Hi Luke and community! Luke, thank you for being proactive and caring about this topic!
In the meantime we have been keeping ourselves busy pushing our implementation of KIP-1150 to production to validate our assumptions and confirm its strengths while discovering its weaknesses. Now, after gathering some experience running it, we are (as I'm writing this, gathered in the same room) working on an improved proposal for KIP-1150 that also addresses the concerns from the community. We expect to share the updated KIP in the next couple of weeks. We apologize for the recent period of silence and are committed to more regular communication as we move forward. Best, On Tue, Aug 5, 2025 at 10:31 AM Luke Chen <show...@gmail.com> wrote: > Hi all, > > The Kafka community is currently seeing an unprecedented situation with > three KIPs (KIP-1150, IP-1176, KIP-1183) simultaneously addressing the same > challenge of high replication costs when running Kafka across multiple > cloud availability zones. Each KIP offers a different solution to this > issue. While diversity of innovative ideas is a key strength of open-source > projects, it creates a burden for reviewers and users who must compare and > comment on multiple proposals simultaneously. Furthermore, discussion > around the three KIPs has stalled for over two months now. This could be > due to the authors being hesitant to proceed due to the existence of > alternative, potentially conflicting, solutions. Addressing replication > cost is a key concern of Kafka’s userbase and we should try to move the > conversation forward if we can. > > From what I understand, these three KIPs are not mutually exclusive. But > adopting all three KIPs in the community might not be what we expect. Thus, > I would like to *start a discussion on how we could move the conversation > forward*. > > To save time for the KIP readers/reviewers, I have created this document > < > https://cwiki.apache.org/confluence/display/KAFKA/The+Path+Forward+for+Saving+Cross-AZ+Replication+Costs+KIPs > >[1] > to help summarize each of the KIPs and describe their current status. *Hope > to get some suggestions/feedback from the community*. > > > [1] > > https://cwiki.apache.org/confluence/display/KAFKA/The+Path+Forward+for+Saving+Cross-AZ+Replication+Costs+KIPs > > KIP-1150: > > https://cwiki.apache.org/confluence/display/KAFKA/KIP-1150%3A+Diskless+Topics > KIP-1176 > <https://cwiki.apache.org/confluence/display/KAFKA/KIP-1150%3A+Diskless+TopicsKIP-1176> > : > > https://cwiki.apache.org/confluence/display/KAFKA/KIP-1176%3A+Tiered+Storage+for+Active+Log+Segment > KIP-1183 > <https://cwiki.apache.org/confluence/display/KAFKA/KIP-1176%3A+Tiered+Storage+for+Active+Log+SegmentKIP-1183> > : > > https://cwiki.apache.org/confluence/display/KAFKA/KIP-1183%3A+Unified+Shared+Storage > > > Thank you. > Luke > -- [image: Aiven] <https://www.aiven.io> *Josep Prat* Sr. Engineering Director, Streaming Services, *Aiven* josep.p...@aiven.io | +491715557497 aiven.io <https://www.aiven.io> | <https://www.facebook.com/aivencloud> <https://www.linkedin.com/company/aiven/> <https://twitter.com/aiven_io> *Aiven Deutschland GmbH* Alexanderufer 3-7, 10117 Berlin Geschäftsführer: Oskari Saarenmaa, Hannu Valtonen, Kenneth Chen Amtsgericht Charlottenburg, HRB 209739 B
