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https://issues.apache.org/jira/browse/UIMA-3244?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jerry Cwiklik updated UIMA-3244:
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Fix Version/s: 1.0-Ducc
> DUCC SM: race - incoming instance state can override global while service is
> stopping
> -------------------------------------------------------------------------------------
>
> Key: UIMA-3244
> URL: https://issues.apache.org/jira/browse/UIMA-3244
> Project: UIMA
> Issue Type: Bug
> Components: DUCC
> Affects Versions: 1.0-Ducc
> Reporter: Jim Challenger
> Assignee: Jim Challenger
> Fix For: 1.0-Ducc
>
>
> If a service is unregistered a stop is issued to all instances and global
> state is set to Stopping. If, at the exact time the stop is being
> implemented, state from an instance that hasn't yet been terminated comes in,
> it can progress state back to Available. Internal state gets frotzed so
> query and attempts to reregister the service fail, but retries to unregister
> or stop it fail.
> The solution is to insure that, when stopping, the Cumulative State of the
> service is never allowed to progress regardless of the instance state at any
> moment.
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