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From "Devaraj Das (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2617) Replaced Kerberized SSL for image transfer and fsck with SPNEGO-based solution
Date Wed, 01 Feb 2012 18:25:02 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2617?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13198026#comment-13198026
] 

Devaraj Das commented on HDFS-2617:
-----------------------------------

Jakob, I should have asked this before .. If you consider a situation where there're multiple
clusters some running a version of hadoop with spnego, and some without this (kerbssl), how
would the distcp jobs that copy data between these clusters work? 

I've seen this usecase quite common in Yahoo! (where not all clusters are upgraded in lock-step)
                
> Replaced Kerberized SSL for image transfer and fsck with SPNEGO-based solution
> ------------------------------------------------------------------------------
>
>                 Key: HDFS-2617
>                 URL: https://issues.apache.org/jira/browse/HDFS-2617
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Jakob Homan
>            Assignee: Jakob Homan
>         Attachments: HDFS-2617-a.patch
>
>
> The current approach to secure and authenticate nn web services is based on Kerberized
SSL and was developed when a SPNEGO solution wasn't available. Now that we have one, we can
get rid of the non-standard KSSL and use SPNEGO throughout.  This will simplify setup and
configuration.  Also, Kerberized SSL is a non-standard approach with its own quirks and dark
corners (HDFS-2386).

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