[jira] [Commented] (FLINK-8478) Add support for time-bounded joins in DataStream API

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-8478?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16554479#comment-16554479 ] 

ASF GitHub Bot commented on FLINK-8478:
---------------------------------------

GitHub user florianschmidt1994 opened a pull request:

    https://github.com/apache/flink/pull/6407

    [FLINK-8478][docs] Add documentation page for different datastream joins

    ## What is the purpose of the change
    
    Add a documentation page under Application Development / Streaming / Joining that describes
    1. The different types of window joins in the DataStream API
    2. The newly introduced interval join in the DataStream API
    
    ## Brief change log
      - Added a new docs page
      - Added images to describe common scenarios
    
    ## Verifying this change
    
    Built the documentation with `./build_docs.sh` and it looks like expected
    
    ## Does this pull request potentially affect one of the following parts:
    
      - Dependencies (does it add or upgrade a dependency): no
      - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: no
      - The serializers: no
      - The runtime per-record code paths (performance sensitive): no
      - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: no
      - The S3 file system connector: no
    
    ## Documentation
    
      - Does this pull request introduce a new feature? no
      - If yes, how is the feature documented? not applicable
    
    For those that just want to have a "quick look" I attached a screenshot
    
    ![](https://i.imgur.com/c78WuD7.jpg)


You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/florianschmidt1994/flink flink-8478-add-docs-for-joins

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/flink/pull/6407.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #6407
    
----
commit d2800ff33af179dd32876020d27994b9dc6579aa
Author: Florian Schmidt <fl...@...>
Date:   2018-07-24T16:14:50Z

    [FLINK-8478] Add documentation page for different datastream joins

----


> Add support for time-bounded joins in DataStream API
> ----------------------------------------------------
>
>                 Key: FLINK-8478
>                 URL: https://issues.apache.org/jira/browse/FLINK-8478
>             Project: Flink
>          Issue Type: New Feature
>          Components: DataStream API, Java API, Scala API
>            Reporter: Florian Schmidt
>            Assignee: Florian Schmidt
>            Priority: Major
>              Labels: pull-request-available
>
> The goal is to implement a DataStream API to join together two streams based on a key and user defined time boundaries. 
> This feature should mirror what is already possible in Flink SQL:
> {code:java}
> SELECT s1.value, s2.value FROM Table s1 JOIN Table s2 ON o.key = s.key AND o.rowtime BETWEEN s.rowtime AND s.rowtime + INTERVAL '1' HOUR;
> {code}



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