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From "Arun Suresh (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-11482) Clients that cache instances of KMSClientProvider fail Authentication when "addDelegationTokens()" method is called after authentication token validity expires
Date Fri, 23 Jan 2015 06:36:34 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-11482?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14288860#comment-14288860
] 

Arun Suresh commented on HADOOP-11482:
--------------------------------------

The test failure looks unrelated...

> Clients that cache instances of KMSClientProvider fail Authentication when "addDelegationTokens()"
method is called after authentication token validity expires 
> ----------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-11482
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11482
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 2.6.0
>            Reporter: Arun Suresh
>            Assignee: Arun Suresh
>         Attachments: HADOOP-11482.1.patch, HADOOP-11482.2.patch
>
>
> Long Living clients of HDFS (For eg. OOZIE) use cached DFSClients which in turn use a
cached KMSClientProvider to talk to KMS.
> Before an MR Job is run, the job client calls the {{DFClient.addDelegationTokens()}}
method which calls {{addDelegationTokens()}} on the {{KMSClientProvider}} to get any delegation
token associated to the user.
> Unfortunately, this call uses a cached {{DelegationTokenAuthenticationURL.Token}} instance
which can cause the {{SignerSecretProvider}} implementation of the {{AuthenticationFilter}}
at the KMS Server end to fail validation. Which results in the MR job itself failing.



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