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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6408) Add a /conf servlet to dump running configuration
Date Tue, 22 Dec 2009 14:04:29 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6408?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12793620#action_12793620
] 

Steve Loughran commented on HADOOP-6408:
----------------------------------------

Servlet serialization is a funny, from the world of shared-state front-end machines; servlet
state can be pushed into some common space so the same servlet re-used. Normally it exists
to stop dynamic webapp reload working under Tomcat and friends.

Given that configurations don't normally contain security-sensitive data, we could just ignore
the problem here, or possibly consider adding the option to disable this servlet if you really
don't want it. That's much simpler to handle than filtering content.

> Add a /conf servlet to dump running configuration
> -------------------------------------------------
>
>                 Key: HADOOP-6408
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6408
>             Project: Hadoop Common
>          Issue Type: New Feature
>    Affects Versions: 0.22.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>             Fix For: 0.22.0
>
>         Attachments: hadoop-6408.txt, hadoop-6408.txt, hadoop-6408.txt, hadoop-6408.txt
>
>
> HADOOP-6184 added a command line flag to dump the running configuration. It would be
great for cluster troubleshooting to provide access to this as a servlet, preferably in both
JSON and XML formats. But really, any format would be better than nothing. This should/could
go into all of the daemons.

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