+1 In <20230628.103017.2111667987485891680....@clear-code.com> "[VOTE][Format][Flight] Result set expiration support" on Wed, 28 Jun 2023 10:30:17 +0900 (JST), Sutou Kouhei <k...@clear-code.com> wrote:
> Hi, > > I would like to propose result set expiration support for > Flight RPC. > > See the following pull request and discussion for details: > > * GH-35500: [C++][Go][Java][FlightRPC] Add support for result set expiration > https://github.com/apache/arrow/pull/36009 > > * [DISCUSS][Format][Flight] Result set expiration support > https://lists.apache.org/thread/48fqd554gkqrrld8k13l3b8trz5gk7ow > > This is based on one of the following proposals: > > [DISCUSS] Flight RPC/Flight SQL/ADBC enhancements > https://lists.apache.org/thread/247z3t06mf132nocngc1jkp3oqglz7jp > > Google Docs: (Arrow ML) Arrow Flight RPC/Flight SQL Proposals > > https://docs.google.com/document/d/1jhPyPZSOo2iy0LqIJVUs9KWPyFULVFJXTILDfkadx2g/edit#heading=h.h2ein4otvhtq > > Summary: > > * Background: Currently, it is undefined whether a client > can call DoGet more than once. Clients may want to retry > requests, and servers may not want to persist a query > result forever. > > * Proposal: Add an expiration time to FlightEndpoint. If > present, clients may assume they can retry DoGet > requests. Otherwise, clients should avoid retrying DoGet > requests. > > NOTE: This proposal is "not" a full retry protocol. > > * Changes: > * Add FlightEndpoint.expiration_time field > > * Add the following pre-defined actions: > * CancelFlightInfo: Asynchronously cancel the execution > of a distributed query. (Replaces the equivalent > Flight SQL action.) > * RenewFlightEndpoint: Request an extension of the > expiration of a FlightEndpoint. > > * This proposal does NOT break a backward > compatibility: > > * Flight RPC: Because clients can ignore > FlightEndpoint.expiration_time. > > * Flight SQL: Because we deprecate existing CancelQuery > action but it still available. > > * The pull request includes reference implementations for > C++, Go and Java. > > > The vote will be open for at least 72 hours. > > [ ] +1 Accept this proposal > [ ] +0 > [ ] -1 Do not accept this proposal because... > > > Thanks, > -- > kou
