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https://issues.apache.org/jira/browse/BEAM-646?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15891039#comment-15891039
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ASF GitHub Bot commented on BEAM-646:
-------------------------------------
Github user asfgit closed the pull request at:
https://github.com/apache/beam/pull/2119
> 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
> Labels: backwards-incompatible
>
> 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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