Hello, we are using Kamon 2.5.12 with Play 2.8.18 and sbt-kanela-runner-play 2.0.14. We are experiencing a weird behavior : our play application makes HTTP calls to a backend. Under certain circumstances, this backend ends up being very slow, so the response time exceeds the configured play timeout (play.server.akka.requestTimeout) of the application. When this happens, the number of active requests increases and never decreases. Other metrics don't reflect this behavior : RAM, number of open connections, active threads, executor queue size, etc... This is the only metric that looks strange.
After having done this analysis, we ended up with two options : either play leaks some active requests or there is a problem with the count done by Kamon.
Best regards
Joël
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