Josh Rosen created SPARK-4655:
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Summary: Split Stage into ShuffleMapStage and ResultStage
subclasses
Key: SPARK-4655
URL: https://issues.apache.org/jira/browse/SPARK-4655
Project: Spark
Issue Type: Sub-task
Components: Spark Core
Reporter: Josh Rosen
Assignee: Josh Rosen
The scheduler's {{Stage}} class has many fields which are only applicable to
result stages or shuffle map stages. As a result, I think that it makes sense
to make {{Stage}} into an abstract base class with two subclasses,
{{ResultStage}} and {{ShuffleMapStage}}. This would improve the
understandability of the DAGScheduler code.
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