Totally agreed that the world outside Google has mostly caught up. An equivalent for BigTable and associated libraries is still missing though. Hypertable, HBas

Totally agreed that the world outside Google has mostly caught up. An equivalent for BigTable and associated libraries is still missing though. Hypertable, HBase, KDI and even Cassandra are extremely poor substitutes. I often end up resorting to App Engine for many projects but wish that there was a true open source substitute.