Xudong Ni created MESOS-9178:
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Summary: mesos metrics: master failover time
Key: MESOS-9178
URL: https://issues.apache.org/jira/browse/MESOS-9178
Project: Mesos
Issue Type: Improvement
Components: master
Reporter: Xudong Ni
Quote from Yan Xu: Previous the argument against it is that you don't know if
all agents are going to come back after a master failover so there's not a
certain point that marks the end of "full reregistration of all agents".
However empirically the number of agents usually don't change during the
failover and there's an upper bound of such wait (after a 10min timeout the
agents that haven't reregistered are going to be marked unreachable so we can
just use that to stop the timer.
So we can define failover time as "the time it takes for all agents recovered
from the registry to be accounted for" i.e., either reregistered or marked as
unreachable.
This is of course looking at failover from an agent reregistration perspective.
Later after we add framework info persistence, we can similarly define the
framework perspective using reregistration time or reconciliation time.
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