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Posted to dev@crunch.apache.org by "Josh Wills (JIRA)" <ji...@apache.org> on 2014/04/15 07:42:15 UTC

[jira] [Updated] (CRUNCH-376) Add aggregate(...) function to PCollection

     [ https://issues.apache.org/jira/browse/CRUNCH-376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Josh Wills updated CRUNCH-376:
------------------------------

    Attachment: CRUNCH-376b.patch

Put this into patch form-- [~jgmath2000], one concern: the result of an Aggregator call isn't necessarily a single value (e.g., a TOP_N aggregation). I'm trying to think of a clean way to represent both the single-valued and multi-valued aggregations.

> Add aggregate(...) function to PCollection
> ------------------------------------------
>
>                 Key: CRUNCH-376
>                 URL: https://issues.apache.org/jira/browse/CRUNCH-376
>             Project: Crunch
>          Issue Type: New Feature
>          Components: Core
>            Reporter: Jason Gauci
>            Assignee: Josh Wills
>            Priority: Minor
>         Attachments: CRUNCH-376b.patch
>
>
> This patch adds an aggregate() function to PCollection so you can do things like sum a collection of integers in one line.
> https://github.com/MisterTea/crunch/commit/4bd8b7a13b893ddb89c11d657ba5347b92fe5a88



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