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The "GroomServer" page has been changed by ChiaHungLin: https://wiki.apache.org/hama/GroomServer?action=diff&rev1=8&rev2=9 == Scenario == + === Normal Case === + [[attachment:groomserver_state.png]] + + * A GroomServer forks a new task. + * The spawned task '''ack''' with metrics to GroomServer. + * Upon reception of task's ack, the GroomServer exports metrics to monitor system. + + === Failure Case === + [[attachment:groomserver_state.png]] + + * A task failure event happens. + * A corresponded GroomServer detects the task failure. + * The GroomServer tries to restart the task. + * If failing restart, the GroomServer export by marking the task as failed.
