[jira] [Updated] (SAMZA-1584) LocalApplicationRunner.waitForFinish blocks indefinitely.

["Shanthoosh Venkataraman (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SAMZA-1584?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Shanthoosh Venkataraman updated SAMZA-1584:
-------------------------------------------
    Summary: LocalApplicationRunner.waitForFinish blocks indefinitely.  (was: Unbounded wait in StreamProcessor.stop().)

> 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:
> LocalApplicationRunner.kill(streamApp);
> LocalApplicationRunner.waitForFinish(streamApp);
> 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 SamzaContainer shutdown sequence blocks indefinitely.



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)