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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (APEXCORE-580) Interface for processing and emitting control tuples
Date Tue, 03 Jan 2017 13:49:58 GMT

    [ https://issues.apache.org/jira/browse/APEXCORE-580?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15795105#comment-15795105
] 

ASF GitHub Bot commented on APEXCORE-580:
-----------------------------------------

GitHub user bhupeshchawda opened a pull request:

    https://github.com/apache/apex-core/pull/440

    [REVIEW ONLY] - APEXCORE-580-581 custom control tuple support

    

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

    $ git pull https://github.com/bhupeshchawda/apex-core APEXCORE-580-581-custom-control-tuples

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

    https://github.com/apache/apex-core/pull/440.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 #440
    
----
commit 372acaa255763db8f1e3ca349704ce57f6678ce1
Author: bhupeshchawda <bhupesh@apache.org>
Date:   2016-12-28T10:18:42Z

    Initial version working

commit 85113df6366d27a4d542e8b7b86a1fb3833cd064
Author: bhupeshchawda <bhupesh@apache.org>
Date:   2017-01-02T05:21:41Z

    putControl bug fix

commit c8c969600073b2fff36330a20276ae85539ee91b
Author: bhupeshchawda <bhupesh@apache.org>
Date:   2017-01-02T12:33:20Z

    Added propogate option to ControlAwareDefaultOutputPort. Fixed Thread Local.

commit c61c9f269ab88be47f96179ecc49af56041a1899
Author: bhupeshchawda <bhupesh@apache.org>
Date:   2017-01-03T08:43:20Z

    Bug fix- CCT was not unwrapped. Also added documentation

commit e9af367cccb6bc34c08e45ae375711422d79a2df
Author: bhupeshchawda <bhupesh@apache.org>
Date:   2017-01-03T11:35:31Z

    Added license headers

commit a45905c6eacafc02d4473ede802827fdac26fc51
Author: bhupeshchawda <bhupesh@apache.org>
Date:   2017-01-03T12:57:41Z

    Refactorings

----


> Interface for processing and emitting control tuples
> ----------------------------------------------------
>
>                 Key: APEXCORE-580
>                 URL: https://issues.apache.org/jira/browse/APEXCORE-580
>             Project: Apache Apex Core
>          Issue Type: Sub-task
>            Reporter: David Yan
>
> DefaultOutputPort needs to have a emitControl method so that operator code can call to
emit a control tuple.
> DefaultInputPort needs to have a processControl method so that operator would be able
to act on the arrival of a control tuple.
> Similar to a regular data tuple, we also need to provide a way for the user to provide
custom serialization for the control tuple.
> We need to design this so that the default behavior is to propagate control tuples to
all output ports, and it should allow the user to easily change that behavior. The user can
selectively propagate control tuples to certain output ports, or block the propagation altogether.



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