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From "Aaron T. Myers (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7179) DFSClient should instantiate a KeyProvider, not a KeyProviderCryptoExtension
Date Thu, 02 Oct 2014 01:14:34 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7179?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14155942#comment-14155942
] 

Aaron T. Myers commented on HDFS-7179:
--------------------------------------

Makes sense, and good detective work. 

+1 pending Jenkins, the patch looks good to me. Thanks, Andrew.

> DFSClient should instantiate a KeyProvider, not a KeyProviderCryptoExtension
> ----------------------------------------------------------------------------
>
>                 Key: HDFS-7179
>                 URL: https://issues.apache.org/jira/browse/HDFS-7179
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: encryption
>    Affects Versions: 2.6.0
>            Reporter: Andrew Wang
>            Assignee: Andrew Wang
>            Priority: Critical
>         Attachments: hdfs-7179.001.patch
>
>
> When fetching delegation tokens, we attempt to cast the KeyProvider to a DTExtension.
However, right now the KP is already wrapped into a CryptoExtension, so it will never be a
DTExtension, so we aren't able to get delegation tokens from the KMS.



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