When installing 4.0.6 just now I was prompted to reconcile some changes in the JVM start options.
UseConcMarkSweepGC
CMSConcurrentMTEnabled
CMSClassUnloadingEnabled
All 3 of these options were removed. @aaronsachs or anyone else can you link me to the documentation for this change? I tried looking through the change log but probably through my own fault wasn’t able to find it.
Ok, I will. The last one appears to not be relevant in current java versions, so maybe that’s the case for the other two as well.
Worth pointing out that basically everyone (ideally) will get prompted for both the jvm option changes and the log4j2 config changes, since anyone using HTTPS will have (or should have) modified the JVM startup options for their cert, and the Kafka logging options changed in the log4j2 config.