protected String getHeader() {
return String.format("[%d][%s]: ",
isIterative ? getIterationRuntimeContext().getSuperstepNumber() : 0,
prefix != null && !prefix.isEmpty() ? prefix : " ");
}
<BUG>private Map<GradoopId, PropertyValue> initMapping(

List<Tuple2<GradoopId, PropertyValue>> tuples) {

Map<GradoopId, PropertyValue> map = Maps.newHashMap();

for (Tuple2<GradoopId, PropertyValue> tuple : tuples) {
</BUG>
map.put(tuple.f0, tuple.f1);

protected String getHeader() {
return String.format("[%d][%s]: ",
isIterative ? getIterationRuntimeContext().getSuperstepNumber() : 0,
prefix != null && !prefix.isEmpty() ? prefix : " ");
