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Date: Wed, 8 Jan 2014 01:30:50 +0000 (UTC)
From: "Josh Wills (JIRA)" <jira@apache.org>
To: crunch-dev@incubator.apache.org
Message-ID: <JIRA.12658463.1374132450764.58968.1389144650328@arcas>
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Subject: [jira] [Work started] (CRUNCH-239) Add support for unions of PTypes
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     [ https://issues.apache.org/jira/browse/CRUNCH-239?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on CRUNCH-239 started by Josh Wills.

> Add support for unions of PTypes
> --------------------------------
>
>                 Key: CRUNCH-239
>                 URL: https://issues.apache.org/jira/browse/CRUNCH-239
>             Project: Crunch
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Josh Wills
>            Assignee: Josh Wills
>         Attachments: CRUNCH-239.patch
>
>
> There are a few core use cases (e.g., cogroups, as in CRUNCH-174) where it would be useful to construct a union of multiple PTypes into a single PType, where any given observation could only be of one of multiple/optional types.


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