Dear Andrew, Increase the log level of this class to DEBUG. Then you should be able to see what's going on.
Best regards, Jens Am Montag, 23. Februar 2015 schrieb Andrew Johnson : > Hey everyone, > > I am seeing an intermittent issue with the Namenode looking up the groups > for a given user. We are using JniBasedUnixGroupsMapping. > > I see messages like the following in the namenode logs: > > 015-02-23 15:42:37,184 WARN > org.apache.hadoop.security.UserGroupInformation: No groups available for > user <username> > >
