[infinispan-issues] [JBoss JIRA] (ISPN-2496) Test for DistributedExecutionCompletionService hangs, if instantiation is done using PriorityBlockingQueue

[Dan Berindei (JIRA)]

     [ https://issues.jboss.org/browse/ISPN-2496?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dan Berindei updated ISPN-2496:
-------------------------------

        Status: Resolved  (was: Pull Request Sent)
    Resolution: Done


I integrated the PriorityBlockingQueue warning.
                
> Test for DistributedExecutionCompletionService hangs, if instantiation is done using PriorityBlockingQueue
> ----------------------------------------------------------------------------------------------------------
>
>                 Key: ISPN-2496
>                 URL: https://issues.jboss.org/browse/ISPN-2496
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Distributed Execution and Map/Reduce
>            Reporter: Anna Manukyan
>            Assignee: Vladimir Blagojevic
>
> Hi,
> while writing tests for DistributedExecutionCompletionService, the following issue arrised:
> I'm creating DistributedExecutionCompletionService with constructor:
>     DistributedExecutionCompletionService(DistributedExecutorService executor, BlockingQueue<NotifyingFuture<V>> completionQueue)
> If I'm passing as a completionQueue instance of ArrayBlockingQueue, then everything works properly. But if as a completionQueue I'm passing instance of PriorityBlockingQueue, then the test hangs.
> It hangs on line 61 of DistributedExecutionCompletionService:
>     completionQueue.add((NotifyingFuture<V>)future);
> You can find the test reproducing the issue here: 
> https://github.com/andyuk1986/infinispan/blob/DIST_EXEC_TESTS/core/src/test/java/org/infinispan/distexec/DistributedExecutionCompletionTest.java (testBasicInvocationWithBlockingQueue()).

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