MongoDB 4.2.18-rc0 is released

Product & Driver Announcements Server Releases
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MongoDB 4.2.18-rc0 is out and is ready for testing. This is a release candidate containing only fixes since 4.2.17. The next stable release 4.2.18 will be a recommended upgrade for all 4.2 users.


Fixed in this release:

  • SERVER-61427 Unique index builds can cause a loss of availability during commit due to checking many false duplicates
  • SERVER-56227 Add user-facing command to set allowMigrations to false for a sharded collection
  • SERVER-59226 Deadlock when stepping down with a profile session marked as uninterruptible
  • SERVER-56226 [v4.4] Introduce 'permitMigrations' field on config.collections entry to prevent chunk migrations from committing
  • SERVER-54064 Sessions on arbiters accumulate and cannot be cleared out
4.2 Release Notes | All Issues | Downloads

As always, please let us know of any issues.

-- The MongoDB Team