canton v2.3.15

Release of Canton 2.3.15

Canton 2.3.15 has been released on July 29, 2023. You can download the Daml Open Source edition from the Daml Connect Github Release Section. The Enterprise edition is available on Artifactory.
Please also consult the full documentation of this release.

Summary

This is a maintenance release of Canton. We recommend users to upgrade to this version in order
to ensure that a participant node does not disconnect from a domain unexpectedly.

Bugfixes

Fixed a bug that disconnects a participant from a domain unexpectedly

Description
: When a participant disconnects and reconnects to a domain without a restart and then experiences a database error for one particular database operation it will disconnect the participant from the domain unexpectedly.

Affected deployments
: All deployments

Affected versions
: Canton v2.1 and later.

Impact
: The participant will disconnect from the domain unexpectedly.

Symptom
: The participant will disconnect with an error SYNC_SERVICE_DOMAIN_DISCONNECTED due to an ApplicationHandlerException.

Workaround
: Restart the participant node.

Likelihood of the bug
: The bug occurs only when a participant disconnects and reconnects to a domain without restart and hits a database error for one particular database operation.

Recommendation
: Upgrade the participants to a Canton version with the bug fix and restart the node.

Compatibility

The following Canton protocol and Ethereum sequencer contract versions are supported:

Dependency	Version
Canton protocol versions	2.0.0, 3.0.0
Ethereum contract versions	1.0.0, 1.0.1

Canton has been tested against the following versions of its dependencies:

Dependency	Version
Java Runtime	OpenJDK 64-Bit Server VM 18.9 (build 11.0.16+8, mixed mode, sharing)
Postgres	postgres (PostgreSQL) 14.8 (Debian 14.8-1.pgdg120+1)
Oracle	19.15.0
Besu	besu/v21.10.9/linux-x86_64/openjdk-java-11
Fabric	2.2.2