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https://issues.apache.org/jira/browse/HADOOP-6770?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Owen O'Malley resolved HADOOP-6770.
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Resolution: Won't Fix
The code no longer uses the external 'whoami' command. It uses the JAAS
interface.
> chang UnixUserGroupInformation to use "user.name" instead of whoami
> -------------------------------------------------------------------
>
> Key: HADOOP-6770
> URL: https://issues.apache.org/jira/browse/HADOOP-6770
> Project: Hadoop Common
> Issue Type: Improvement
> Affects Versions: 0.20.1
> Reporter: sam rash
>
> at present, we fork and use whoami to get the current username. we can avoid
> the fork(which can be slow) and user System.getProperty("user.name") which is
> set by the jvm
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