[TAJO-1191] Change DateDatum timezone to UTC

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.10.0
• Assignee: Jaewoong Jung
• Reporter: Jaewoong Jung
• Created: 18/Nov/14 07:48
• Updated: 18/Dec/14 16:52
• Resolved: 04/Dec/14 07:14

Description

When DateDatum#plus adds a time value to the self instance, it meaninglessly converts the time value to a local time and then converts the added value back to UTC, which results in error when the user time zone has a negative time offset.

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(Update 12/2/2014)

After some discussions with Hyunsik and Jong-young, we concluded that DateDatum values must be treated as UTC values, not local times. The actual code change is almost the same as I originally intended, but the overall direction of this issue and upcoming ones are focused on aligning Tajo's timezone policy for date/time data types with PostgreSQL's.

Changing the summary accordingly.

Issue Links

• is depended upon by: TAJO-1063 Current_time() always returns UTC time
• is depended upon by: TAJO-1064 The hour values are different between current_time() and extract from current_time()
• relates to: TAJO-1234 Rearrange timezone in date/time types