Memory Leaks: io.vertx.core.impl.DuplicatedContext

Overview:
Memory leaks of io.vertx.core.impl.DuplicatedContext objects were observed when running the check-in-check-out performance longevity test.

Steps to Reproduce:
Run the check-in-check-out test with 20 users for at least 12 hours.

Expected Results:
Little to no memory increased during the test run

Actual Results:
Memory was consumed but no released.

Additional Information:
Heap dump can be provided upon request.

Interested parties:
OleksiiKuzminov abreaux