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Apache Jackrabbit: Board Report June 2023


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 (17 years ago) There are currently 59 committers and 59 PMC members in this project. The Committer-to-PMC ratio is 1:1.

Community changes, past quarter:

  • Rishabh Daim was added to the PMC on 2023-04-06
  • Rishabh Daim was added as committer on 2023-04-06

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.

The project team started to replace the plain Guava dependency in Jackrabbit Oak with a shaded version. This allows us to more easily update Guava without interfering with users of Jackrabbit Oak.

Maintenance of Jackrabbit 2.16.x and Jackrabbit Oak 1.8.x ended in May. Announcements have been sent to inform users to migrate to more recent versions.

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.

Concerns were raised on the private email list about lack of or little constructive participation by Jackrabbit committers on the FileVault subproject. There is a split within the committers. Some would like to actively evolve FileVault, while others are mostly happy with the status quo and prefer fewer changes.

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-oak-1.50.0 was released on 2023-03-23
  • jackrabbit-2.21.16 was released on 2023-04-05
  • jackrabbit-oak-1.22.15 was released on 2023-04-07
  • jackrabbit-2.20.10 was released on 2023-05-08
  • jackrabbit-oak-1.52.0 was released on 2023-05-15

JIRA activity:

  • 167 JIRA tickets created in the last 3 months
  • 134 JIRA tickets closed/resolved in the last 3 months