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Replace Etc/GMT timezones #17848

Open timroes opened 6 years ago

timroes commented 6 years ago

The Etc/GMT+-x timezones are the opposite of what most people might think (also see https://github.com/moment/moment-timezone/issues/167).

After some discussion around this, it seems like we should rather replace them not to confuse users with that behavior.

My suggestion would be adding UTC-x and UTC+x timezones instead. That's possible via the moment.tz.add API.

I think we could even do that change in a minor version, and just convert the users setting to the new timezone (e.g. Etc/GMT+5 → UTC-5, etc.). That way the change would be fully backwards compatible, but we could still already remove the confusing timezones.

marius-dr commented 6 years ago

The change has to be to a fixed timezone like UTC as ETC timezones were used by customers to improve the response times for some ES queries.

elasticmachine commented 2 years ago

Pinging @elastic/kibana-core (Team:Core)

TinaHeiligers commented 1 year ago

We need to investigate if using Etc/GMT timezones is still a problem with ES query response times. There haven't been any more comments or links back to this issue in ~ 1 year and we'd typically close these as stale. However, anything negatively impacting ES query response times could negatively impact Kibana's performance and should be considered a bug.