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From "Fabian Hueske (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (FLINK-1073) SortGroup() does not sort Combiner input
Date Wed, 24 Sep 2014 10:27:34 GMT

     [ https://issues.apache.org/jira/browse/FLINK-1073?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Fabian Hueske resolved FLINK-1073.
----------------------------------
    Resolution: Fixed

Fixed with e5731e0ed7f7294e6f73970fed8315cb572c9cfd

> SortGroup() does not sort Combiner input
> ----------------------------------------
>
>                 Key: FLINK-1073
>                 URL: https://issues.apache.org/jira/browse/FLINK-1073
>             Project: Flink
>          Issue Type: Bug
>          Components: Java API
>    Affects Versions: 0.6.1-incubating, 0.7-incubating
>            Reporter: Fabian Hueske
>            Assignee: Fabian Hueske
>            Priority: Critical
>             Fix For: 0.6.1-incubating, 0.7-incubating
>
>
> Flink supports sorted input for GroupReduce operators by calling for example
> {code}
> myData.groupBy(1).sortGroup(2, Order.ASCENDING).reduceGroup(new MyReducer());
> {code}
> This code will sort the input of the function {{MyReducer.reduce()}} on the third field.
> However, the input of {{MyReducer.combine()}} is not sorted, which is an  unexpected
behavior, IMO.



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