JS7 JobScheduler

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Old Version 7

changes.mady.by.user Alan Amos

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New Version 8

changes.mady.by.user Andreas Püschel

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  • Users do not receive up-to-date information:
    • The JOC Cockpit will not receive updated information about the state of orders and of workflow execution results.
    • The GUI will report the Controller being unreachable and will have no information about the status of Agents.
  • Any interaction with a Controller such as deploying workflows and cancelling/suspending orders will be delayed.
    • This means that such requests are held in memory with the JOC Cockpit Proxy Service which will try to forward the requests when the Controller becomes available.
    • It is not recommended that the JOC Cockpit is restarted in this situation as pending requests would be lost and deployments would have to be repeated.
  • The JOC Cockpit Proxy Service will try to re-establish the connection to the Controller. When this is successful the GUI will automatically updates the update the status of the Controller in its Dashboard.

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  • Workflows are deployed to Agents just once - at design-time. At run-time, the Agent will have received orders for workflows some time, such as a week, in advance. These orders come from the JS7 - Daily Plan Service, and the agent Agent can execute them autonomously.
  • In case of a Controller outage:
    • Agents will continue to execute workflows at the scheduled date and time. 
    • the Agent's journal will grow. The journal holds execution results for workflows and order state transitions.
  • Depending on the workflow load, the journal files that are stored with the ./state directory can grow to some Gigabytes. There is no harm in this as long as sufficient storage is available.
  • When the connection between Controller and Agent becomes available then the Agent will report back order state transitions and execution results to the Controller and the Agent's journal will shrink.

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