Explicit log statements at the start and end of jobs are the reason why we ended up with the haphazard logging to be fixed with CONF-9447.

We should fix this properly by wrapping the job beans in a logging interceptor that logs the start and end of the job. There should be ample examples on the web of how to do this with Spring. Our transaction proxy configuration or Bandana transactional cache logging advice might also be useful examples.