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From xccui <...@git.apache.org>
Subject [GitHub] flink pull request #4625: [FLINK-6233] [table] Support time-bounded stream i...
Date Wed, 30 Aug 2017 15:41:40 GMT
GitHub user xccui opened a pull request:


    [FLINK-6233] [table] Support time-bounded stream inner join in the SQL API

    ## What is the purpose of the change
    This PR aims add an implementation of the time-bounded stream inner join for both proctime
and rowtime in the SQL API. For example, ``SELECT * from L, R WHERE L.pid = R.pid AND L.time
between R.time + X and R.time + Y``. A design document for this problem can be found [here](http://goo.gl/VW5Gpd).
    ## Brief change log
      - I fill the missing part of the compiling stage for the rowtime stream inner join.
      - Some logics are added to the `WindowJoinUtil` to extract the rowtime indices.
      - A general `TimeBoundedStreamInnerJoin` is provided.
      - To test the new join function, I add a `TimeBoundedJoinExample` and some new tests
to the `JoinHarnessTest`.
    ## Verifying this change
    This change added tests to the existing JoinHarnessTest.
    ## 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**)
    ## Documentation
      - Does this pull request introduce a new feature? (**yes**)
      - If yes, how is the feature documented? (**not documented yet**)

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

    $ git pull https://github.com/xccui/flink FLINK-6233

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


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

    This closes #4625
commit c79588b134a1270956a6d32b7a0a13ff4e3f483d
Author: Xingcan Cui <xingcanc@gmail.com>
Date:   2017-08-30T05:57:38Z

    [FLINK-6233] [table] Support rowtime inner equi-join between two streams in the SQL API


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