Jim Challenger created UIMA-3707:
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Summary: DUCC SM should mark custom pingers so they're more easily
reaped.
Key: UIMA-3707
URL: https://issues.apache.org/jira/browse/UIMA-3707
Project: UIMA
Issue Type: Improvement
Components: DUCC
Reporter: Jim Challenger
Assignee: Jim Challenger
Priority: Minor
If the Service Manager is killed-with-prejudice it can leave CUSTOM pingers
alive and orphaned (children of init).
SM should clearly mark these processes so cleanup procedures can easily find
them and reap them as part of system startup. The proposed mechanism is to set
a -Dmarker as a no-op system property to ServicePingMain that is easily
discovered using ps. Startup scripting (and check_ducc) will look for these
processes and kill them prior to starting SM.
As well SM should implement a shutdown hook that attempts to stop these pingers
if it is stopped with only-a-little-prejudice.
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