final Map<String, ComponentConfiguration> compMap = agentConf.getSinkGroupConfigMap();
final Map<String, String> usedSinks = new HashMap<String, String>();
for (final String groupName : sinkgroupNames) {
final ComponentConfiguration comp = compMap.get(groupName);
if (comp != null) {
final SinkGroupConfiguration groupConf = (SinkGroupConfiguration) comp;
final List<String> groupSinkList = groupConf.getSinks();
final List<Sink> groupSinks = new ArrayList<Sink>();
for (final String sink : groupSinkList) {
final Sink s = sinks.remove(sink);
if (s == null) {
final String sinkUser = usedSinks.get(sink);