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https://issues.apache.org/jira/browse/HADOOP-10703?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14292255#comment-14292255
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Benoy Antony commented on HADOOP-10703:
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Could I please get a review of this patch ?
We have been running with this change on a our internal clusters for last 6
months and no issue has been detected.
I have not seen anything in the servlet spec which prohibits sharing filter s
across web apps.
> Duplicate filter instances are created during HttpServer2 initialization
> ------------------------------------------------------------------------
>
> Key: HADOOP-10703
> URL: https://issues.apache.org/jira/browse/HADOOP-10703
> Project: Hadoop Common
> Issue Type: Bug
> Components: security
> Affects Versions: 2.4.0
> Reporter: Benoy Antony
> Assignee: Benoy Antony
> Attachments: HADOOP-10703.patch,
> multiple-authenticationfilter-inits.log
>
>
> The HttpServer2.defineFilter creates a Filter instance for each context. By
> default, there are 3 contexts.
> So there will be 3 separate AuthenticationFilter instances and corresponding
> AuthenticationHandler instances. This also results in 3 separate
> initializations of AuthenticationHandler.
> The log file illustrating this repeated initialization is attached.
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