* @return the {@link MapReduceConfiguration}
*/
protected MapReduceConfiguration getMapReduceConfiguration(String classPath) {
if (!mapReduceConfigs.containsKey(classPath)) {
try {
MapReduceConfiguration config = MapReduceConfiguration.create(
getClass().getResourceAsStream(classPath));
mapReduceConfigs.put(classPath, config);
} catch(Exception e) {
throw new RuntimeException(e);
}