GitHub user tgroh opened a pull request:
https://github.com/apache/beam/pull/2006
[BEAM-646] Get the #apply out of the DirectRunner
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Use the Graph Surgery API in the DirectRunner.
The Forwarding View is currently required to ensure that the `WriteView`
transform
is marked as the producer of the View proper. It is then replaced by the
original view,
so the Pipeline writes the view to the correct location.
I'm going to revisit the producer-marking code soon, but this is safe to
review.
I also missed invariant maintenance within TransformHierarchy within #1998,
so that's added here as well.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/tgroh/beam surgery_ish
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/beam/pull/2006.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 #2006
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commit 46543d75a92b8c6c19b55581ec8253ffd76f4058
Author: Thomas Groh <tg...@google.com>
Date: 2017-02-09T19:37:33Z
Return a Forwarding View in View Overrides
This ensures that replacing an output will not fail to mark the
overridden view as produced by the replacement transform.
commit e950ba71d7cc6910c6be7dd39576bca3c96287de
Author: Thomas Groh <tg...@google.com>
Date: 2017-02-14T21:56:07Z
Add the replacement input to Unexpanded Inputs
commit a8bf815ea4f0ff3bc9701936cd1547d222eafebc
Author: Thomas Groh <tg...@google.com>
Date: 2017-02-09T19:45:06Z
Use Graph Surgery in the DirectRunner
Remove DirectRunner#apply(). This migrates the DirectRunner to work on a
runner-agnostic graph.
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