seojangho opened a new pull request #104: [NEMO-183] DAG-centric translation from Beam pipeline to IR DAG URL: https://github.com/apache/incubator-nemo/pull/104 JIRA: [NEMO-183: DAG-centric translation from Beam pipeline to IR DAG](https://issues.apache.org/jira/projects/NEMO/issues/NEMO-183) **Major changes:** - Implemented DAG-centric translation from Beam pipeline to Nemo IR, which consists to the two phases: - **PipelineVisitor** traverses through the given Beam pipeline to construct DAG of Beam transforms, while preserving the hierarchy of CompositeTransforms. - **PipelineTranslator** defines not only mappings between PrimitiveTransform and IRVertex, but also correspondneces between CompositeTransform and TranslationContext, based on which PipelineTranslator can tune translation behavior. **Minor changes to note:** - N/A **Tests for the changes:** - Modiifed existing tests to match the topological ordering produced by the new visitor. **Other comments:** - N/A resolves [NEMO-183](https://issues.apache.org/jira/projects/NEMO/issues/NEMO-183)
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