Missing jobs

Every time a job is submitted, a process is created to monitor the job and report about its completion. This process is called Agent Monitor (AM). When the AM is started (with every job), it creates two files for the job: a status file and a "procid" file.

In a normal scenario, the AM detects the job completion, updates the "procid" file and sends a trigger to the Agent Tracker (AT) about the completion. The AT then sends the update to Control-M/Server.

In a failover scenario, while the job is still executing, the agent process is stopped and the agent file system is unmounted from the first host. In this case the job can keep running, but the "procid" file will not be updated when the job completes (the agent file system will be mounted to the backup node). Therefore, when the agent is started on the backup node, and the next AT track time arrives, it will find the original "procid" file but it will not find the actual process. This is why the job is marked as disappeared.