Erik Erlandson created SPARK-2911:
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Summary: provide rdd.parent[T](j) to obtain jth parent of rdd
Key: SPARK-2911
URL: https://issues.apache.org/jira/browse/SPARK-2911
Project: Spark
Issue Type: Improvement
Components: Spark Core
Reporter: Erik Erlandson
Priority: Minor
For writing RDD subclasses that involve more than a single parent dependency,
it would be convenient (and more readable) to say:
rdd.parent[T](j)
instead of:
rdd.dependencies(j).rdd.asInstanceOf[RDD[T]]
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