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https://issues.apache.org/jira/browse/BEAM-646?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15864228#comment-15864228
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ASF GitHub Bot commented on BEAM-646:
-------------------------------------
GitHub user tgroh opened a pull request:
https://github.com/apache/beam/pull/1998
[BEAM-646] Add Pipeline#replaceTransform
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---
This is the base method for Pipeline Surgery. It takes a
PTransformMatcher and a PTransformOverrideFactory, and replaces all
matching PTransforms with the result of the Override Factory.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/tgroh/beam replace_transform
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/beam/pull/1998.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 #1998
----
commit 963a6b31f5d670ddebac7d5347697948c8463607
Author: Thomas Groh <[email protected]>
Date: 2017-02-09T19:40:50Z
Add Pipeline#replaceTransform
This is the base method for Pipeline Surgery. It takes a
PTransformMatcher and a PTransformOverrideFactory, and replaces all
matching PTransforms with the result of the Override Factory.
----
> Get runners out of the apply()
> ------------------------------
>
> Key: BEAM-646
> URL: https://issues.apache.org/jira/browse/BEAM-646
> Project: Beam
> Issue Type: Improvement
> Components: beam-model-runner-api, sdk-java-core
> Reporter: Kenneth Knowles
> Assignee: Thomas Groh
>
> Right now, the runner intercepts calls to apply() and replaces transforms as
> we go. This means that there is no "original" user graph. For portability and
> misc architectural benefits, we would like to build the original graph first,
> and have the runner override later.
> Some runners already work in this manner, but we could integrate it more
> smoothly, with more validation, via some handy APIs on e.g. the Pipeline
> object.
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