KAFKA-7956 In ShutdownableThread, immediately complete the shutdown if the thread has not been started#6218

Merged

junrao merged 9 commits into

apache:trunkfrom

gardnervickers:shutdownablethread-nonblocking-shutdown

Feb 26, 2019

Commits on Feb 1, 2019

If the thread is not alive, complete shutdown when
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Go through the regular shutdown logic, just avoid awaiting the
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Commits on Feb 6, 2019

move the `Thread.isAlive` check in ShutdownableThread to
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Commits on Feb 7, 2019

Allow blocking on ShutdownableThread.awaitShutdown() regardless
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Commits on Feb 13, 2019

Don't block in `awaitShutdown()` if the thread is not started.
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Commits on Feb 18, 2019

Set ShutdownableThread started status in `start()` method to ensure
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Commits on Feb 19, 2019

Remove start() override.
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Commits on Feb 25, 2019

Adapt ControllerEventManager to the new ShutdownableThread behavior.
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Commits on Feb 26, 2019

Add comment explaining why the ShutdownEventThread handler does
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