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https://issues.apache.org/jira/browse/FLINK-687?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ricky Pogalz updated FLINK-687:
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Comment: was deleted
(was: Hi, during the project course IMPRO3 at TU-Berlin we planned to work on
this operator as a bigger task in the next weeks. Unfortunately, I just
recognized that this parent issue is already assigned, but not the subtasks
though.
[~chiwanpark] Are you about to work on the sort-merge based outer join or is it
okay for you if we take this issue? )
> Add support for outer-joins
> ---------------------------
>
> Key: FLINK-687
> URL: https://issues.apache.org/jira/browse/FLINK-687
> Project: Flink
> Issue Type: New Feature
> Reporter: GitHub Import
> Assignee: Chiwan Park
> Priority: Minor
> Labels: github-import
> Fix For: pre-apache
>
>
> There are three types of outer-joins:
> - left outer,
> - right outer, and
> - full outer
> joins.
> An outer-join does not "filter" tuples of the outer-side that do not find a
> matching tuple on the other side. Instead, it is joined with a NULL value.
> Supporting outer-joins requires some modifications in the join execution
> strategies.
> ---------------- Imported from GitHub ----------------
> Url: https://github.com/stratosphere/stratosphere/issues/687
> Created by: [fhueske|https://github.com/fhueske]
> Labels: enhancement, java api, runtime,
> Created at: Mon Apr 14 12:09:00 CEST 2014
> State: open
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