[jetty-users] jetty 11 blocking http client timeout handling broken

[Matthias Pfau <matthias.pfau@xxxxxxxx>]

Hi there,
after upgrading to jetty 11, we noted that our qtp threadpool started to grow over time. We found that we had an invocation of blocking org.eclipse.jetty.client.HttpRequest#send in one of our handlers.

The code has been lately changed to not use a timed get and the existing timeout handling does not seem to work as expected.

Our code was basically this:

var response = client.newRequest(url)
  .method(method)
  .timeout(TIMEOUT, TimeUnit.SECONDS)
  .send();

Stacks of the same thread at different times proof that the timeout was somehow not respected. See https://gist.github.com/mpfau/dc7adc7074108ff085e44634dc0cf86f.

In the end, we had around 200 Threads that were all stuck at the same place.

We switched to async #send now. I guess this will solve the problem in our case.
Best,
Matthias