long getDelay() {
    // Wait for in-flight events during gii to be distributed to the member with primary queue.
    long waitTime = 15 * 1000;
    long currentTime = getCurrentTime();
    long elapsed = currentTime - doneGIIQueueingTime;
    return elapsed < waitTime ? waitTime - elapsed : 0L;
  }
expiry time for ThreadIdentifiers. In seconds.
geode-core/src/main/java/org/apache/geode/internal/cache/ha/HARegionQueue.java