MariaDB MaxScale 21.06.19 Release Notes

Release 21.06.19 is a GA release.

This document describes the changes in release 21.06.19, when compared to the previous release in the same series.

If you are upgrading from an older major version of MaxScale, please read theupgrading document for this MaxScale version.

For any problems you encounter, please consider submitting a bug report on our Jira.

External CVEs resolved.

• CVE-2024-21538 Fixed by MXS-5478 Container Image vulnerability CVE-2024-21538 (MXS)

Bug fixes

• MXS-5536 Early mismatched responses to session commands do not close connections

• MXS-5529 Session commands with max_slave_connections=0 after switchover do not discard stale connections

• MXS-5527 The "INSERT INTO...RETURNING" syntax breaks causal_reads

• MXS-5519 Documentation regarding mixing of cooperative_monitoring_locks and passive is unclear

• MXS-5508 Relationship selections auto-cleared when creating a new monitor object

• MXS-5507 readwritesplit enables multi-statements regardless of the state of causal_reads

• MXS-5492 idle_session_pool_time=0s does not fairly share connections

• MXS-5488 Need Documentation updates for Maxscale install recommendation

• MXS-5466 MaxCtrl warnings are very verbose

• MXS-5455 Errors during loading of users lack the service name

• MXS-5450 maxctrl list queries fails

• MXS-5449 Encrypted passwords cannot be used with maxctrl

• MXS-5443 Log message: Unknown prepared statement handler given to MaxScale

• MXS-5439 Backend connections with fail with EAGAIN

• MXS-5437 Failed authentication warnings do not mention lack of client-side SSL as the reason of the failure

• MXS-5432 MaxScale 24.02.04 not closing DB Connections properly

• MXS-5419 Duration types that only take seconds return ms as units instead of s

• MXS-5415 retry_failed_reads is not affected by delayed_retry_timeout

• MXS-5403 Debug assertion on very large binary protocol prepared statements

• MXS-5398 Some log messages are not logged when session_trace is used

• MXS-5397 NVL and NVL2 are not detected as builtin functions outside of sql_mode=ORACLE

• MXS-5395 Kafkacdc errors for wrong GTID positions are not clear

• MXS-5382 Errors due to max_connections being exceeded are always fatal errors

Known Issues and Limitations

There are some limitations and known issues within this version of MaxScale. For more information, please refer to the Limitations document.

Packaging

RPM and Debian packages are provided for the supported Linux distributions.

Packages can be downloaded here.

Source Code

The source code of MaxScale is tagged at GitHub with a tag, which is identical with the version of MaxScale. For instance, the tag of version X.Y.Z of MaxScale is maxscale-X.Y.Z. Further, the default branch is always the latest GA version of MaxScale.

The source code is available here.

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