Date

Notification thread

TODO

https://meet.google.com/mzq-iwcc-xvw

Attendees

  • Jason Gerlowski (Organizer)
  • Parveen Saini
  • Rahul Goswami
  • Anshum Gupta
  • Gus Heck
  • Bryan Jacobowitz
  • Luke Kot-Zaniewski
  • Kevin Liang
  • Jude Muriithi
  • Eric Pugh
  • Houston Putman
  • Adam Quigley
  • Pierre Salagnac
  • David Smiley
  • Carlos Ugarte
  • Andrey Ukhanov
  • Dewane Woodley

Discussion Topics

  • Title: Ranking Drift During Lucene Upgrades (Parveen Saini)
    Description: Short walkthrough of issues we saw during a Solr 5 to 8 migration in a production ads retrieval system. Although queries worked, ranking behavior changed in subtle ways due to scoring semantics and other internal Lucene changes. I’ll share how we detected the drift using side-by-side query replay, candidate overlap checks, and score distribution comparisons. The same approach was later reused during a Solr 8 to 9 migration as well.
    Repo: https://github.com/parveensaini/solr-lucene-migration-correctness.   
  • Discuss 9.11 release (Rahul G)
    • Yes, we should
    • David volunteered to be an RM
    • Number of valuable patches that should be backported
      • Multi-valued vectors
      • Index upgrade patch
    • Are we backporting changes by default?
      • Yes and no
  • LTS versions
    • Discussion around LTS version considerations
  • PR reviews (David)
    • Should we tag people in the reviews?
    • Self reviews are good place to start a conversation
  • V2 APIs (Jason/Eric)
    • There is a feature flag to disable V2
    • Path forward and where to focus our time
      • Cluster/node over core level APIs

Post-Meeting Summary

TODO