Ilya Pronin created MESOS-8493:
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Summary: Master task state metrics discrepancy
Key: MESOS-8493
URL: https://issues.apache.org/jira/browse/MESOS-8493
Project: Mesos
Issue Type: Improvement
Affects Versions: 1.2.0
Reporter: Ilya Pronin
Currently if the task status update has no reason we don't increment
{{master/<state>/<source>/<reason>}} metric. Because of that
{{master/task_<status>/*}} counters may not sum up to {{master/tasks_<status>}}
counter, if for example a custom executor doesn't set a reason to its status
updates.
Since the zero value in {{Reason}} enum is already taken it is possible to just
count status updates with no reason an under artificial {{reason_unknown}} name.
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