question: gets non-null user name as per the hadoop viewpoint . concode_field_sep String equalityKey concode_elem_sep String usr concode_elem_sep Configuration cfg concode_elem_sep URI uri concode_field_sep HadoopLazyConcurrentMap<FsCacheKey,FileSystem> createHadoopLazyConcurrentMap concode_elem_sep Configuration configuration concode_elem_sep int hashCode concode_elem_sep boolean equals concode_elem_sep FileSystem fileSystemForMrUserWithCaching concode_elem_sep URI fixUri concode_elem_sep String toString concode_elem_sep String createEqualityKey concode_elem_sep URI uri concode_elem_sep String user
target: String function ( Configuration arg0 ) { String loc0 = arg0 . get ( MRJobConfig . USER_NAME ) ; if ( loc0 == null ) loc0 = IgniteHadoopFileSystem . getFsHadoopUser ( ) ; return loc0 ; }