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https://issues.apache.org/jira/browse/HDFS-7179?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14156072#comment-14156072
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Andrew Wang commented on HDFS-7179:
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Build passes for me locally, kicking this again...
> 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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