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From "Jonathan Halterman (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (ZOOKEEPER-3445) Concurrency issue in ReferenceCountedACLCache
Date Fri, 28 Jun 2019 15:17:00 GMT

     [ https://issues.apache.org/jira/browse/ZOOKEEPER-3445?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jonathan Halterman resolved ZOOKEEPER-3445.
-------------------------------------------
    Resolution: Invalid

> Concurrency issue in ReferenceCountedACLCache
> ---------------------------------------------
>
>                 Key: ZOOKEEPER-3445
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3445
>             Project: ZooKeeper
>          Issue Type: Bug
>          Components: server
>    Affects Versions: 3.5.5, 3.4.14
>            Reporter: Jonathan Halterman
>            Priority: Critical
>              Labels: pull-request-available
>          Time Spent: 2.5h
>  Remaining Estimate: 0h
>
> While debugging some unexpected "ACL not available for long" exceptions we were seeing,
I noticed that ReferenceCountedACLCache does not mark aclIndex as volatile, which it should
since it appears to be read from multiple threads. This may or may not be the cause of the
behavior we're seeing, but should be fixed regardless.



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