Benjamin Mahler created MESOS-8345:
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Summary: Improve master responsiveness while serving state
information.
Key: MESOS-8345
URL: https://issues.apache.org/jira/browse/MESOS-8345
Project: Mesos
Issue Type: Epic
Components: HTTP API, master
Reporter: Benjamin Mahler
Currently when state is requested from the master, the response is built using
the master actor. This means that when the master is building an expensive
state response, the master is locked and cannot process other events. Previous
performance improvements to JSON generation (MESOS-4235) alleviated this issue,
but for large cluster with a lot of clients this can still be a problem.
It's possible to serve state outside of the master actor by streaming the state
(re-using the existing streaming operator API) into another actor(s) and
serving from there.
NOTE: I believe this approach will incur a small performance cost during master
failover, since the master has to perform an additional copy of state that it
fans out.
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