[HIVE-21094] Store TIMESTAMP WITH LOCAL TIME ZONE in UTC instead of writer's time zone

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Won't Fix
• Component/s: Hive
• Assignee: Karen Coppage
• Reporter: Karen Coppage
• Created: 07/Jan/19 13:29
• Updated: 28/Feb/19 16:58
• Resolved: 11/Feb/19 13:40

Description

TIMESTAMP WITH LOCAL TIME ZONE (aka TIMESTAMPTZ) is stored in writer's local time, and the writer's zone is stored with it. When reading, the timestamp in reader local time + reader zone is displayed. This is misleading for the user, since it looks like all the data was written in the reader's time zone.

TIMESTAMPTZ should be stored in UTC time and be displayed in reader local time (as it was before) but should not display the reader's time zone.

This was discussed in the community doc Consistent timestamp types in Hadoop SQL engines

Issue Links

• is superceded by: HIVE-21353 Use Instant instead of ZonedDateTime as the internal type for TIMESTAMP WITH LOCAL TIME ZONE