ScyllaDB Open Source Release 2.3.4

ScyllaDB Open Source 2.3.4 is a bugfix release that addresses a critical race condition between schema updates and compaction processes, which could cause data to be written to incorrect columns, potentially leading to crashes or errors. The release is backward compatible, supports rolling upgrades, and is part of the 2.3 stable branch, although users are encouraged to upgrade to the latest stable version, ScyllaDB 3.0. Additional issues resolved include crashes related to multi-column IN restrictions and connection imbalances caused by shard-aware drivers. The release is available through Docker and binary packages, and users are advised to report any encountered problems.