load per region and replication cluster wide. Sometimes that response can be quite large (10s or 100s of MBs) and methods like getServerSize() or getRegionsCount() don't really need the full response. One possibility is to provide a scope (or filter) for the ClusterStatus requests to limit the response back to the client.

Issue Links

• breaks: HBASE-19141 [compat 1-2] getClusterStatus always return empty ClusterStatus
• is related to: HBASE-18609 Apply ClusterStatus#getClusterStatus(EnumSet<Option>) in code base
• relates to: HBASE-18621 Refactor ClusterOptions before applying to code base