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From "Josh Wills (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CRUNCH-118) Add Aggregator and lib functionality for computing the distinct elements of a PCollection
Date Wed, 21 Nov 2012 17:31:58 GMT
Josh Wills created CRUNCH-118:
---------------------------------

             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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