Archivematica 1.16.0 and Storage Service 0.22.0 release notes
Home > Release Notes > Archivematica 1.16.0 and Storage Service 0.22.0
Release date: TBD
Environments
Please see the installation instructions.
Archivematica 1.16.0 and Storage Service 0.22.0 have been tested in the following environments:
- Ubuntu 22.04 64-bit Server Edition
- Rocky Linux 9 x86_64
For development purposes, most of our developers prefer to use Docker containers. These and all above environments are linked from the installation instructions above.
Added
Changed
PRONOM v.116
As of this Archivematica release, we are up to date to PRONOM v. 116.
Fixed
Update MCPClient forking model
Archivematica 1.16.0 introduces a new prefork execution model in MCPClient based on a process pool. MCPClient workers are automatically restarted to free resources and will reuse database connections when possible.
The following new settings were added to the MCPClient service:
ARCHIVEMATICA_MCPCLIENT_WORKERSdefines the number of MCPClient workers. If undefined, it defaults to the number of CPUs available on the machine. Only client modules that defineconcurrent_instanceswill perform concurrent execution of tasks (e.g. identify_file_format).
ARCHIVEMATICA_MCPCLIENT_MAX_TASKS_PER_CHILDdefines the maximum number of tasks a worker can execute before it's replaced by a new process in order to free resources.
ARCHIVEMATICA_MCPCLIENT_MCPCLIENT_PROMETHEUS_DETAILED_METRICSindicates that detailed metrics should be sent to Prometheus. With large transfers this might affect performance of the local storage in Prometheus and slow down its threads in Archivematica.
See the MCPClient Configuration page.
DIPs are cleaned from watched directories
Duracloud spaces retry chunk downloads
Thank you Carlos Mc Gregor for contributing this fix!
Please see the 1.16.0 milestone in GitHub for all issues addressed in this release: https://github.com/archivematica/Issues/milestone/24?closed=1.