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https://issues.apache.org/jira/browse/CURATOR-376?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15808791#comment-15808791
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ASF GitHub Bot commented on CURATOR-376:
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Github user asfgit closed the pull request at:
https://github.com/apache/curator/pull/187
> InterProcessSemaphoreMutex is not thread safe
> ---------------------------------------------
>
> Key: CURATOR-376
> URL: https://issues.apache.org/jira/browse/CURATOR-376
> Project: Apache Curator
> Issue Type: Bug
> Components: Recipes
> Affects Versions: 3.2.1, 2.11.1
> Reporter: ayanamist
>
> In `release` method, `lease.close()` will cause `semaphore.acquire` return,
> then two threads will write on same `this.lease` (one set it to
> `acquiredLease` while the other set it to `null`), so `acquire` method will
> return true and `this.lease` is still null, which can't be `release`.
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