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https://issues.apache.org/jira/browse/HADOOP-10590?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Benoy Antony updated HADOOP-10590:
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Attachment: HADOOP-10590.patch
Attaching a patch which makes the field in _ServiceAuthorizationManager_
_volatile_ instead of synchronizing mutators and accessors.
Since the state is _volatile_, the effectively mutable state is safely
published and hence correctly visible to all threads accessing the state.
To understand more on the validity of this safe publication approach, please
see https://issues.apache.org/jira/browse/HADOOP-10448?focusedCommentId=13980112
> ServiceAuthorizationManager is not threadsafe
> ----------------------------------------------
>
> Key: HADOOP-10590
> URL: https://issues.apache.org/jira/browse/HADOOP-10590
> Project: Hadoop Common
> Issue Type: Bug
> Components: security
> Affects Versions: 2.4.0
> Reporter: Benoy Antony
> Assignee: Benoy Antony
> Attachments: HADOOP-10590.patch
>
>
> The mutators in ServiceAuthorizationManager are synchronized. The accessors
> are not synchronized.
> This results in visibility issues when ServiceAuthorizationManager's state
> is accessed from different threads.
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