rxin/spark — pull request #1 by jegonzal (2013-08-06 22:22:10+00:00)
Title: GraphX merge upstream changes and switched vertex id type to long

In this pull request I have:

1) merged changes from upstream into the graph branch,
2) added in some old changes I had never committed,
3) switched to long vertex ids, and
4) switched to using 2d partitioning.

Unfortunately, I have not had a chance to test these changes extensively so you may want to pull into an alpha branch.