Nicolas Raga created FLINK-23321:
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Summary: Make REST Netty thread county configurable
Key: FLINK-23321
URL: https://issues.apache.org/jira/browse/FLINK-23321
Project: Flink
Issue Type: Improvement
Components: Runtime / Metrics, Runtime / REST
Reporter: Nicolas Raga
Currently
[rest.server.numThreads|https://ci.apache.org/projects/flink/flink-docs-release-1.13/docs/deployment/config/#rest-server-numthreads]
works to create more DispatcherRestEndpoint threads which help in the purview
of job the dispatcher functionality. However, when used for the REST server for
monitoring of a running job, AbstractRestHandlers actually run on a netty
thread pool we have no control over as seen
[here|https://github.com/apache/flink/blob/master/flink-runtime/src/main/java/org/apache/flink/runtime/rest/RestServerEndpoint.java#L188-L193].
Especially when monitoring unhealthy jobs, we would want to allow creation of
more netty-worker threads that can process incoming connection requests.
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