Bill suggested that I send a note here regarding a planned change of valid metric names: https://reviews.apache.org/r/42879. Goal is to allow any character that may be part of a user-defined job name, in particular dots and hyphens. Fixing this will significantly reduce the logging noise of Aurora.
A lengthy discussion in https://issues.apache.org/jira/browse/AURORA-1282 concluded that everything exported via /vars will stay as it is. However, your code might be affected if you interact with the rather complex stats subsystem in another way. Best Regards, Stephan
