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https://issues.apache.org/jira/browse/HBASE-28346?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17814944#comment-17814944
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Bryan Beaudreault commented on HBASE-28346:
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Currently, checkQuota exists in RegionServerRpcQuotaManager. I don't think we
should expose that whole class. Instead we can extract the checkQuota methods
into a separate interface which RegionServerRpcQuotaManager implements, and
just expose that interface on the RegionCoprocessorEnvironment.
> Expose checkQuota to Coprocessor Endpoints
> ------------------------------------------
>
> Key: HBASE-28346
> URL: https://issues.apache.org/jira/browse/HBASE-28346
> Project: HBase
> Issue Type: Improvement
> Reporter: Bryan Beaudreault
> Priority: Major
>
> 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.
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