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From "Aaron T. Myers (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-3400) DNs should be able start with jsvc even if security is disabled
Date Thu, 10 May 2012 20:10:50 GMT

     [ https://issues.apache.org/jira/browse/HDFS-3400?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Aaron T. Myers updated HDFS-3400:
---------------------------------

    Attachment: HDFS-3400.patch

Here's a patch which makes it so that DNs will start up even if JSVC is configured properly
and security is disabled via the XML confs. The only things that will cause the DN to not
start are now:

* Security is enabled but the DN is not configured to use low ports.
* JSVC_HOME is configured, but $JSVC_HOME/jsvc is not executable.

No tests are included since security and root access must be available to test this. I tested
it manually by:

# Starting a DN with security disabled, and all security-related env vars set.
# Starting a DN with security enabled, and all security-related env vars set.
# Starting a DN with security disabled, and none of the security-related env vars set.
# Starting a DN with security enabled, and none of the security-related env vars set.
# Starting a DN with security enabled, all of the security-related env vars set, but not configured
with low ports.

The DN now starts properly in the first three cases. It does not start in the last two. This
is the expected behavior after this patch.
                
> DNs should be able start with jsvc even if security is disabled
> ---------------------------------------------------------------
>
>                 Key: HDFS-3400
>                 URL: https://issues.apache.org/jira/browse/HDFS-3400
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: data-node, scripts
>    Affects Versions: 2.0.0
>            Reporter: Aaron T. Myers
>            Assignee: Aaron T. Myers
>         Attachments: HDFS-3400.patch
>
>
> Currently if one tries to start a DN with security disabled (via hadoop.security.authentication
= "simple" in the configs), but JSVC is correctly configured, the DN will refuse to start.

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