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https://issues.apache.org/jira/browse/BEAM-2076?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16001737#comment-16001737
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ASF GitHub Bot commented on BEAM-2076:
--------------------------------------

GitHub user tgroh opened a pull request:

    https://github.com/apache/beam/pull/2973

    [BEAM-2076] Shade Additional Direct Runner Dependencies

    Be sure to do all of the following to help us incorporate your contribution
    quickly and easily:
    
     - [ ] Make sure the PR title is formatted like:
       `[BEAM-<Jira issue #>] Description of pull request`
     - [ ] Make sure tests pass via `mvn clean verify`.
     - [ ] Replace `<Jira issue #>` in the title with the actual Jira issue
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Agreement](https://www.apache.org/licenses/icla.pdf).
    
    ---
    Add a DirectRunner API Surface Test.
    
    Repackaging runners-core appears to cause the direct runner to hang.
    Investigations in progress.

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

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

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

    https://github.com/apache/beam/pull/2973.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 #2973
    
----
commit 6ce163197d5da03d4750fc89bf617863b385d071
Author: Thomas Groh <tg...@google.com>
Date:   2017-05-03T17:53:12Z

    Shade Additional Direct Runner Dependencies
    
    Add a DirectRunner API Surface Test.
    
    Repackaging runners-core appears to cause the direct runner to hang.
    Investigations in progress.

----


> DirectRunner: minimal transitive API surface
> --------------------------------------------
>
>                 Key: BEAM-2076
>                 URL: https://issues.apache.org/jira/browse/BEAM-2076
>             Project: Beam
>          Issue Type: Improvement
>          Components: runner-direct
>            Reporter: Daniel Halperin
>            Assignee: Thomas Groh
>             Fix For: 2.0.0
>
>
> The {{DirectRunner}} is likely to accidentally be on many users' classpath 
> when they are running on other runners. As such, it should have a minimal 
> transitive API surface, shading things it needs directly and need not expose.
> My base assumption is that {{runners-core}} should be shaded. There may be 
> others tho -- this merits a bit of a look.



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