Canton 2.7.9

Canton 2.7.9 has been released on March 20, 2024. 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, providing a workaround for a participant crash recovery issue on protocol version 4.

Bugfixes

This release provides a workaround for a specific participant crash recovery issue under load on protocol version 4 triggered by the bug 23-021 (fixed in protocol version 5). The workaround can be enabled for a participant through the following configuration, but should only be done when advised so by Digital Asset: canton.participants.XXX.parameters.disable-duplicate-contract-check = yes.

Compatibility

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

Dependency	Version
Canton protocol versions	3, 4, 5

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

Dependency	Version
Java Runtime	OpenJDK 64-Bit Server VM Zulu11.70+15-CA (build 11.0.22+7-LTS, mixed mode)
Postgres	postgres (PostgreSQL) 14.11 (Debian 14.11-1.pgdg120+2)
Oracle	19.18.0