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From "Amit Sela (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (BEAM-1815) Avoid shuffling twice in GABW
Date Tue, 28 Mar 2017 13:48:41 GMT

     [ https://issues.apache.org/jira/browse/BEAM-1815?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Amit Sela resolved BEAM-1815.
-----------------------------
       Resolution: Fixed
    Fix Version/s: First stable release

> Avoid shuffling twice in GABW
> -----------------------------
>
>                 Key: BEAM-1815
>                 URL: https://issues.apache.org/jira/browse/BEAM-1815
>             Project: Beam
>          Issue Type: Bug
>          Components: runner-spark
>            Reporter: Amit Sela
>            Assignee: Amit Sela
>             Fix For: First stable release
>
>
> Spark runner implementation of GABW includes a "built-in" groupByKey, but BOBK before
it already groups, so in order to avoid an unnecessary shuffle we need to force a {{Partitioner}}
on the RDDs involved. 



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