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Posted to issues@flink.apache.org by "amit pal (JIRA)" <ji...@apache.org> on 2015/02/25 12:32:06 UTC

[jira] [Commented] (FLINK-1450) Add Fold operator to the Streaming api

    [ https://issues.apache.org/jira/browse/FLINK-1450?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14336381#comment-14336381 ] 

amit pal commented on FLINK-1450:
---------------------------------

Any pointer as to how to develop this operator. I am new to Flink and would like to pick this as my first task.

> Add Fold operator to the Streaming api
> --------------------------------------
>
>                 Key: FLINK-1450
>                 URL: https://issues.apache.org/jira/browse/FLINK-1450
>             Project: Flink
>          Issue Type: New Feature
>          Components: Streaming
>    Affects Versions: 0.9
>            Reporter: Gyula Fora
>            Priority: Minor
>              Labels: starter
>
> The streaming API currently doesn't support a fold operator.
> This operator would work as the foldLeft method in Scala. This would allow effective implementations in a lot of cases where a the simple reduce is inappropriate due to different return types.



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