Spring-boot-admin: What does the /api/journal?stream Warning mean?

[Hublo22]

It seems that we successfuly configured _spring-boot-admin_ application. It's running within a Docker Container and can correctly communicate with a _spring-cloud-netflix_ server (also itself installed in a Docker Container).

However, we do see the following WARNING in the logs:

`2016-12-28 08:46:27.954 WARN 7 --- [qtp66231846-19] org.eclipse.jetty.server.HttpChannel : //serviceName:portNumber/api/journal?stream

java.lang.IllegalStateException: cannot reset buffer on committed response
at org.eclipse.jetty.server.Response.resetBuffer(Response.java:1245)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:371)
at org.eclipse.jetty.server.HttpChannel.run(HttpChannel.java:266)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)
at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)
at java.lang.Thread.run(Unknown Source)`

We see this warning every ~30sec ...

What does it mean? Something to be worried about?

I'm not 100% which configuration information is relevant for this question, please just ask for any parameter you need to know.

[joshiste]

The ui does some long polling on this endpoint. The default timeout is 30s for the async request. After the timeout the ui does a reconnect. So you don't need to worry about this. You can try to set spring.mvc.async.request-timeout=-1 and see if the message disappears.

[Hublo22]

Thanks for the quick answer. I added this parameter, seem to do the trick. cheers!