Dominic Hamon created MESOS-1456:
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Summary: Metric lifetime should be tied to process runstate, not
lifetime.
Key: MESOS-1456
URL: https://issues.apache.org/jira/browse/MESOS-1456
Project: Mesos
Issue Type: Bug
Components: statistics
Affects Versions: 0.19.0
Reporter: Dominic Hamon
Assignee: Dominic Hamon
The usual pattern for termination of processes is {{terminate(..); wait(..);
delete ..;}} but the {{SchedulerProcess}} is terminated and then deleted some
time later.
If the metrics endpoint is accessed within that period, it never returns as it
tries to access a {{Gauge}} that has a reference to a valid PID that is not
getting any timeslices (the {{SchedulerProcess}}). A one-off fix can be made to
the {{SchedulerProcess}} to move the metrics add/remove calls to {{initialize}}
and {{finalize}}, but this should be the general pattern for every process with
metrics.
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