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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (BEAM-2899) Universal Local Runner
Date Mon, 25 Sep 2017 23:50:00 GMT

    [ https://issues.apache.org/jira/browse/BEAM-2899?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16179967#comment-16179967
] 

ASF GitHub Bot commented on BEAM-2899:
--------------------------------------

GitHub user tgroh opened a pull request:

    https://github.com/apache/beam/pull/3898

    [BEAM-2899] Add a Bare-bones ReferenceRunner Job Service

    Follow this checklist to help us incorporate your contribution quickly and easily:
    
     - [ ] Make sure there is a [JIRA issue](https://issues.apache.org/jira/projects/BEAM/issues/)
filed for the change (usually before you start working on it).  Trivial changes like typos
do not require a JIRA issue.  Your pull request should address just this issue, without pulling
in other changes.
     - [ ] Each commit in the pull request should have a meaningful subject line and body.
     - [ ] Format the pull request title like `[BEAM-XXX] Fixes bug in ApproximateQuantiles`,
where you replace `BEAM-XXX` with the appropriate JIRA issue.
     - [ ] Write a pull request description that is detailed enough to understand what the
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     - [ ] If this contribution is large, please file an Apache [Individual Contributor License
Agreement](https://www.apache.org/licenses/icla.pdf).
    
    ---
    This will eventually accept Job API calls and execute a Pipeline using
    the ReferenceRunner backend.
    
    This change exists primarily to create the appropriate module and POM.
    


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

    $ git pull https://github.com/tgroh/beam ulr_execution

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

    https://github.com/apache/beam/pull/3898.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 #3898
    
----
commit 7cee5dc586c2851cd673baf05173ce0c480a9b41
Author: Thomas Groh <tgroh@google.com>
Date:   2017-08-04T17:58:32Z

    Add a Bare-bones ReferenceRunner Job Service
    
    This will eventually accept Job API calls and execute a Pipeline using
    the ReferenceRunner backend.
    
    This change exists primarily to create the appropriate module and POM.

----


> Universal Local Runner
> ----------------------
>
>                 Key: BEAM-2899
>                 URL: https://issues.apache.org/jira/browse/BEAM-2899
>             Project: Beam
>          Issue Type: Improvement
>          Components: runner-core
>            Reporter: Henning Rohde
>            Assignee: Thomas Groh
>              Labels: portability
>
> To make the portability effort tractable, we should implement a Universal Local Runner
(ULR) in Java that runs in a single server process plus docker containers for the SDK harness
containers. It would serve multiple purposes:
>   (1) A reference implementation for other runners. Ideally, any new feature should be
implemented in the ULR first.
>   (2) A fully-featured test runner for SDKs who participate in the portability framework.
It thus complements the direct runners.
>   (3) A test runner for user code that depends on or customizes the runtime environment.
For example, a DoFn that shells out has a dependency that may be satisfied on the user's desktop
(and thus works fine on the direct runner), but perhaps not by the container harness image.
The ULR allows for an easy way to find out.
> The Java direct runner presumably has lots of pieces that can be reused.



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