[jira] [Commented] (BEAM-2899) Universal Local Runner

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/BEAM-2899?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16241217#comment-16241217 ] 

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

GitHub user tgroh opened a pull request:

    https://github.com/apache/beam/pull/4088

    [BEAM-2899] Add A FnService, FnServer to runner Fn Execution

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    ---
    A FnService is a closeable BindableService. A FnServer is exactly one
    FnService and a server which exposes it as an endpoint.

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

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

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

    https://github.com/apache/beam/pull/4088.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 #4088
    
----
commit 01f43e81dca37d1fae30cf0a7faae7bfdb521d21
Author: Thomas Groh <tg...@google.com>
Date:   2017-10-31T00:36:37Z

    Add A FnService, FnServer to runner Fn Execution
    
    A FnService is a closeable BindableService. A FnServer is exactly one
    FnService and a server which exposes it as an endpoint.

----


> 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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