DispatchedAndCurrentEvents getDispatchedAndCurrentEvents(EventID eventId) {
    ThreadIdentifier tid = getThreadIdentifier(eventId);
    return (DispatchedAndCurrentEvents) eventsMap.get(tid);
  }
expiry time for ThreadIdentifiers. In seconds.
geode-core/src/main/java/org/apache/geode/internal/cache/ha/HARegionQueue.java