Kyle Weaver created BEAM-13658:
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Summary: Support projection pushdown after beginning of pipeline.
Key: BEAM-13658
URL: https://issues.apache.org/jira/browse/BEAM-13658
Project: Beam
Issue Type: New Feature
Components: sdk-java-core
Reporter: Kyle Weaver
The first iteration of projection pushdown will only support pushdown on
transforms at the beginning of the pipeline.
This is due to difficulties using PTransformOverrideFactory - it requires
getting the transform's input as an argument, and there's currently no way to
do this generically.
For more on projection pushdown, see BEAM-12976.
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