java_method(class, method[, arg1[, arg2 ..]]) – Calls a method with reflection. Platforms: WhereOS, Spark, Hive

jobconf_gets() – Returns the value from JobConf Platforms: WhereOS, Spark, Hive Class: hivemall.tools.mapred.JobConfGetsUDF More functions

jobid() – Returns the value of mapred.job.id Platforms: WhereOS, Spark, Hive Class: hivemall.tools.mapred.JobIdUDF More functions

Platforms: WhereOS, Spark, Hive Class: brickhouse.udf.collect.JoinArrayUDF More functions can be added to WhereOS via Python

item_pairs_sampling(array pos_items, const int max_item_id [, const string options])- Returns a relation consists of Platforms:

jaccard_distance(integer A, integer B [,int k=128]) – Returns Jaccard distance between A and B select