@Override
  public SetQuotaResponse setQuota(RpcController c, SetQuotaRequest req) throws ServiceException {
    try {
      server.checkInitialized();
      return server.getMasterQuotaManager().setQuota(req);
    } catch (Exception e) {
      throw new ServiceException(e);
    }
  }
Triggers an asynchronous attempt to take a snapshot. {@inheritDoc}
hbase-server/src/main/java/org/apache/hadoop/hbase/master/MasterRpcServices.java