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From "Andrew Wang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7179) DFSClient should instantiate a KeyProvider, not a KeyProviderCryptoExtension
Date Thu, 02 Oct 2014 20:48:35 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7179?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14157151#comment-14157151
] 

Andrew Wang commented on HDFS-7179:
-----------------------------------

Even though the ulimit has gone up, we're still hitting strange file descriptor limits :(

{noformat}
java.io.IOException: Cannot run program "du": java.io.IOException: error=24, Too many open
files
{noformat}

These unit test failures look unrelated, going to commit based on ATM's +1.

> 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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