Github user aarondav commented on the pull request:
https://github.com/apache/spark/pull/1502#issuecomment-49579153
License updated, as well as performance numbers. Our memory overhead is now
very low on certain workloads (4*N bytes worst case scenario, but experimental
results have shown remarkably little scratch space allocated), and our
performance is now 2-4 times better than the previous implementation.
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