We have posted a draft of the bigdata HA white paper online . As part of this effort, we are going to simplify the deployment, configuration and administration of the distributed database.
We are planning an initial HA release in 3-4 months. This is a great time to get us your feedback on features which you would like to see in the HA design, e.g., hooks for monitoring frameworks, etc.
You can follow the design discussions on the bigdata-developers mailing list .