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From Gábor Hermann (JIRA) <j...@apache.org>
Subject [jira] [Assigned] (FLINK-710) Aggregate transformation works only with FieldPositionKeys
Date Fri, 21 Nov 2014 13:55:34 GMT

     [ https://issues.apache.org/jira/browse/FLINK-710?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Gábor Hermann reassigned FLINK-710:
-----------------------------------

    Assignee: Márton Balassi

> Aggregate transformation works only with FieldPositionKeys
> ----------------------------------------------------------
>
>                 Key: FLINK-710
>                 URL: https://issues.apache.org/jira/browse/FLINK-710
>             Project: Flink
>          Issue Type: Improvement
>            Reporter: GitHub Import
>            Assignee: Márton Balassi
>            Priority: Trivial
>              Labels: github-import
>             Fix For: pre-apache
>
>
> In the new Java API, Aggregate transformations can only be applied to DataSets that are
grouped using field positions and to ungrouped DataSets.
> DataSets grouped with KeySelector functions are not supported.
> Since Aggregations only work on Tuple DataSets which can be grouped using the more convenient
field positions, this might be OK.
> Or should we support KeySelector groupings as well for completeness? 
> Opinions?
> ---------------- Imported from GitHub ----------------
> Url: https://github.com/stratosphere/stratosphere/issues/710
> Created by: [fhueske|https://github.com/fhueske]
> Labels: enhancement, java api, question, user satisfaction, 
> Milestone: Release 0.6 (unplanned)
> Created at: Tue Apr 22 14:42:52 CEST 2014
> State: open



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