default void postSetUserQuota(final ObserverContext<MasterCoprocessorEnvironment> ctx,
    final String userName, final GlobalQuotaSettings quotas) throws IOException {
  }
Called after the quota for the user is stored.
@param ctx      the environment to interact with the framework and master
@param userName the name of user
@param quotas   the resulting quota for the user
hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/MasterObserver.java