Steve Loughran created HADOOP-12840:
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Summary: UGI to log@ debug stack traces when failing to find
groups for a user
Key: HADOOP-12840
URL: https://issues.apache.org/jira/browse/HADOOP-12840
Project: Hadoop Common
Issue Type: Sub-task
Components: security
Affects Versions: 2.8.0
Reporter: Steve Loughran
Priority: Minor
If {{UGI.getGroupNames()}} catches an IOE raised by
{{groups.getGroups(getShortUserName())}} then it simply logs @ debug "No groups
available for user". The text from the caught exception and stack trace are not
printed.
One IOException raised is the explicit "user not in groups" exception, but
there could be other causes too —if that happens the entire problem will be
missed.
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