HIVE-7365 : Explain authorize for auth2 throws exception (Navis via Thejas Nair)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1611209 13f79535-47bb-0310-9956-ffa450edef68
HIVE-6560: varchar and char types cannot be cast to binary (Chao via Xuefu)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1611212 13f79535-47bb-0310-9956-ffa450edef68