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https://issues.apache.org/jira/browse/UIMA-5909?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jerry Cwiklik closed UIMA-5909.
-------------------------------
Resolution: Fixed
Assignee: Jerry Cwiklik
Fix Version/s: 2.10.4AS
Modified to disable UIMA-AS ShutdownHook if -DDISABLE_SHUTDOWN_HOOK property
is defined
> UIMA-AS: Make Shutdown hooks optional
> -------------------------------------
>
> Key: UIMA-5909
> URL: https://issues.apache.org/jira/browse/UIMA-5909
> Project: UIMA
> Issue Type: Improvement
> Components: Async Scaleout
> Affects Versions: 2.10.2AS
> Reporter: Patrick Huy
> Assignee: Jerry Cwiklik
> Priority: Major
> Fix For: 2.10.4AS
>
>
> In BaseUIMAAsynchronousEngine_impl a shutdown hook gets added to the Runtime
> which stops the AsynchronousEngine. This makes it impossible for consumers to
> correclty implement a graceful shutdown behaviour on JVM shutdow.
>
> For applications running on Kubernetes the expectation is that on "SIGTERM"
> the application completes running requests and then exits. SIGTERM also
> triggers JVM shutdown hooks, the AS shutdown hooks prevent running requests
> from completing (because the AS Engine is stopped).
> It also seems like these hooks are never removed which might lead to issues
> if a lot of AS Engines are initialized.
> It would be benefitial to make these shutdown hooks optional or remove them
> outright.
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