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https://issues.apache.org/jira/browse/CRUNCH-239?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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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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