boolean isDispatched(EventID eventId) {
    DispatchedAndCurrentEvents wrapper = getDispatchedAndCurrentEvents(eventId);
    return wrapper == null || eventId.getSequenceID() <= wrapper.lastDispatchedSequenceId;
  }
expiry time for ThreadIdentifiers. In seconds.
geode-core/src/main/java/org/apache/geode/internal/cache/ha/HARegionQueue.java