Ryan Blue created HIVE-12195:
--------------------------------

             Summary: Unknown zones should cause an error instead of silently 
failing
                 Key: HIVE-12195
                 URL: https://issues.apache.org/jira/browse/HIVE-12195
             Project: Hive
          Issue Type: Sub-task
            Reporter: Ryan Blue


Using an unknown time zone with the {{from_utc_timestamp}} or 
{{to_utc_timetamp}} methods returns the time un-adjusted instead of throwing an 
error:

{code}
hive> select from_utc_timestamp('2015-04-11 12:24:34.535', 'panda');
2015-04-11 12:24:34.535
{code}

This should be an error because users may attempt to adjust to valid but 
unknown zones, like PDT or MDT. This would produce incorrect results with no 
warning or error.



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