Scenario 6: The Scheduled-Task-in-Abeyance Scenario

Scenario Description

These scenarios cover cases where a user's custom workflow has scheduled a task for execution at a later date on a specific node. Before the scheduled date is reached, the node that the task was scheduled on fails.

Without Session Persistence

User experience: The failover is transparent with respect to the recovery actions required to ensure that this task executes at its scheduled time.

Recovery steps: The scheduled task is taken up by any live node when the scheduled execution time arrives.

With Session Persistence

User experience: Same as in the Without Session Persistence mode.

Recovery steps: Same as in the Without Session Persistence mode.

Other Scenario Examples

• In the process of a user's account creation, the Deferred Task Scanner is used to implement enabling an account on a sunrise date or to implement disabling the account on a sunset date. Before the sunrise or sunset date arrives, the node that the task was scheduled on fails.

• A report is scheduled to run at a future time, or a reconciliation is scheduled to run at a specific time and, before the time is reached, the node the task was scheduled on fails.