Hi! Thank you, fixed - now the topic is "Apache Cloudberry: gathering statistics for queries executed by multiple PostgreSQL instances." )
Also thank you for the link to the assistance service, I'll keep him in mind . On Thu, Apr 16, 2026 at 9:57 AM Dianjin Wang <[email protected]> wrote: > Hi Leonid, > > I took a look at your second proposal, “Outside of pg_stat_statements: > if your query is executed by multiple PostgreSQL instances” — it’s a > very practical and interesting topic. > > One small suggestion: since Community Over Code is strongly > Apache-focused, do you think it might be possible to create some > connection to Apache projects (e.g., Cloudberry or the broader Apache > ecosystem)? Even a light touch there could help strengthen its fit and > improve acceptance chances. Just a thought! > > Also, in case it’s helpful — the event provides Travel Assistance: > https://tac.apache.org/events/current.html. If other community members > want to get travel assistance, can apply for it. > > I'm also preparing a talk and will share it soon. > > Best, > Dianjin Wang > > On Mon, Mar 30, 2026 at 7:07 PM Leonid Borchuk <[email protected]> > wrote: > > > > Hi! > > > > Thank you, I opened a proposal for 2 sessions: > > > > We tried DPDK for network but failed. Why and what we have learned from > > this? > > Description > > > > The CPU frequency is practically not growing, but everything else: > > network/ssd/ data volumes are growing exponentially. This poses new > > challenges for the databases: reduce CPU costs for working with the > > infrastructure. The bottleneck of MPP systems is the network. What > happens > > if the network in Greenplum becomes 10 times faster? We accelerated 5 > > times. Then we tried DPDK, but realized that we couldn't move forward > > without serious core refinement. I would share what happened to the > > database when the network accelerated 5 times. And also why DPDK didn't > > start. > > What conclusions have we learned and what are we planning to do next > > (spoiler: all new changes will be in Apache Cloudberry). > > Session format > > > > Session > > Track > > > > OLAP & Data Analysis > > Level > > > > Intermediate > > Language > > > > English > > > > Outside of pg_stat_statements: if your query is executed by multiple > > PostgreSQL instances > > Description > > > > Let's say you have several PostgreSQL instances, they all execute a > single > > query, and you want to collect general statistics on how many resources > > were spent on executing this query. The built-in pg_stat_statements > module > > is no longer suitable here, since it works within the same database. I > will > > present a solution with a similar central idea — collecting data through > > query execution hooks, but instead of storing it in PostgreSQL shared > > memory, we send raw data to an external agent process. This process is > > responsible for aggregating metrics, providing a unified picture across > all > > instances, as well as additional functions, such as the forced > termination > > of problematic sessions, while not limited to PostgreSQL: the solution > can > > collect data from other system components. I will talk about > architecture, > > product tasks, and share links to the repositories (Apache 2.0 License) > > with the code. > > Session format > > > > Session > > Track > > > > Observability > > Level > > > > Advanced > > Language > > > > English > > > > On Mon, Mar 23, 2026 at 4:02 AM Dianjin Wang <[email protected]> > wrote: > > > > > Hi all, > > > > > > I’d like to share that the Call for Proposals (CFP) for Community Over > > > Code Asia 2026 is now open: > > > https://sessionize.com/community-over-code-asia-2026/ > > > > > > Community Over Code Asia 2026 will be held in Beijing from August 7 to > 9, > > > 2026. > > > > > > I’d like to encourage everyone in the Apache Cloudberry community to > > > consider submitting talk proposals. There are multiple tracks that > > > could be a good fit for Cloudberry-related topics, including for > > > example: > > > > > > - Data + AI > > > - Data Lake & Data Warehouse > > > - Incubator > > > - OLAP & Data Analysis > > > > > > You can also find the full list of tracks here: > > > https://asia.communityovercode.org/tracks.html > > > > > > This is a great opportunity to share our technical progress, community > > > journey, user stories, ecosystem work, and ideas around Apache > > > Cloudberry with the broader open source community. > > > > > > The CFP deadline is 21 April 2026, so now is a good time to start > > > preparing proposals. > > > > > > If you already have a topic in mind but would like help refining the > > > title, abstract, or track selection, feel free to start a discussion > > > on the mailing list. > > > > > > Best, > > > Dianjin Wang > > > > > > --------------------------------------------------------------------- > > > To unsubscribe, e-mail: [email protected] > > > For additional commands, e-mail: [email protected] > > > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > >
