Josh Wills created CRUNCH-118:
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Summary: Add Aggregator and lib functionality for computing the
distinct elements of a PCollection
Key: CRUNCH-118
URL: https://issues.apache.org/jira/browse/CRUNCH-118
Project: Crunch
Issue Type: Improvement
Components: MapReduce Patterns
Reporter: Josh Wills
In my continuing effort to add functions that I like from Hive/Pig to Crunch,
I'm proposing a) an Aggregator that behaves like Hive's collect_set() UDAF and
b) an o.a.c.lib.Distinct library for computing the distinct elements of a
PCollection via a groupByKey operation.
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