The JobExecutor decrements the number of retries every time an exception is thrown during execution of jobs. The exception stacktrace is saved in the Jobs.

In the API (JobSession) I now add a method to query all failed jobs (where retries==0 and excpetion!=null) which will not be executed again by the JobExecutor.

I added the method "findFailedJobs", the hibernate named query "JobSession.findFailedJobs" and a test case for it.