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From "Raghu Angadi (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1185) dynamically change dfs log levels
Date Tue, 30 Oct 2007 01:31:50 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1185?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12538645

Raghu Angadi commented on HADOOP-1185:

Looks good.  

The code sets <form action> to request url that server sees. This won't work if the
server is behind a (server side) proxy. You can just remove 'action' attribute and the browser
defaults to current url (that browser sees, which is what you really want).

> dynamically change dfs log levels
> ---------------------------------
>                 Key: HADOOP-1185
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1185
>             Project: Hadoop
>          Issue Type: Improvement
>          Components: dfs
>            Reporter: dhruba borthakur
>            Assignee: Tsz Wo (Nicholas), SZE
>         Attachments: 1185_20071029b.patch
> I would like to switch on the debug log level of the namenode without restarting it.
This is needed to analyze a production system.
> Can somebody please advice on how to set the loglevel dyncamically on a running namenode?
I was thinking of enhancing dfsadmin to make an RPC to the namenode to set a specified logging
level. But the apache common logging APi does not export an API to change logging levels.

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