Metacat 3.1.0 Release

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Jing Tao

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Dec 20, 2024, 12:28:46 PM12/20/24

to ESS-DIVE, eml-dev, devel...@dataone.org

We are pleased to announce a new release of Metacat (3.1.0), a turnkey data repository software platform used across the earth science community. In summary:

This release continues to build upon Metacat v3.0.0’s support for the increasingly large datasets being collected by the scientific community.

If you are upgrading an existing Metacat installation, therefore, it is essential that you read the Release Notes (especially the section on Upgrading an Existing Metacat Installation) and the updated Administrator’s Guide.

For new installations, see the Installation notes and the Administrator’s Guide.

The new release of Metacat can be downloaded from: https://github.com/NCEAS/metacat/releases/tag/3.1.0

Metacat can also be deployed on Kubernetes, using a Helm chart (note this is a beta feature). See the helm README

New Features

Here is a selection of new features in this release. Consult the Release Notes for the full list:

Metacat uses the DataONE hashstore-java hash-based storage library.
Existing stored files are seamlessly migrated to the new storage system.
Setup no longer requires an auth token in order to index private datasets, thus simplifying installation.
Upgraded datacite version to 4.5 from 4.3 for EZID DOI service (Issue #2005)
Docker changes:

Updated base image to tomcat:9.0.96-jre17-temurin-jammy (from 9.0.82)
Run container as tomcat user & group, with uid 59997 and gid 59997

Upgrades and Bug Fixes:

Bump com.rabbitmq:amqp-client from 5.14.2 to 5.21.0 (Issue #1922)
Add indexes to the access_log table (Issue #1965)
Optimize the query to get log record (Issue #1976)

About Metacat

Metacat (https://github.com/NCEAS/metacat) provides a standardized but customizable platform for preserving data and metadata in many formats. It helps scientists find, understand and effectively use data sets they manage. or that have been created by others. Hundreds of thousands of data sets are currently documented in a standardized way and stored in Metacat systems, enabling the scientific community to access a vast array of scientific data that can be easily searched, compared, merged, or adapted for other purposes due to its thorough and consistent description.

Metacat is compliant with the DataONE network, making it easy for organizations to participate in the global DataONE data federation, and integrates with ORCiD and DOI identifier systems. It also supports the customizable MetacatUI client-side application for searching and browsing data in Metacat and DataONE, creating an easily-deployed system with advanced search and discovery features pre-installed.

The open source Metacat system is maintained by NCEAS (https://nceas.ucsb.edu) and DataONE (https://dataone.org), and is used by repositories worldwide to manage data collections. We're an open community, collaborating on the shared development of this common data platform, to improve efficiency and sustainability in the open data ecosystem. We welcome all types of contributions, from feedback on features and bugs, to documentation, code, and everything in between. Please join us!

We hope that this software is useful to you. We welcome feedback and comments that will further improve the application. Please submit bugs and problems through our bug tracking system (https://github.com/NCEAS/metacat/issues) and send general feedback to 'metac...@ecoinformatics.org'.