public void scheduleSynchronizeForLostMember(InternalDistributedMember member,
      VersionSource lostVersionID, long delay) {
    getGemFireCache().getCCPTimer().schedule(new SystemTimer.SystemTimerTask() {
      @Override
      public void run2() {
        performSynchronizeForLostMemberTask(member, lostVersionID);
      }
    }, delay);
  }
A reference counter to protected the memoryThresholdReached boolean
geode-core/src/main/java/org/apache/geode/internal/cache/DistributedRegion.java