Gregory Green has posted a pull request that warrants discussion. It
improves performance for Sets and Hashes by altering the storage format
for these collections. As such it will not permit a rolling upgrade,
though the Redis adapter is labelled "experimental" so maybe that's okay.
https://github.com/apache/geode/pull/404
The PR also fixes GEODE-2469, inability to handle hash keys having colons.
There was some discussion about altering the storage format that was
initiated by Hitesh. Personally I think Gregory's changes are better
than the current implementation and we should accept them, though I
haven't gone through the code changes extensively.
