COLLECT_SET() in Hive, keep duplicates?

Is there a way to keep the duplicates in a collected set in Hive, or simulate the sort of aggregate collection that Hive provides using some other method? I want to aggregate all of the items in a column that have the same key into an array, with duplicates.

I.E.:

hash_id | num_of_cats
=====================
ad3jkfk            4
ad3jkfk            4
ad3jkfk            2
fkjh43f            1
fkjh43f            8
fkjh43f            8
rjkhd93            7
rjkhd93            4
rjkhd93            7

should return:

hash_agg | cats_aggregate
===========================
ad3jkfk   Array<int>(4,4,2)
fkjh43f   Array<int>(1,8,8)
rjkhd93   Array<int>(7,4,7)