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https://issues.apache.org/jira/browse/HADOOP-1185?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tsz Wo (Nicholas), SZE updated HADOOP-1185:
-------------------------------------------

    Component/s:     (was: dfs)
                 util
    Description: 
I would like to switch on the debug log level of the namenode (or other 
components) 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.

  was:
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.

        Summary: dynamically change log levels  (was: dynamically change dfs 
log levels)

Edited the title and the description since the patch is working for all system 
components using StatusHttpServer.

> dynamically change log levels
> -----------------------------
>
>                 Key: HADOOP-1185
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1185
>             Project: Hadoop
>          Issue Type: Improvement
>          Components: util
>            Reporter: dhruba borthakur
>            Assignee: Tsz Wo (Nicholas), SZE
>         Attachments: 1185_20071031.patch
>
>
> I would like to switch on the debug log level of the namenode (or other 
> components) 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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