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https://issues.apache.org/jira/browse/HADOOP-10566?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13996618#comment-13996618
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Suresh Srinivas commented on HADOOP-10566:
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I will commit this patch shortly.
> Refactor proxyservers out of ProxyUsers
> ---------------------------------------
>
> Key: HADOOP-10566
> URL: https://issues.apache.org/jira/browse/HADOOP-10566
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: security
> Affects Versions: 2.4.0
> Reporter: Benoy Antony
> Assignee: Benoy Antony
> Attachments: HADOOP-10566.patch, HADOOP-10566.patch,
> HADOOP-10566.patch, HADOOP-10566.patch, HADOOP-10566.patch
>
>
> HADOOP-10498 added proxyservers feature in ProxyUsers. It is beneficial to
> treat this as a separate feature since
> 1> The ProxyUsers is per proxyuser where as proxyservers is per cluster. The
> cardinality is different.
> 2> The ProxyUsers.authorize() and ProxyUsers.isproxyUser() are synchronized
> and hence share the same lock and impacts performance.
> Since these are two separate features, it will be an improvement to keep them
> separate. It also enables one to fine-tune each feature independently.
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