Daryn Sharp created HADOOP-14031:
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Summary: Reduce fair call queue performance impact
Key: HADOOP-14031
URL: https://issues.apache.org/jira/browse/HADOOP-14031
Project: Hadoop Common
Issue Type: Bug
Components: ipc
Affects Versions: 2.7.0
Reporter: Daryn Sharp
Assignee: Daryn Sharp
The fair call queue has performance deficits that create an illusion of
reasonable performance under heavy load. However, there is excessive lock
contention, priority inversion, and pushback/reconnect issues that combine to
create an artificial rate-limiting on the ingress.
The result is server metrics look good, call queue looks low, yet clients
experience dismal latencies.
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