[RELEASE] ScyllaDB 5.2 RC4

Release Notes
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The Scylla team is pleased to announce ScyllaDB Open Source 5.2 RC4, a Release Candidate for Scylla Open Source 5.2 minor release.

We encourage you to run ScyllaDB 5.2 release candidates on your test environments; this will help ensure that an upgrade to ScyllaDB 5.2 General Availability will proceed smoothly with your workload. Use the release candidate with caution; RC4 is not production-ready yet. You can help stabilize Scylla Open Source 5.2 by reporting bugs here.

Only the last two minor releases of the ScyllaDB Open Source project are supported. Once Scylla Open Source 5.2 is officially released, ScyllaDB Open Source 5.2 and 5.1 will be supported, and ScyllaDB 5.0 will be retired.

For a complete description of ScyllaDB 5.2 see https://forum.scylladb.com/t/release-scylla-5-2-rc1/330.

Related Links

Updates and bug fixes since 5.2 RC3 (not including tests, docs updates)

  • Stability: Bootstrap fails during replace operation while starting “off-strategy compaction”. Huge amount of “Error applying view update” errors were received #12693. The cause is commit “repair: Reduce repair reader eviction with diff shard count” introduced in 5.2
  • Tools: cassandra-stress with -log hdrfile options failed with error java.lang.NoClassDefFoundError: javax/xml/bind/DatatypeConverter #13287. Root cause was the hdrhistogram Java lib used; fixed by moving from 2.1.9 to 2.1.12
  • Stability: Following an interrupted decommission rebuild fails on the target node #11507. Root cause was in the Seastar library, and fixed by seastar#1500.
  • Streaming: stale entries in system_distributed.view_build_status causes unnecessary view building during streaming #11905