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https://issues.apache.org/jira/browse/HADOOP-8008?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tomohiko Kinebuchi updated HADOOP-8008:
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Attachment: HADOOP-8008.txt
added a patch for log4j.properties.
diff of a Wiki page is here:
http://wiki.apache.org/hadoop/HowToConfigure?action=diff&rev2=17&rev1=14
> Document how to change the default loglevels
> --------------------------------------------
>
> Key: HADOOP-8008
> URL: https://issues.apache.org/jira/browse/HADOOP-8008
> Project: Hadoop Common
> Issue Type: Improvement
> Components: documentation
> Reporter: Eli Collins
> Assignee: Tomohiko Kinebuchi
> Labels: newbie
> Attachments: HADOOP-8008.txt
>
>
> The hadoop.root.logger defined in log4j.properties is only used by
> applications. The scripts (bin and daemons) always set it to
> HADOOP_ROOT_LOGGER or "INFO,console" so the installed log4j.properties
> appears to be ignored. The wiki doesn't cover this:
> http://wiki.apache.org/hadoop/HowToConfigure
> We should update the cluster setup docs to indicate how the loglevel is
> configured and also add a comment in log4j.properties that the
> hadoop.root.logger defined there is not used by Hadoop itself, that
> HADOOP_ROOT_LOGGER must be set. This is relevant for commands and daemons,
> though the latter also has daemonlog
> (http://hadoop.apache.org/common/docs/current/commands_manual.html#daemonlog).
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