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https://issues.apache.org/jira/browse/IGNITE-4173?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15965894#comment-15965894
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Vladisav Jelisavcic commented on IGNITE-4173:
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This was a bug, the cause was that attempt to recover from failure was throwing
the NPE for the newly created semaphores (because semaphores are lazily
initialized).
There is also a problem with the {{SemaphoreFailoverSafeReleasePermitsTest}}:
second semaphore was created only after the first node failed; in this scenario
there are no semaphores to attempt recovery so the permit is lost for good.
> IgniteSemaphore with failoverSafe enabled doesn't release permits in case
> permits owner node left topology
> ----------------------------------------------------------------------------------------------------------
>
> Key: IGNITE-4173
> URL: https://issues.apache.org/jira/browse/IGNITE-4173
> Project: Ignite
> Issue Type: Bug
> Affects Versions: 1.7
> Reporter: Andrey Gura
> Assignee: Vladisav Jelisavcic
> Fix For: 2.0
>
>
> {{IgniteSemaphore}} with {{failoverSafe}} enabled doesn't release permits in
> case permits owner node left topology.
> See reproducer in test class {{SemaphoreFailoverSafeReleasePermitsTest}}.
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