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Posted to issues@flink.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2016/07/25 18:11:20 UTC

[jira] [Commented] (FLINK-4265) Add a NoOpOperator

    [ https://issues.apache.org/jira/browse/FLINK-4265?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15392411#comment-15392411 ] 

ASF GitHub Bot commented on FLINK-4265:
---------------------------------------

GitHub user greghogan opened a pull request:

    https://github.com/apache/flink/pull/2294

    [FLINK-4265] [dataset api] Add a NoOpOperator

    Adds a NoOpOperator which is unwound in OperatorTranslation.translate.

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

    $ git pull https://github.com/greghogan/flink 4265_add_a_noopoperator

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

    https://github.com/apache/flink/pull/2294.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 #2294
    
----
commit cc7b9f199777f396d5d15b789480486278267117
Author: Greg Hogan <co...@greghogan.com>
Date:   2016-07-25T18:05:56Z

    [FLINK-4265] [dataset api] Add a NoOpOperator
    
    Adds a NoOpOperator which is unwound in OperatorTranslation.translate.

----


> Add a NoOpOperator
> ------------------
>
>                 Key: FLINK-4265
>                 URL: https://issues.apache.org/jira/browse/FLINK-4265
>             Project: Flink
>          Issue Type: New Feature
>          Components: DataSet API
>    Affects Versions: 1.1.0
>            Reporter: Greg Hogan
>            Assignee: Greg Hogan
>            Priority: Minor
>             Fix For: 1.1.0
>
>
> One recent feature of Gelly is algorithms which detect duplicated or similar computation which can be shared. My initial implementation could only reuse a {{DataSet}} result. Before committing to Flink this was updated to use a javassist {{ProxyFactory}} allowing configuration to be merged and results to be replaced. There were some issues, as identified in FLINK-4257. With a {{NoOpOperator}} we can remove the use of {{ProxyFactory}} and resolve the identified issues.
> This ticket adds a {{NoOpOperator}} which is unwound in {{OperatorTranslation.translate}}. The {{NoOpOperator}} contains a {{DataSet}} which is accessed by a getter and setter.



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