@Override
  public synchronized void update(final QuotaState other) {
    super.update(other);

    if (other instanceof UserQuotaState) {
      UserQuotaState uOther = (UserQuotaState) other;
      tableLimiters = updateLimiters(tableLimiters, uOther.tableLimiters);
      namespaceLimiters = updateLimiters(namespaceLimiters, uOther.namespaceLimiters);
      bypassGlobals = uOther.bypassGlobals;
    } else {
      tableLimiters = null;
      namespaceLimiters = null;
      bypassGlobals = false;
    }
  }
Perform an update of the quota state based on the other quota state object. (This operation is
executed by the QuotaCache)
hbase-server/src/main/java/org/apache/hadoop/hbase/quotas/UserQuotaState.java