Github user squito commented on the pull request:
https://github.com/apache/spark/pull/1297#issuecomment-56199798
This looks great! my comments are minor.
I know its early to be discussing example docs, but I just wanted to
mention that I can see caching being an area of confusion. Eg., you wouldn't
want to serialize & cache each update to an indexedRDD, as each cache would
make a full copy and not get the benefits of the ImmutableVectors.
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