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Apache Jackrabbit: Board Report January 2024


The Apache Jackrabbit™ content repository is a fully conforming implementation of the Content Repository for Java™ Technology API (JCR, specified in JSR 170 and 283). The Jackrabbit content repository is stable, largely feature complete and actively being maintained.

Jackrabbit Oak is an effort to implement a scalable and performant hierarchical content repository as a modern successor to the Apache Jackrabbit content repository. It is targeted for use as the foundation of modern world-class websites and other demanding content applications. In contrast to its predecessor, Oak does not implement all optional features from the JSR specifications, and it is not a reference implementation.

Project Status:

The project is ongoing with moderate activity.

There are no issues requiring board attention at this time.

Membership Data:

Apache Jackrabbit was founded 2006-03-15 (18 years ago) There are currently 59 committers and 59 PMC members in this project. The Committer-to-PMC ratio is 1:1, because all committers automatically become PMC members.

Community changes, past quarter:

  • Nuno Santos was added to the PMC on 2023-11-14
  • Nuno Santos was added as committer on 2023-11-13

Project Activity:

Apache Jackrabbit Oak receives most attention nowadays. All maintenance branches and the main development branch are continuously seeing moderate to high activity.

Apache Jackrabbit itself is mostly in maintenance mode with most of the work going into bug fixing and tooling. New features are mainly driven by dependencies from Jackrabbit Oak.

In October a significant code contribution to Jackrabbit Oak was made by a non-committer (Lucas Weitzendorf). The contribution adds support for parallel compaction of a segment store.

Throughout the last quarter the indexing component of Jackrabbit Oak has seen a lot of activity. The team has been working on a more efficient way to index large repositories.

Migration to Jakarta APIs saw some progress with good collaboration between different Apache project teams. However, the migration requires many changes while the team also wants to keep modules compatible with the current version of the Servlet API.

In December the classic Jackrabbit code base was migrated from SVN to Git. The only remaining module in SVN is the project website, but there are plans to migrate that as well.

Community Health:

The project is generally healthy with a continuous stream of traffic mostly on JIRA issues and GitHub pull requests reflecting activity of the respective component.

Commit activity is moderate, mirroring the activity on the JIRA issues and the desire of the individual contributors to bring features and improvements in for the next Jackrabbit Oak release.


  • jackrabbit-2.20.12 was released on 2023-09-08
  • jackrabbit-oak-1.22.17 was released on 2023-09-15
  • jackrabbit-2.21.20 was released on 2023-10-11
  • jackrabbit-oak-1.58.0 was released on 2023-10-16
  • jackrabbit-filevault-3.7.2 was released on 2023-11-04
  • jackrabbit-2.20.13 was released on 2023-11-07
  • filevault-package-maven-plugin-1.3.6 was released on 2023-11-16
  • jackrabbit-oak-1.22.18 was released on 2023-12-01
  • jackrabbit-oak-1.60.0 was released on 2023-12-06
  • jackrabbit-2.21.21 was released on 2023-12-12
  • jackrabbit-2.21.22 was released on 2023-12-19

JIRA activity:

  • 140 JIRA tickets created in the last 3 months
  • 131 JIRA tickets closed/resolved in the last 3 months