@Override
  public GetClusterIdResponse getClusterId(RpcController controller, GetClusterIdRequest request)
    throws ServiceException {
    return GetClusterIdResponse.newBuilder().setClusterId(server.getClusterId()).build();
  }
Check if an OOME and, if so, abort immediately to avoid creating more objects.
@return True if we OOME'd and are aborting.
hbase-server/src/main/java/org/apache/hadoop/hbase/HBaseRpcServicesBase.java