Hi Cheng, > Since tablet servers lazily apply config changes, could we provide an RPC call like IsAlterConfigDone to allow users to track the progress?
I've discussed with Jark again, and we agree that this should be implemented in its final form, but not right now. I'll add it to the "Future Work" section of this FIP. Best Hongshun On Fri, Aug 8, 2025 at 10:39 AM Wang Cheng <[email protected]> wrote: > Hi Hongshun, > > > > Since tablet servers lazily apply config changes, could we provide an RPC > call like IsAlterConfigDone to allow users to track the progress? > > Do we have a RESET command to restore the value of a run-time parameter to > the default value? > > I'm still unclear about the need for two distinct implementations for > dynamic server-level and table-level configurations. In modern distributed > databases like PGXL [1] (a distributed PostgreSQL variant), both DDL > operations and SET commands are handled uniformly via a two-phase commit > protocol to avoid any inconsistency problems across all data nodes and > coordinators. > > > > [1] > https://postgres-x2.github.io/presentation_docs/2014-07-PGXC-Implementation/pgxc.pdf > > > > Regards, > Cheng > > > > > > > > > ------------------ Original ------------------ > From: > "dev" > < > [email protected]>; > Date: Thu, Aug 7, 2025 11:51 AM > To: "dev"<[email protected]>; > > Subject: [DISCUSS] FIP-12: Server Dynamic Config > > > > Hi devs, > > I'd like to start a discussion about FIP-12: Server Dynamic Config[1]. > Currently, any changes to the server.yaml configuration in a Fluss cluster > require a full restart of the cluster, which negatively impacts stability > and availability. To improve operational agility and reduce downtime, we > propose introducing dynamic configuration capabilities, enabling runtime > modification of key parameters—such as enabling/disabling lake-streaming > integration features or managing user accounts—without requiring service > interruption. > > The POC[2] code is provided to enable lake format. You can try and give > some advice. > > Best > Hongshun > > > [1] > > https://cwiki.apache.org/confluence/display/FLUSS/FIP-12%3A+Server+Dynamic+Config > [2] https://github.com/loserwang1024/fluss/tree/poc-dymanic-config.
