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From "Chris Nauroth (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-12570) HDFS Secure Mode Documentation updates
Date Thu, 17 Dec 2015 23:31:46 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-12570?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15063081#comment-15063081
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Chris Nauroth commented on HADOOP-12570:
----------------------------------------

Nice improvements.  Thank you, Arpit.

In the references, the first entry can link to HADOOP-4487, which is the original Hadoop security
JIRA with design doc attached.

In HdfsMultiHoming.md, the "Hostname Lookup" link isn't rendering correctly.  There is a missing
underscore.  This would fix it:

{code}
        * [Hostname Lookup](#Hostname_Lookup)
{code}

The descriptions in hdfs-default.xml are nice to have, but I'm concerned that they are not
backwards-compatible.  {{dfs.namenode.kerberos.internal.spnego.principal}} used to default
to using the value of {{dfs.web.authentication.kerberos.principal}}.  That would mean that
if someone had configured {{dfs.web.authentication.kerberos.principal}}, but not {{dfs.namenode.kerberos.internal.spnego.principal}},
then it could have worked before this patch, but it would stop working after this patch.

That probably partly explains the earlier {{SaslDataTransferTestCase}} failures.  I think
if tests need to be changed for this patch, then it's probably a sign that something has gone
wrong.

> HDFS Secure Mode Documentation updates
> --------------------------------------
>
>                 Key: HADOOP-12570
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12570
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: documentation
>    Affects Versions: 2.7.1
>            Reporter: Arpit Agarwal
>            Assignee: Arpit Agarwal
>         Attachments: HDFS-9254.01.patch, HDFS-9254.02.patch, HDFS-9254.03.patch, HDFS-9254.04.patch
>
>
> Some Kerberos configuration parameters are not documented well enough. 



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