Hi, I'm deploying 4.9.2.0 (not the vanilla version, but rather an upgraded version of our fork) on Tomcat 8. Management server startup fails with the following error:
java.lang.IncompatibleClassChangeError: Found interface com.google.common.base.Equivalence, but class was expected I've traced this down to the OutOfBandServiceManagerImpl. More specifically, when it tries to build the hostAlertCache using Guava's CacheBuilder. Deep in Guava, it's calling an "identity()" method on the Equivalence class. All of the Guava classes are coming from guava-19.0 except for com/google/common/base/Equivalence.class. The Equivalence class is being loaded from the midonet jar for some reason, and that version does not have the method needed. Thus, the error. This is because Tomcat apparently does not load jars in alphabetical order anymore, starting with version 8. An open ticket for them to fix this is here: https://bz.apache.org/bugzilla/show_bug.cgi?id=57129 It could be possible to "fix" this by using a custom ClassLoader to force Tomcat to load things alphabetically (testing that right now--and not really succeeding), but the proper fix is to have the midonet client not be packaging guava with itself. Does anyone know why this is? Jeff
