C first choice, E second On Mon, Jun 28, 2021, 8:40 AM Julian Hyde <jhyde.apa...@gmail.com> wrote:
> D > > (2nd choice E if we’re doing ranked-choice voting) > > Julian > > > On Jun 24, 2021, at 12:24 PM, Weston Pace <weston.p...@gmail.com> wrote: > > > > The discussion in [1] led to the following question. Before we > > proceed on a vote it was decided we should do a straw poll to settle > > on an approach (which can then be voted on in a +1/-1 fashion). > > > > --- > > Some date & time libraries have three temporal concepts. For the sake > > of this document we will call them LocalDateTime, ZonedDateTime, and > > Instant. An Instant is a timestamp that has no meaningful reference > > time zone (e.g. events that did not occur on Earth or columns of > > timestamps spanning more than one time zone). For more extensive > > definitions and a discussion of their semantics and uses see [1]. > > Currently Arrow describes how to define two of these three concepts > > and there is no guideline on how to store an Instant (assuming the > > proposal in [2] passes). > > > > > > This proposal states that Arrow should define how to encode an Instant > > into Arrow data. There are several ways this could happen, some which > > change schema.fbs and some which do not. > > --- > > > > For sample arguments (currently grouped as "for changing schema.fbs" > > and "against changing schema.fbs") see [2]. For a detailed definition > > of the terms LocalDateTime, ZonedDateTime, and Instant and a > > discussion of their semantics see [3]. > > > > Options: > > > > A) Do nothing, don’t introduce the nuance of “instants” into Arrow > > B) Do nothing, but update the comments in schema.fbs to acknowledge > > the existence of the concept and explain that implementations are free > > to decide if/how to support the type. > > C) Define timestamp with timezone “UTC” as “instant”. > > D) Add a first class instant type to schema.fbs > > E) Add instant as a canonical extension type > > > > Note: This is just a straw poll and the results will not be binding in > > any way but will help craft a future vote. For example, if the > > plurality of votes goes to C but a majority of votes is spread across > > A & B then some flavor of A/B would likely be pursued. > > > > Vote for as many options as you would like. > > > > I will summarize and send out the results in 72 hours. >
