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From "Daryn Sharp (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2473) Fetching tokens from insecure cluster throws NPEs
Date Fri, 25 May 2012 13:52:24 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13283419#comment-13283419
] 

Daryn Sharp commented on HDFS-2473:
-----------------------------------

Tom White recently added some really neat token identifier decoding to make a stringified
token display more info.  Please replace {{+ DelegationTokenIdentifier.stringifyToken(token)}}
with {{+ token}} so we can take advantage of this feature.

                
> Fetching tokens from insecure cluster throws NPEs
> -------------------------------------------------
>
>                 Key: HDFS-2473
>                 URL: https://issues.apache.org/jira/browse/HDFS-2473
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: hdfs client
>    Affects Versions: 0.20.205.0
>            Reporter: Daryn Sharp
>            Assignee: Jakob Homan
>            Priority: Critical
>         Attachments: HDFS-2473-1.0.2.patch, HDFS-2473-trunk.patch
>
>
> Retrieving tokens from an insecure cluster throws an NPE.  This prevents copies from
insecure to secure clusters.  The problem is in {{DFSClient.getDelegationToken()}}.  It attempts
to set the service and log the token w/o a null check.
> FetchDT will also throw exceptions when fetching tokens from an insecure cluster.

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