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https://issues.apache.org/jira/browse/FLINK-2576?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14950225#comment-14950225
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ASF GitHub Bot commented on FLINK-2576:
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Github user fhueske commented on the pull request:
https://github.com/apache/flink/pull/1138#issuecomment-146835992
Looks good. I added one commit to restore binary compatibility. The code is
not super nice, but it allows to runt programs which have been previously
compiled without the need to recompile. We can still clean up the code later if
we decide to do so. Final tests are running, will merge after they passed.
> 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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