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From "Larry McCay (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-10833) Remove unused cache in UserProvider
Date Tue, 26 Aug 2014 18:51:58 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-10833?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14111133#comment-14111133
] 

Larry McCay commented on HADOOP-10833:
--------------------------------------

Hi [~benoyantony] - I am curious why you would remove the cache rather than fix it so that
it is used properly? I'm not sure that passwords necessarily need to be retrieved more than
once by the same consumer but they may...

> Remove unused cache in UserProvider
> -----------------------------------
>
>                 Key: HADOOP-10833
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10833
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: security
>    Affects Versions: 2.4.1
>            Reporter: Benoy Antony
>            Assignee: Benoy Antony
>         Attachments: HADOOP-10833.patch, HADOOP-10833.patch
>
>
> _UserProvider_ contains the field cache.
> {code}
>   private final Map<String, CredentialEntry> cache = new HashMap<String, 
>       CredentialEntry>();
> {code}
> 	
> It is referenced only in {{deleteCredentialEntry}} and so there is no real usage of {{cache}}.



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