* Runs DruidCoordinatorSegmentMerger on a particular set of segments and returns the list of requested merges.
*/
private static List<List<DataSegment>> merge(final Collection<DataSegment> segments)
{
final List<List<DataSegment>> retVal = Lists.newArrayList();
final IndexingServiceClient indexingServiceClient = new IndexingServiceClient(null, null, null)
{
@Override
public void mergeSegments(List<DataSegment> segmentsToMerge)
{
retVal.add(segmentsToMerge);