The following problem was reported by user:
I have 2 JBoss instances sharing the same JobRepository. So on both instances one can see the executions for both instances. When I start an Execution on - let's say - node 1 and restart that same execution on node 2, then node 2 will start a new Execution starting from the last commited checkpoint while the first Execution keeps running on node 1. So now I have two Executions processing the same Items.
When I check the status of the Execution running on node 1 from node 2, I can see that it is in STARTED state. But the JobOperators ignores that and restarts it anyway.