The maven repository at http://www.systap.com/maven is back online. The bigdata 1.2.3 maven release artifact and necessary dependencies have been pushed to the repository. Snapshots are being published again from CI builds.
Our apologies for the recent outage on bigdata.com and systap.com. Our hosting provider attempted a platform migration that broke our sites. We have migrated the sites to EC2 and are working to clean up any remaining broken links.