MongoDB 4.2.21 is released

MongoDB 4.2.21 is out and is ready for production deployment. This release contains only fixes since 4.2.20, and is a recommended upgrade for all 4.2 users.


Fixed in this release:

  • SERVER-62272 Adding schema validation to a collection can prevent chunk migrations of failing documents
  • SERVER-66176 [v4.4/v4.2] Minimize work under CollectionCatalog mutex
  • SERVER-61097 SizeStorer can cause deadlocks with cache eviction
  • SERVER-58506 Command to expose settability for Server Parameters
4.2 Release Notes | All Issues | All Downloads

As always, please let us know of any issues.

-- The MongoDB Team