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https://issues.apache.org/jira/browse/HADOOP-15758?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hrishikesh Gadre resolved HADOOP-15758.
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Resolution: Not A Problem
> Filesystem.get(URI, Configuration, user) API not working with proxy users
> -------------------------------------------------------------------------
>
> Key: HADOOP-15758
> URL: https://issues.apache.org/jira/browse/HADOOP-15758
> Project: Hadoop Common
> Issue Type: Bug
> Affects Versions: 2.6.0, 3.0.0
> Reporter: Hrishikesh Gadre
> Assignee: Hrishikesh Gadre
> Priority: Major
> Attachments: HADOOP-15758-001.patch
>
>
> A user reported that the Filesystem.get API is not working as expected when
> they use the 'FileSystem.get(URI, Configuration, user)' method signature -
> but 'FileSystem.get(URI, Configuration)' works fine. The user is trying to
> use this method signature to mimic proxy user functionality e.g. provide
> ticket cache based kerberos credentials (using KRB5CCNAME env variable) for
> the proxy user and then in the java program pass name of the user to be
> impersonated. The alternative, to use [proxy users
> functionality|https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-common/Superusers.html]
> in Hadoop works as expected.
>
> Since FileSystem.get(URI, Configuration, user) is a public API and it does
> not restrict its usage in this fashion, we should ideally make it work or add
> docs to discourage its usage to implement proxy users.
>
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