+1, I'm really interested in the goals of this CEP and would like to help contribute in any way that I can (review, testing, etc.).
Thanks, Andy On Mon, Sep 28, 2026, at 8:40 PM, Chris Lohfink wrote: > I'd like to call a vote on CEP-66: Zero-copy SSTable splitting. > > The proposal splits eligible compressed SSTables by reusing their > encoded compression chunks and rebuilding the child components, > avoiding a row rewrite. It starts with an opt-in sstablesplit > --zero-copy mode for split tool and BIG-format SSTables on Cassandra > 7.0/trunk. Reflinks provide an additional optimization where supported; > otherwise, Cassandra copies the encoded bytes. Follow-up incremental > phases cover Spark support, anticompaction, BTI, 2i, and partial-range > zero copy streaming. > > The discussion covered the new SSTable format, compatibility, reflink > complexity, and digest generation. The proposal and discussion are here: > > Proposal: > https://cwiki.apache.org/confluence/spaces/CASSANDRA/pages/451972773/draft+CEP-66+Zero-copy+SSTable+splitting > > > Discussion: > https://lists.apache.org/thread/sjqbv0m451kqopms8whymgwbrr2v16tw > > Please cast your vote in this thread. The vote will remain open for at > least 72 hours, longer if needed. Per the CEP process, adoption > requires three binding +1 votes and no binding vetoes. > > Thanks, > Chris
