+1 (non-binding) Best, Xuwei Fu
Sutou Kouhei <k...@clear-code.com> 于2024年12月5日周四 10:58写道： > Hi, > > I would like to propose standardizing how to pas statistics > through the C data interface. > > Motivation: > > * We want to pass not only Apache Arrow data but also > statistics of them through the C data interface for query > planning. > > Approach: > > * Define a standardized schema for statistics. > * Represent statistics as an Apache Arrow array that uses > the schema. > * Pass the statistics Apache Arrow array through the C data > interface like a normal Apache Arrow array. > > Note that we don't define a new interface for statistics. We > just use the existing C data interface. A statistics Apache > Arrow array is passed through a separated API call. > > See also: > > * The discussion of this: > https://lists.apache.org/thread/z0jz2bnv61j7c6lbk7lympdrs49f69cx > * The PR of this proposal that includes the statistics > schema definition: > https://github.com/apache/arrow/pull/43553 > * The preview URL of the PR: > > http://crossbow.voltrondata.com/pr_docs/43553/format/CDataInterfaceStatistics.html > > Note: > > * I implemented this proposal only in C++. The > implementation is already merged into apache/arrow. Should > we have one more implementation like format specification > change? > > http://crossbow.voltrondata.com/pr_docs/43553/format/Changing.html#at-least-two-reference-implementations > > > The vote will be open for at least 72 hours. > > [ ] +1 Accept this proposal > [ ] +0 > [ ] -1 Do not accept this proposal because... > > > Thanks, > -- > kou >
