Github user jostbg commented on the issue:
https://github.com/apache/activemq-artemis/pull/1772
The NPEs occur that's why I opened this PR. Since they are only logged in
debug level I only saw them while debugging some stomp issue I had.
Throwing an exception is a relatively expensive operation in the JVM
because of the stacktrace information that needs to be generated, so in cases
where it is know that a null value could be returned it one should not rely on
an NPE to be catched.---
