ScyllaDB Open Source Release 2.3.4

The ScyllaDB team announces the release of ScyllaDB Open Source 2.3.4, a bugfix release of the ScyllaDB Open Source 2.3 stable branch. ScyllaDB Open Source Release 2.3.4, like all past and future 2.3.y releases, is backward compatible and supports rolling upgrades.

Note that the latest stable branch of ScyllaDB Open Source is ScyllaDB 3.0; you are encouraged to upgrade to it.

The major fix in this release is for a rare race condition between a schema update (adding or removing a column) and an initiated compaction, which may cause the compaction to write values to the wrong columns. The short time window where this may occur is just after compaction was initiated but before it starts writing to storage. Should the race condition occur, there may be a crash or validation/run-time error on the driver side. #4304

Related links:

Other issues solved in this release:

  • ScyllaDB node crashes upon prepare request with multi-column IN restriction #3692, #3204
  • ScyllaDB Driver: Using ScyllaDB shard aware drivers may cause unbalanced connections, where one shard has tens of thousands of connections, while the others do not, resulting in a temporary slow down #4269