Leela Krishna created HIVE-17278:

             Summary: Incorrect output timestamp from 
from_utc_timestamp()/to_utc_timestamp when local timezone has DST
                 Key: HIVE-17278
                 URL: https://issues.apache.org/jira/browse/HIVE-17278
             Project: Hive
          Issue Type: Bug
          Components: UDF
    Affects Versions: 2.0.0
            Reporter: Leela Krishna

HIVE-12706 is resolved but there is still a bug in this - from_utc_timestamp() 
is interpreting a GMT timestamp with DST.
HS2 on PST timezone:
GMT timestamp PST timestamp PST 2GMT
2012-03-11 01:30:15.332 2012-03-10 17:30:15.332 2012-03-11 01:30:15.332
2012-03-11 02:30:15.332 2012-03-10 19:30:15.332 2012-03-11 03:30:15.332 (<--- 
We got 1 hour more on GMT)
PSTtimestap is generated using from_utc_timestamp('2012-03-11 02:30:15.332', 
PST2GMT timestamp is generated using 
to_utc_timestamp(from_utc_timestamp('2012-03-11 02:30:15.332', 'PST'), 'PST')

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