[KYLIN-3069] Add proper time zone support to the WebUI instead of GMT/PST kludge

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: v2.2.0
• Fix Version/s: v2.3.0
• Component/s: Web
• Environment: HDP 2.5.3, Kylin 2.2.0
• Assignee: peng.jianhua
• Reporter: Vsevolod Ostapenko
• Created: 29/Nov/17 22:20
• Updated: 02/Apr/18 13:42
• Resolved: 05/Feb/18 08:21

Description

Time zone handling logic in the WebUI is a kludge, coded to parse only "GMT-N" time zone specifications and defaulting to PST, if parsing is not successful (kylin/webapp/app/js/filters/filter.js)

Integrating moment and moment time zone (http://momentjs.com/timezone/docs/) into the product, would allow correct time zone handling.
For the users who happen to reside in the geographical locations that do observe day light savings time, usage of GMT-N format is very inconvenient and info reported by the UI in various places is perplexing.
Needless to say that the GMT moniker itself is long deprecated.