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https://issues.apache.org/jira/browse/FLINK-1174?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Márton Balassi reassigned FLINK-1174:
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Assignee: Márton Balassi
> Add operator for temporal joins over time windows of two DataStreams
> --------------------------------------------------------------------
>
> Key: FLINK-1174
> URL: https://issues.apache.org/jira/browse/FLINK-1174
> Project: Flink
> Issue Type: Improvement
> Components: Streaming
> Reporter: Gyula Fora
> Assignee: Márton Balassi
> Priority: Minor
>
> There is a variety of use-cases that need an operator for joining data stream
> over predefined time windows by some field.
> Currently there is no dedicated operator to support this, however it could be
> implemented as a special case of the windowReduce operator of the
> ConnectedDataStream which applies the a CoWindowFunction on the list of
> tuples in the time windows for the two data streams.
> There is a temporal cross operator that has already been implemented which
> can serve as a good starting point here:
> https://github.com/mbalassi/incubator-flink/commit/876d4792478378177ad644f121c2b2460600b792
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