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E-MapReduce:Manage tasks and task instances

Last Updated:Mar 26, 2026

After you save a workflow, you can manage its tasks on the Task Definition page and monitor task runs on the Task Instance page.

Manage tasks

On the Task Definition page, both operations apply only to tasks in the offline state.

Operation When to use Effect
Version Roll back a task to an earlier version. Switches the task to the selected offline version.
Delete Remove a task that is no longer needed. Deletes the task. Only offline tasks can be deleted.

Manage task instances

On the Task Instance page, the following operations are available for individual task runs.

Operation When to use Effect
Forced Success A task instance is stuck in a failed state and is blocking downstream tasks. Marks the task instance as successful so downstream tasks can proceed.
View Log Diagnose why a task instance failed or behaved unexpectedly. Logs are the first place to check when a task fails. Opens the log output for the selected task instance.
Download Log Save logs for offline analysis or to share with support. Downloads the log file to your local computer.