Ray Mattingly created HBASE-29250:
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Summary: Throttles should support a maximum number of concurrently
occupied handler threads
Key: HBASE-29250
URL: https://issues.apache.org/jira/browse/HBASE-29250
Project: HBase
Issue Type: Improvement
Reporter: Ray Mattingly
Similar to https://issues.apache.org/jira/browse/HBASE-29231, we should
consider supporting hard limits for a user's ability to occupy more than _n_
handler threads concurrently.
This poses lots of usability issues compared to TimeBasedLimiters — for
example, what do we return as a wait interval when it's violated? So I'd
recommend that we continue to focus on TimeBasedLimiters as our first line of
defense against pathologic traffic. But I think there's room for a last line of
defense like the one described here.
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