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https://issues.apache.org/jira/browse/CRUNCH-118?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias Friedrich resolved CRUNCH-118.
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Resolution: Fixed
Fix Version/s: 0.5.0
Assignee: Josh Wills
OK, done.
> 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
> Assignee: Josh Wills
> Fix For: 0.5.0
>
> Attachments: CRUNCH-118.patch, CRUNCH-118v2.patch, CRUNCH-118v3.patch
>
>
> 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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