Github user aarondav commented on the pull request:
https://github.com/apache/spark/pull/369#issuecomment-40034991
You'll have to define your Ordering outside of the test class, otherwise it
will try to bring in the test class's implicit "RDDSuite.this" into the
closure. You can define it inside an RDDSuite companion object, that probably
preserves the desired visibility semantics.
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