[HBASE-28346] Expose checkQuota to Coprocessor Endpoints

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.7.0, 3.0.0-beta-2, 2.6.1
• Labels: pull-request-available
• Release Note: For backward compatibility purposes, default, throwing implementations are provided for the new methods for 2.7.0 and 2.6.1. Custom implementation that want to take advantage of the new functionality should override those methods as appropriate.
• Assignee: Charles Connell
• Reporter: Bryan Beaudreault
• Created: 06/Feb/24 18:25
• Updated: 09/Oct/24 07:57
• Resolved: 08/Oct/24 11:01

Description

Coprocessor endpoints may do non-trivial amounts of work, yet quotas do not throttle them. We can't generically apply quotas to coprocessors because we have no information on what a particular endpoint might do. One thing we could do is expose checkQuota to the RegionCoprocessorEnvironment. This way, coprocessor authors have the tools to ensure that quotas cover their implementations.

While adding this, we can update AggregationImplementation to call checkQuota since those endpoints can be quite expensive.

Issue Links

• Dependency: HBASE-28770 Support partial results in AggregateImplementation and AsyncAggregationClient
• links to: GitHub Pull Request #6066
• links to: GitHub Pull Request #6137
• links to: GitHub Pull Request #6138
• links to: GitHub Pull Request #6139
• links to: GitHub Pull Request #6351