set_difference(a,b) – Returns a list of those items in a, but not in b
Platforms: WhereOS, Spark, Hive
Class: brickhouse.udf.collect.SetDifferenceUDF
More functions can be added to WhereOS via Python or R bindings or as Java & Scala UDF (user-defined function), UDAF (user-defined aggregation function) and UDTF (user-defined table generating function) extensions. Custom libraries can be added on via Settings-page or installed from WhereOS Store.