public final List<String> getContextLocations() {
Properties properties = getProperties();
List<PropertySource> propertySources = getPropertySources(properties);
PrefixedCompositePropertySource compositePropertySource = new PrefixedCompositePropertySource("impala.", propertySources);
final ConfigurationSettings configSettings = new ConfigurationSettings();
delegate.addContextLocations(configSettings, compositePropertySource);
logger.info(configSettings);