LimitedRateGroup[] groups = connection.getRateLimiters( upload );
//do group registration
GroupData[] group_datas = new GroupData[groups.length];
for (int i=0;i<groups.length;i++){
LimitedRateGroup group = groups[i];
// boolean log = group.getName().contains("parg");
GroupData group_data = (GroupData)group_buckets.get( group );
if( group_data == null ) {