There are two sorted byte types with DocValues (BYTES_VAR_SORTED,
BYTES_FIXED_SORTED), so you can index this type, but you can't yet
sort by it.
So I added a FieldComparator just like TermOrdValComparator, except it
pulls from the doc values instead.
There are some small diffs, eg with doc values there are never null
|Status||Open [ 1 ]||Resolved [ 5 ]|
|Resolution||Fixed [ 1 ]|
|Status||Resolved [ 5 ]||Closed [ 6 ]|