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From "Ilya Lantukh (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (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
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Ilya Lantukh edited comment on IGNITE-7090 at 3/29/18 11:56 AM:
----------------------------------------------------------------

[~Timay],
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.

[~vladisav],
Thanks for review! Is it ready to be merged?


was (Author: ilantukh):
[~Timay]],
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.

[~vladisav],
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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