Jim Challenger created UIMA-3704:
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Summary: DUCC SM should support timestamps to identify idle
services
Key: UIMA-3704
URL: https://issues.apache.org/jira/browse/UIMA-3704
Project: UIMA
Issue Type: Improvement
Components: DUCC
Reporter: Jim Challenger
Assignee: Jim Challenger
Priority: Minor
The Service Manager's ping/monitor protocol should support a mechanism to
provide identification of services that are started and using resources, but
which have been idle for a "long time". The mechanism should enable
identification of idle services and a mechanism to turn off the services under
site policies.
The proposed mechanism is for the ping/monitors to support a "last use"
timestamp which indicates the last apparent use of the service. Display
mechanisms such as the web server would use this to identify unused or
lightly-used services.
The mechanism also should enable ping/monitor support to automatically stop
idle services. The Service Manager's start-by-reference mechanism is then used
to start the service if some job later needs the service, with the only loss
being the time needed to initialize the service.
The mechanism should also enable the ping/monitor to re-enable the service's
persistent running state if it determines this is needed.
The proposed mechanism for this second step is to allow the ping/monitor to
enable or disable the service's "autostart" flag.
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