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https://issues.apache.org/jira/browse/FLINK-2550?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14704884#comment-14704884
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Stephan Ewen commented on FLINK-2550:
-------------------------------------

How about we make the WindowInfoAvailable in the Function that is evaluated per 
window.

If the element wants to access it later, it has to explicitly grab the info and 
add it as a field.

> Rework DataStream API
> ---------------------
>
>                 Key: FLINK-2550
>                 URL: https://issues.apache.org/jira/browse/FLINK-2550
>             Project: Flink
>          Issue Type: Improvement
>          Components: Streaming
>    Affects Versions: 0.9
>            Reporter: Aljoscha Krettek
>            Assignee: Aljoscha Krettek
>             Fix For: 0.10
>
>
> After discussions on the mailing list we arrived at a consensus to rework the 
> streaming API to make it more fool-proof and easier to use. The resulting 
> design document is available here: 
> https://cwiki.apache.org/confluence/display/FLINK/Streams+and+Operations+on+Streams



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