Jboss consuming 100% CPU on HashMap.get()

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Issue

Today one of our Jboss cluster nodes started consuming a lot of CPU. After inspecting the running JVM, we found http threads that appeared to be stuck on a 'HashMap.get()' method invocation.

Environment

We're running HQ 4.2.0-EE. The Agent is: agent-4.2.0.7-EE-1285.

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