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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-2576) Add outer joins to API and Optimizer
Date Fri, 25 Sep 2015 15:22:04 GMT

    [ https://issues.apache.org/jira/browse/FLINK-2576?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14908141#comment-14908141
] 

ASF GitHub Bot commented on FLINK-2576:
---------------------------------------

Github user fhueske commented on the pull request:

    https://github.com/apache/flink/pull/1138#issuecomment-143250678
  
    We have a couple of unit tests to check the correctness of the API, i.e., check that valid
use is working and invalid use throws an early exceptions. See for example `org.apache.flink.api.java.operator.JoinOperatorTest`.
It would be good to have such unit tests as well for outer joins.


> Add outer joins to API and Optimizer
> ------------------------------------
>
>                 Key: FLINK-2576
>                 URL: https://issues.apache.org/jira/browse/FLINK-2576
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Java API, Optimizer, Scala API
>            Reporter: Ricky Pogalz
>            Priority: Minor
>             Fix For: pre-apache
>
>
> Add left/right/full outer join methods to the DataSet APIs (Java, Scala) and to the optimizer
of Flink.
> Initially, the execution strategy should be a sort-merge outer join (FLINK-2105) but
can later be extended to hash joins for left/right outer joins.



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