2025-06-27 Hyrax Fedora 6 Working Group

Welcome

• Volunteer notetaker: @Nicholas Mark Homenda

Updates:

• Community Performance Testing Update?

  • Community Performance Testing - f6.nuraxPreview

  • @Nicholas Mark Homenda has given access to ~5 people to the tester role

  • @Arran Griffith will send out a reminder

  • Folks from this group will do testing, too

  • Close to having Bulkrax in the Nurax instances, Julie had it partway up locally

    • Then, we can launch Phase 2 of testing

  • Frigg adapter is being worked on (additional connection parameters beyond what was needed for PostGres)

    • Are there institutions poised to test this?

      • IU!

  • Working on 5.2 release- mostly bug fixes

• Migration updates?

  • Finished migration at Emory at beginning of June

  • 2.9 million Fedora objects ~ 34000 Hyrax works

    • Is this number unexpected/unmanageable?

      • No

    • Is this vastly different than number of objects in F4?

      • Unsure, also some different collections available that weren’t in F4

      • F4 Solr could give part of the picture, unsure if it shows proxies, etc.

      • FCR stats call with 1mil+ objects is really slow

        • Query is the one provided in UI

        • Oxford noted it’s still snappy for them

      • @Ben Pennell notes in their Hyrax 4 instance Solr:

        • 2.9 million objects

        • 152114 works

        • 383576 AccessControl

        • 34168 Proxy

        • 230391 FileSet

        • 170924 IndirectContainer

    • Scale of OCFL manifests a concern?

      • If we had our choice, we would’ve structured these as Archival Groups

    • Also a problem for Oxford. Application level knows to ignore, but file system interaction doesn’t

    • Emory attempting to find orphaned objects/resources created and not associated back to parents during large ingest process

  • Tomcat update prompted Fedora reindex, which took 70 hours

    • no idea why Fedora would require that- perhaps a flag is specifying that

    • good to check that fcrepo.rebuild.on.start is turned off, and maybe fcrepo.rebuild.continue

  • Getting ready to launch new app July 8, also upgrading Hyrax 5.0 (pinned to a specific commit) to 5.1

  • Overall, so far, so good

• OCFL export for Fedora Team

  • At Open Repositories 2025 @Dan Field asked if we can get an export from OCFL after ingesting works into Hyrax

  • Probably easier to obtain from local Hyrax installation rather than from OCFL

  • Easier with a single deposit with multiple files attached

What work remains?

• Phase 2 (after Bulkrax)

• Frigg adapter testing

Wrap Up

Next meeting:

• July 25th @ 9am Eastern

Next note taker: