ClassLocal prevents Chronicle from unloading from classloader

[alamar]

If a mapping of Java lang type -> Chronicle object is put to ClassLocal retained in a static field, such as java.lang.Integer -> SerializationStrategies#ANY_SCALAR, then Chronicle classes may not be unloaded from ClassLoader and ClassLoader will never be reclaimed by GC.

See https://bugs.openjdk.java.net/browse/JDK-8136353

[peter-lawrey]

ClassLocal is a Chronicle class so while it is used for anything, it will prevent core from being unloaded.

[alamar]

The user may expect that our libraries may unload when no longer needed, when in fact this won't happen.

[alamar]

Was it fixed @yevgenp ?

[yevgenp]

@alamar Peter's comment implies it's by design.