Check the comments for a reply from an HBase committer.
Interesting and critical take on DynamoDB
Interesting project simliar to LevelDB
Spoiler alert, MongoDB 2.0 kick some serious butt.
Interesting take on various replication schemes.
This is where its all going. Looks a lot like Hbase to the extreme.
Looks a lot like #mongodb
LSM Trees are out, COLAs are in and Cassandra has an even better idea.
MongoDB clusters with 100+ nodes
A great collection of LevelDB links and info.
A good reiteration of shard key best practices.
Another great use of Redis.
More awesome uses of Redis.
Distributed Storage System Classification
