Version End of Life. 15 Aug 2024
Release 6.1.21 contains a number of critical bug fixes and improvements.
The following changes have been made to Tungsten Cluster and may affect existing scripts and integration tools. Any scripts or environment which make use of these tools should check and update for the new configuration:
The tungsten_skip_all command (along with alias tungsten_skip_seqno) now shows the full pendingExceptionMessage instead of just pendingError, and the
Morechoice shows the pendingErrorEventId and the pendingError.Issues: CT-2030
Enabling a custom backup script does not require it to be made the default option anymore, i.e. Setting
--repl-backup-methodto the custom backup script is not required anymore.Issues: CT-2039
No longer using connector graceful-stop together with
systemdfor upgrades. The underlying change of binary confuses systemd scripts.Issues: CT-2113
The following issues are known within this release but not considered critical, nor impact the operation of Tungsten Cluster. They will be addressed in a subsequent patch release.
Note, this bug only affects this release, v6.1.21
Each
"SET xxx"statement issued when in proxy mode is being logged. On top of polluting the logs, this extra logging can overwhelm the connector, making it slow to respond and have client threads pile up, up to the point where that could exhaust memoryIf using Proxy mode, it is advised to NOT install this release, and instead use either version 6.1.20 or 6.1.22
Issues: CT-2165(ki)
Improvements, new features and functionality
Improved smart scale handling of session and global changes so they're all played against connected replica or in case of
reconnection. As an example, SET SESSION TRANSACTION READ ONLY will be sent to both primary and replica
connections so that a subsequent SELECT @@SESSION.transaction_isolation will return the expected value,
even if executed on a replica.
Issues: CT-1600