+1 Kazuaki Ishizaki
"Weston Pace" <weston.p...@gmail.com> wrote on 2021/06/30 18:52:46: > From: "Weston Pace" <weston.p...@gmail.com> > To: dev@arrow.apache.org > Date: 2021/06/30 18:53 > Subject: [EXTERNAL] [VOTE] Arrow should state a convention for > encoding instants as Timestamp with "UTC" as the time zone > > This vote is a result of previous discussion[1][2]. This vote is also > a prerequisite for the PR in [5]. > > --- > 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 [3]. > Currently Arrow describes how to encode two of these three concepts > into a Timestamp column and there is no guideline on how to store an > Instant. > > > This proposal states that Arrow should recommend that instants be encoded > into timestamp columns by setting the timezone string to "UTC". > --- > > For sample arguments (currently grouped as "for changing schema.fbs" > and "against changing schema.fbs") see [4]. For a detailed definition > of the terms LocalDateTime, ZonedDateTime, and Instant and a > discussion of their semantics see [3]. For a straw poll on > possible ways to handle instants see [2]. > > This vote will be open for at least 72 hours. > > [ ] +1 Update schema.fbs to state the above convention > [ ] +0 > [ ] -1 Do not make any change > > [1] INVALID URI REMOVED > u=https-3A__lists.apache.org_thread.html_r8216e5de3efd2935e3907ad9bd20ce07e430952f84de69b36337e5eb-2540-253Cdev.arrow.apache.org-253E&d=DwIBaQ&c=jf_iaSHvJObTbx- > siA1ZOg&r=b70dG_9wpCdZSkBJahHYQ4IwKMdp2hQM29f- > ZCGj9Pg&m=avV0JpLmaymMbxpZiYwNb9Yug7bj3PGiNYiJCM-x3kY&s=Ty-Oq- > Gfuo2KRdogmjFFOLvji5yQ0LrrBZWWO7hDufs&e= > [2] INVALID URI REMOVED > u=https-3A__lists.apache.org_thread.html_r1bdffc76537ae9c12c37396880087fee9c0eec9000bf6ed4c9850c44-2540-253Cdev.arrow.apache.org-253E&d=DwIBaQ&c=jf_iaSHvJObTbx- > siA1ZOg&r=b70dG_9wpCdZSkBJahHYQ4IwKMdp2hQM29f- > ZCGj9Pg&m=avV0JpLmaymMbxpZiYwNb9Yug7bj3PGiNYiJCM- > x3kY&s=NyxlTSPly7kAqwMiuXS7BH0lZkK3W0VmVSvvRF-ANa8&e= > [3] INVALID URI REMOVED > u=https-3A__docs.google.com_document_d_1QDwX4ypfNvESc2ywcT1ygaf2Y1R8SmkpifMV7gpJdBI_edit-3Fusp-3Dsharing&d=DwIBaQ&c=jf_iaSHvJObTbx- > siA1ZOg&r=b70dG_9wpCdZSkBJahHYQ4IwKMdp2hQM29f- > ZCGj9Pg&m=avV0JpLmaymMbxpZiYwNb9Yug7bj3PGiNYiJCM- > x3kY&s=opFrDCQFvlSmY31hxs8MDKLcUe3muSTaNXosFCaPX5U&e= > [4] INVALID URI REMOVED > u=https-3A__docs.google.com_document_d_1xEKRhs-2DGUSMwjMhgmQdnCNMXwZrA10226AcXRoP8g9E_edit-3Fusp-3Dsharing&d=DwIBaQ&c=jf_iaSHvJObTbx- > siA1ZOg&r=b70dG_9wpCdZSkBJahHYQ4IwKMdp2hQM29f- > ZCGj9Pg&m=avV0JpLmaymMbxpZiYwNb9Yug7bj3PGiNYiJCM- > x3kY&s=fIjWMI0tuH57ffsGzpOX85d5Dd7TN4tT_h0cj1elNbw&e= > [5] INVALID URI REMOVED > u=https-3A__github.com_apache_arrow_pull_10629&d=DwIBaQ&c=jf_iaSHvJObTbx- > siA1ZOg&r=b70dG_9wpCdZSkBJahHYQ4IwKMdp2hQM29f- > ZCGj9Pg&m=avV0JpLmaymMbxpZiYwNb9Yug7bj3PGiNYiJCM- > x3kY&s=RQrwm8rHhpbx-6JbTZ4WMVpWGrUIu7Ns7oGrfLMk2uQ&e=
