Message11418

Given that we bundle Guava anyway, maybe the solution is as easy as changing sysClosers to be

new com.google.common.collect.MapMaker().weakKeys().makeMap()

In the doc they don't explicitly specify that such a map would automatically tidy up cleared keys, but they advertise it as a sutiable replacement for java.util.WeakHashMap. WeakHashMap doc explicitly states that it is self-cleaning, so I suppose this implies the Guava-version s either.

I will give it a try if I can reproduce this issue (didn't check out the code yet).