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https://issues.apache.org/jira/browse/FLINK-2320?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17233179#comment-17233179
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Sugar commented on FLINK-2320:
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Hello community,
Do we have any updates on this feature?
> Enable DataSet DataStream Joins
> -------------------------------
>
> Key: FLINK-2320
> URL: https://issues.apache.org/jira/browse/FLINK-2320
> Project: Flink
> Issue Type: New Feature
> Components: API / DataSet, API / DataStream
> Reporter: Matthias J. Sax
> Priority: Major
>
> Currently, DataSets and DataStreams cannot be joined with each other. This
> feature should include the following:
> - extend Streaming API to allow one join input to be a DataSet
> * in a first step, DataSet can be limited to be a DataSource
> * later on, full Flink program could compute DataSet
> -> maybe, Flink program be used update Join-DataSet periodically (in
> base data changed); including "synchonized" switching from old to new
> DataSet; update triggered by user/time/base-data-change?
> - in first version, inner-equi join should be sufficient
> * DataSet is used as build side for Hash-Join
> * extend current Hash-Join to consume DataStream as probe input
> - for full programs computing DataSet input, it might be helpful to extend
> optimizer ?
> - What about other joins? What join algorithm do we need to support
> (full/left/right) outer joins for Set-Stream-Join? What about theta joins?
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