Effect on the system batch queue when DNS Batch Servers are started or stopped

When a DNS batch server starts up, it checks the batch queue for any jobs that were previously marked as being taken for execution, or in progress, by that server, then flags those jobs with a new unique status that identifies them as needing to be re-submitted.

A started job gets marked with a Status of Failed and an Exit Message of 'Server outage or JVM crash' on the MSEJEX—Job Executions Detail screen. The failed jobs also get logged to the DNS batch server console.

A DNS batch server can be stopped from polling so that the jobs it is holding can finish gracefully and the batch server be stopped using the Batch Service API.