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https://issues.apache.org/jira/browse/HADOOP-7984?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14134660#comment-14134660
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Allen Wittenauer commented on HADOOP-7984:
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Also, wrt my question, this patch opts to leave the setting in _OPTS alone.
> Add hadoop command verbose and debug options
> --------------------------------------------
>
> Key: HADOOP-7984
> URL: https://issues.apache.org/jira/browse/HADOOP-7984
> Project: Hadoop Common
> Issue Type: New Feature
> Components: scripts
> Reporter: Eli Collins
> Assignee: Allen Wittenauer
> Priority: Minor
> Labels: newbie
> Attachments: HADOOP-7984.patch
>
>
> It would be helpful if bin/hadoop had verbose and debug flags. Currently
> users need to set an env variable or prefix the command (eg
> "HADOOP_ROOT_LOGGER=DEBUG,console hadoop distcp") which isn't very user
> friendly. We currently log INFO by default. How about we only log ERROR and
> WARN by default, then -verbose triggers INFO and -debug triggers DEBUG?
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