Expected behavior

Netty (in this case via reactor-netty) can be used in conjunction with multiple classloaders, allowing classloaders to be properly unloaded if not referenced anymore. (in this case this is important for a gradle plugin)

Actual behavior

When using netty-resolver-dns-native-macos, a classloader and all its classes can not be unloaded even if not referenced anymore as the class io.netty.resolver.dns.macos.DnsResolver is a GC root as a JNI global reference.

This class (and other required classes) are loaded via NETTY_JNI_UTIL_LOAD_CLASS (

Maybe using weak global references instead of global references of the classes is a solution.

Or is there any other solutions how to safely use netty with dynamic classloaders?

Netty version

4.1.94.Final via reactor-netty:1.1.8

JVM version (e.g. java -version)

Any

OS version (e.g. uname -a)

MacOS