in simplestore/src/main/java/com/uber/simplestore/impl/SimpleStoreFactory.java [115:123]
public static void crashIfAnyOpen() {
synchronized (namespacesLock) {
for (Map.Entry<String, SimpleStoreImpl> e : namespaces.entrySet()) {
if (e.getValue().available.get() == 0) {
throw new IllegalStateException("Leaked namespace " + e.getKey());
}
}
}
}