Scylla Open Source 4.0.9

The ScyllaDB team announces Scylla Open Source 4.0.9, a bugfix release of the Scylla 4.0 stable branch. Scylla Open Source 4.0.9, like all past and future 4.x.y releases, is backward compatible and supports rolling upgrades.

Note that the latest Scylla stable branch is Scylla 4.1, and it is highly recommended to upgrade to it.

Related links:

Issues fixed in this release

  • Alternator: a bug in the PutItem implementation with write_islation = always_use_lwt. In case of contention but a successful write, the written data could have not matched the intent. #7218
  • Consistency: nodetool repair may not repair writes which use a new schema with all nodes knowing about the new schema being down #4791
  • Stability: Segfault in evaluating multi-column restrictions #7198
  • Stability: in some rare cases, error recovery from an out-of-memory condition while processing an unpaged query that consumes all of available memory may cause the node to exit #7240
  • Stability: repair may cause stalls under different failure cases #6940 #6975 #6976 #7115
  • Stability: Seastar tasks can lose scheduling_group association when the system is overloaded #7184
  • Stability: Unnecessary LCS Reshape compaction after startup due to overly sensitive SSTable overlap ratio #6938
  • AWS: update enhanced networking supported instance list #6991

23 Sep 2020