Message from Geoff Black on the Github pull request :
I've updated the cdh services scripts and ZooKeeperClusterActionHandler.java to properly work with CDH3 when setting up an HBase cluster. Tested multiple times with 1 master + 1 region and also 1 master + 5 region on EC2.
The only issue I ran into was previously documented in https://issues.apache.org/jira/browse/HBASE-1960 where the HBase Master shuts down after only one attempt to access DFS. This is something that should be addressed by the HBase team or a fix integrated by Cloudera into CDH.