MongoDB 4.2.9 is released

MongoDB 4.2.9 is out and is ready for production deployment. This release contains only fixes since 4.2.8, and is a recommended upgrade for all 4.2 users.

Fixed in this release:

  • SERVER-44051 getShardDistribution() does not report "Collection XYZ is not sharded" on dropped but previously sharded collections
  • SERVER-45610 Some reads work while system is RECOVERING
  • SERVER-47714 Secondary asserts on system.profile collection with WiredTigerRecordStore::insertRecord 95: Operation not supported
  • SERVER-48067 Reduce memory consumption for unique index builds with large numbers of non-unique keys
  • SERVER-49233 Introduce a flag to toggle the logic for bumping collection's major version during split
  • WT-6480 Fix a bug where files without block modification information were repeatedly copied at each incremental backup

4.2 Release Notes | All Issues | Downloads

As always, please let us know of any issues.

– The MongoDB Team