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From "Arun Suresh (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (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 04:59:34 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-11482?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Arun Suresh updated HADOOP-11482:
---------------------------------
    Attachment: HADOOP-11482.2.patch

Thanks for the review [~andrew.wang], Updating patch :
* added more comments
* cut down total sleep time from 20 to 8 secs (We unfortunately need atleast 4 secs to ensure
the rollover signer rolls over atleast twice... and I put in another 4 to be on the safe side)

> 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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