[jira] [Resolved] (FLINK-7837) AggregatingFunction does not work with immutable types

["Aljoscha Krettek (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-7837?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Aljoscha Krettek resolved FLINK-7837.
-------------------------------------
    Resolution: Fixed

Fixed in f176c917d56fa682c047930be9e579b635d7268b

> AggregatingFunction does not work with immutable types
> ------------------------------------------------------
>
>                 Key: FLINK-7837
>                 URL: https://issues.apache.org/jira/browse/FLINK-7837
>             Project: Flink
>          Issue Type: Bug
>          Components: DataStream API
>            Reporter: Aljoscha Krettek
>            Assignee: Aljoscha Krettek
>            Priority: Blocker
>             Fix For: 1.4.0
>
>
> Currently {{add()}} has this signature:
> {code}
> void add(IN value, ACC accumulator);
> {code}
> meaning that a value can only be added to an accumulator by modifying the accumulator. This should be extended to:
> {code}
> ACC add(IN value, ACC accumulator);
> {code}



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