HiveConf defaultHiveConf = new HiveConf();
defaultHiveConf.setVar(ConfVars.METASTOREURIS, "dummyvalue");
// reset to the hive-site.xml values for following param
defaultHiveConf.set("hive.dummyparam.test.server.specific.config.override",
"from.hive-site.xml");
defaultHiveConf.unset("hive.dummyparam.test.server.specific.config.metastoresite");
defaultHiveConf.writeXml(out);
// set the new hive-site.xml
HiveConf.setHiveSiteLocation(hiveSite.toURI().toURL());
}