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https://issues.apache.org/jira/browse/MESOS-3264?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14702133#comment-14702133
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Greg Mann commented on MESOS-3264:
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[[email protected]], I ran that snippet in the JVM and it produced that
output exactly. Maybe it's not because the order of shutdown hooks is
unspecified, but rather since the shutdown hooks are run concurrently, maybe
the JVM continues on to other native object destructors after it has run
{{SchedulerDriver.finalize()}}, but while the method is still running. I'm not
sure where the destruction of native file-scope objects fits into this shutdown
scheme, and one of the mutexes causing trouble exist at file scope in
{{glog-0.3.3/src/logging.cc}}.
> JVM can exit prematurely following framework teardown
> -----------------------------------------------------
>
> Key: MESOS-3264
> URL: https://issues.apache.org/jira/browse/MESOS-3264
> Project: Mesos
> Issue Type: Bug
> Components: java api
> Affects Versions: 0.23.0, 0.24.0
> Reporter: Greg Mann
> Priority: Minor
> Labels: java, tech-debt
>
> In Java frameworks, it is possible for the JVM to begin exiting the program -
> via {{System.exit()}}, for example - while teardown of native objects such as
> the SchedulerDriver and associated Executors is still in progress.
> {{SchedulerDriver::stop()}} will return after it has sent messages to other
> actors to begin their teardown, meanwhile the JVM is free to terminate the
> program and thus begin executing native object destructors while those
> objects are still in use, potentially leading to a segfault.
> This has manifested itself in flaky tests from the ExamplesTest suite (see
> MESOS-830 and MESOS-1013), as mutexes from glog are destroyed while the
> framework is still shutting down and attempting to log.
> Ideally, a mechanism would exist to block the Java code until a confirmation
> that framework teardown is complete has been received.
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