Github user rxin commented on the pull request:
https://github.com/apache/spark/pull/1452#issuecomment-49259394
That was actually my main concern from the beginning with this change. From
my initial observation everything does seem work. I intentionally avoided
keeping references to the broadcast variables outside of RDDs, so the broadcast
variable should have the same scope as the RDD itself, and thus gets cleaned up
as long as we properly clean up RDDs and broadcast variables.
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