Assert.assertNotNull(function);
//Check Yarn Functions
function = loader.loadFunction("configure_hadoop_mr2", OsFamily.UNIX);
Assert.assertNotNull(function);
function = loader.loadFunction("install_hadoop_mr2", OsFamily.UNIX);
Assert.assertNotNull(function);
function = loader.loadFunction("start_mr_jobhistory", OsFamily.UNIX);
Assert.assertNotNull(function);
function = loader.loadFunction("start_yarn", OsFamily.UNIX);
Assert.assertNotNull(function);