@Override
protected YarnContainer performBuild() throws Exception {
YarnContainerFactoryBean fb = new YarnContainerFactoryBean();
fb.setContainerRef(ref);
fb.setContainerClass(clazz);
fb.afterPropertiesSet();
YarnContainer container = fb.getObject();
if (container instanceof AbstractYarnContainer) {
((AbstractYarnContainer)container).setConfiguration(configuration);
}
return container;