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From "Ilya Lantukh (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (IGNITE-7090) Semaphore Stuck when no acquirers to assign permit
Date Thu, 29 Mar 2018 11:57:01 GMT

    [ https://issues.apache.org/jira/browse/IGNITE-7090?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16418841#comment-16418841

Ilya Lantukh commented on IGNITE-7090:

Thank you for the work you've done on this issue. I've checked TC status. looks like it doesn't
introduce new test failures anymore.

Thanks for review! Is it ready to be merged?

> Semaphore Stuck when no acquirers to assign permit
> --------------------------------------------------
>                 Key: IGNITE-7090
>                 URL: https://issues.apache.org/jira/browse/IGNITE-7090
>             Project: Ignite
>          Issue Type: Bug
>          Components: cache, data structures
>    Affects Versions: 2.1, 2.4
>            Reporter: Tim Onyschak
>            Assignee: Tim Onyschak
>            Priority: Major
>             Fix For: 2.5
>         Attachments: SemaphoreFailoverNoWaitingAcquirerTest.java
> If no acquirers are available to take permit of semaphore, the permit never gets release
and any further acquirerers will wait forever. 
> On node shut down DataStructuresProcessor.dsMap gets cleared out prior to event listener
being able to execute onNodeRemoved, hence owner is never cleared out if it was unable to
pass to a different acquirer. 

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