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https://issues.apache.org/jira/browse/FLINK-703?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14407480#comment-14407480
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ASF GitHub Bot commented on FLINK-703:
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GitHub user chiwanpark opened a pull request:
https://github.com/apache/flink/pull/572
[FLINK-703] Use complete element as join key
Hello. I open a pull request about FLINK-703. You can find more detail
description in [JIRA](https://issues.apache.org/jira/browse/FLINK-703). This PR
contains following changes.
* Add `BasicKeySelector` class to use complete element as key.
* Add `checkForAtomicType` method in `Keys` class to check condition.
* Modify `CoGroupOperator`, `JoinOperator`, `DataSet` in Java and Scala API
* Add some unit tests and integration tests to test this modification.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/chiwanpark/flink FLINK-703
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/572.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 #572
----
commit e6804bbf4d5ec345a723d692da26b277a1cabf04
Author: Chiwan Park <[email protected]>
Date: 2015-04-05T18:18:23Z
[FLINK-703] [java api] Use complete element as join key
commit 862c5a5608cd7fd8af22c5a781e87ef0ece79e85
Author: Chiwan Park <[email protected]>
Date: 2015-04-05T20:07:11Z
[FLINK-703] [scala api] Use complete element as join key
----
> Use complete element as join key.
> ---------------------------------
>
> Key: FLINK-703
> URL: https://issues.apache.org/jira/browse/FLINK-703
> Project: Flink
> Issue Type: Improvement
> Reporter: GitHub Import
> Assignee: Chiwan Park
> Priority: Trivial
> Labels: github-import
> Fix For: pre-apache
>
>
> In some situations such as semi-joins it could make sense to use a complete
> element as join key.
> Currently this can be done using a key-selector function, but we could offer
> a shortcut for that.
> This is not an urgent issue, but might be helpful.
> ---------------- Imported from GitHub ----------------
> Url: https://github.com/stratosphere/stratosphere/issues/703
> Created by: [fhueske|https://github.com/fhueske]
> Labels: enhancement, java api, user satisfaction,
> Milestone: Release 0.6 (unplanned)
> Created at: Thu Apr 17 23:40:00 CEST 2014
> State: open
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