[ARROW-835] [Format] Add Timedelta type to describe time intervals

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.14.0
• Component/s: Format
• Labels: columnar-format-1.0 pull-request-available
• Assignee: Micah Kornfield
• Reporter: Jeff Reback
• Created: 16/Apr/17 00:42
• Updated: 20/Feb/20 23:26
• Resolved: 16/May/19 02:39

Description

xref https://github.com/apache/arrow/pull/551 and https://github.com/apache/arrow/pull/551#issuecomment-294325969

this will allow round-tripping of pandas ``Timedelta`` and numpy ``timedelt64[ns]`` types. The will have a similar TimeUnit to TimestampType (s, us, ms, ns). Possible impl include making this pure 64-bit.

Issue Links

• blocks: ARROW-5239 [JS] Add support for interval types in javascript
• blocks: ARROW-2625 [Python] Serialize timedelta64 values from pandas to Arrow interval types
• relates to: ARROW-352 [Format] Interval(DAY_TIME) has no unit
• links to: GitHub Pull Request #3644