When I shutdown CentOS, it doesn't wait for complete shutdown of WildFly. I see that server.log doesn't end with `JBAS015950: WildFly 8.2.0.Final "Tweek" stopped in 437ms` at shutdown of CentOS. also there's no message which indicates that processing of WildFly shutdown (e.g. Stopping wildfly...). it seems like that shutdown script was not invoked and CentOS killed the process of WildFly.

It's not good for embedded database that requires shutdown properly. I have a embedded Derby within WildFly and it needs properly shutdown for every time to avoid data corruption.