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https://issues.apache.org/jira/browse/HADOOP-10015?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Haohui Mai updated HADOOP-10015:
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Attachment: HADOOP-10015.001.patch
> UserGroupInformation prints out excessive ERROR warnings
> --------------------------------------------------------
>
> Key: HADOOP-10015
> URL: https://issues.apache.org/jira/browse/HADOOP-10015
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Haohui Mai
> Assignee: Haohui Mai
> Attachments: HADOOP-10015.000.patch, HADOOP-10015.001.patch
>
>
> In UserGroupInformation::doAs(), it prints out a log at ERROR level whenever
> it catches an exception.
> However, in some cases IOExceptions are expected -- For example, the upp
> (e.g., calling exists() in filesystem). As a result, these error logs are
> benign but they are printed at the ERROR level, which confuses the operators.
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