question: gets a queue by name . concode_field_sep FairScheduler scheduler concode_elem_sep FSParentQueue rootQueue concode_elem_sep Map<String,FSQueue> queues concode_elem_sep String ROOT_QUEUE concode_elem_sep Collection<FSLeafQueue> leafQueues concode_elem_sep Log LOG concode_field_sep FSParentQueue getRootQueue concode_elem_sep FSLeafQueue getLeafQueue concode_elem_sep void updateAllocationConfiguration concode_elem_sep FSParentQueue getParentQueue concode_elem_sep boolean removeLeafQueue concode_elem_sep boolean isEmpty concode_elem_sep boolean removeQueueIfEmpty concode_elem_sep boolean removeEmptyIncompatibleQueues concode_elem_sep Collection<FSQueue> getQueues concode_elem_sep Collection<FSLeafQueue> getLeafQueues concode_elem_sep boolean isQueueNameValid concode_elem_sep void removeQueue concode_elem_sep boolean exists concode_elem_sep FSQueue createQueue concode_elem_sep void initialize concode_elem_sep String ensureRootPrefix
target: FSQueue function ( String arg0 ) { arg0 = ensureRootPrefix ( arg0 ) ; synchronized ( queues ) { return queues . get ( arg0 ) ; } }