lhotari opened a new pull request #14353:
URL: https://github.com/apache/pulsar/pull/14353
THIS IS A DRAFT. Extension to current PIP-142 related changes in #14320 .
### Motivation
The current Jetty configuration doesn't properly handle backpressure. This
is explained in the changes made below.
### Modifications
- make the queue for Jetty's thread pool's bounded and configured with
`httpServerThreadPoolQueueSize` setting
- the default is unlimited and doesn't cause backpressure which is desired
when the queue grows
- Add `maxHttpServerConnections` setting which limits the number of TCP/IP
connections.
- use `maxConcurrentHttpRequests` to configure Jetty's
[QoSFilter](https://www.eclipse.org/jetty/javadoc/jetty-9/org/eclipse/jetty/servlets/QoSFilter.html)
- Currently `maxConcurrentHttpRequests` is used to configure accept queue
size. This doesn't limit concurrent http requests.
- Add separate setting `httpServerAcceptQueueSize` to configure the accept
queue size
- similar proxy changes TBD
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