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https://issues.apache.org/jira/browse/MAPREDUCE-4970?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13568338#comment-13568338
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Sandy Ryza commented on MAPREDUCE-4970:
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I propose creating a task-log4j.properties without the SecurityAuth logger, and
passing that instead of the default to the task. This is what MR2 does, with
container-log4j.properties.
> Child tasks (try to) create security audit log files
> ----------------------------------------------------
>
> Key: MAPREDUCE-4970
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4970
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 1.1.1
> Reporter: Sandy Ryza
> Assignee: Sandy Ryza
>
> After HADOOP-8552, MR child tasks will attempt to create security audit log
> files with their user names. On an insecure cluster, this has no effect, but
> on a secure cluster, log4j will try to create log files for tasks with names
> like SecurityAuth-joeuser.log.
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