Release notes
Release notes
This page contains the release notes for KurrentDB v26.0.
26.0.1
6 February 2026
Fixed "Data sizes violation" error (PR #5492)
Under certain conditions a follower or Read Only Replica could fail to join a cluster with a "Data sizes violation" error.
This fix resolves the error condition and allows the node to join the cluster. There is no risk to the integrity of the data.
Fixed GZIP compression compatibility for empty responses (PR #5480)
Empty payloads now use stored blocks instead of static Huffman blocks to fix DEFLATE errors with strict GZIP parsers.
26.0.0
16 January 2026
What's new
Find out what's new in this release.
Projections: Fixed wake-up race condition (PR #5428)
When writing empty transactions (write requests with 0 events in) a race condition existed where a projection that had reached the end of its input stream and stopped might not detect the addition of a new event. The new event could remain unprocessed until another event is written to any stream. Subsequent new events written to any stream would allow the projection to continue and process any outstanding events correctly. Writing empty transactions is uncommon but supported by the database.