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https://issues.apache.org/jira/browse/SAMZA-1584?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shanthoosh Venkataraman updated SAMZA-1584:
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Summary: LocalApplicationRunner.waitForFinish blocks indefinitely. (was:
StreamProcessor.stop blocks indefinitely.)
> LocalApplicationRunner.waitForFinish blocks indefinitely.
> ---------------------------------------------------------
>
> Key: SAMZA-1584
> URL: https://issues.apache.org/jira/browse/SAMZA-1584
> Project: Samza
> Issue Type: Bug
> Reporter: Shanthoosh Venkataraman
> Assignee: Shanthoosh Venkataraman
> Priority: Major
>
> Recommended solution to kill streamApplication in standalone is the following:
> {code:java}
> LocalApplicationRunner.kill(streamApp);
> LocalApplicationRunner.waitForFinish();{code}
> `LocalApplicationRunner.kill(streamApplication)` invokes
> `StreamProcessor.stop()` and `StreamProcessor.stop()` invokes
> `SamzaContainer.shutdown()` to kill the samza-container.
> `SamzaContainer.shutdown()` marks the shutdown flag of `AsyncRunLoop` and
> shutdown flag will be taken into account by `AsyncRunLoop` when it chooses
> the next operation to execute.
> Actual shutdown sequence of StreamProcessor and ZkJobCoordinator is triggered
> on SamzaContainerListener.onContainerStop() callback which is fired when the
> SamzaContainer is completely shutdown. LocalApplication.awaitForFinish() will
> block forever in following two scenarios:
> * If any of the AsyncRunLoop operation(commit, window, process) is going on
> indefinitely, then the marked shutdown flag will not be seen by the
> AsyncRunLoop.
> * If any step in the SamzaContainer shutdown sequence blocks indefinitely.
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