So you are trying to start BigSQL on your mac and get the following error:

java[5413] <Error>: kCGErrorFailure: Set a breakpoint 
@ CGErrorBreakpoint() to catch errors as they are logged.

after trying to run the following command:

hadoop namenode -format

The issue may have to do with the combination of your OS and Java version (we saw the error with OS 10.7.4 and Java version 1.6.0_51). We fixed this issue by updating the version of Java to the latest release and changed the definition of JAVA_HOME in in the main BigSQL directory.