fix small naming errors in supervision.rst
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@ -11,13 +11,13 @@ What Supervision Means
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Supervision describes a dependency relationship between actors: the supervisor
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delegates tasks to subordinates and therefore must respond to their failures.
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When a subordinate detects a failure (i.e. throws an exception), it suspends
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itself and all its children and sends a message to its supervisor, signaling
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failure. Depending on the nature of the work to be supervised and the nature
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of the failure, the supervisor has four basic choices:
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itself and all its subordinates and sends a message to its supervisor,
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signaling failure. Depending on the nature of the work to be supervised and
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the nature of the failure, the supervisor has four basic choices:
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#. Resume the subordinate, keeping its accumulated internal state
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#. Restart the subordinate, clearing out its accumulated internal state
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#. Stop the subordinate permanently
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#. Terminate the subordinate permanently
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#. Escalate the failure
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It is important to always view an actor as part of a supervision hierarchy,
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@ -83,7 +83,7 @@ What Lifecycle Monitoring Means
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In contrast to the special relationship between parent and child described
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above, each actor may monitor any other actor. Since actors emerge from
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creation fully started and restarts are not visible outside of the affected
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creation fully alive and restarts are not visible outside of the affected
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supervisors, the only state change available for monitoring is the transition
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from alive to dead. Monitoring is thus used to tie one actor to another so that
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it may react to the other actor’s termination, in contrast to supervision which
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