Release Date: 7 January 2021
Neo4j 4.2.2 is a maintenance release with many important improvements and fixes.


  • Fixes a record format store upgrade issue from standard to aligned format, where the property store wouldn’t be migrated properly
  • Fixes an upgrade issue to high_limit format where some secondary unit record IDs may have ended up on the freelist
  • Enable the jmx endpoint for metrics by default
  • Fixes further array-index-out-of-bounds issues iterating over all index entries in a lucene index during consistency check.
  • Fixes an issue in consistency checker where the checker would throw exception and fail if discovering a uniqueness index w/o any reference to the constraint
  • Fix issue with compiled expressions where an error saying got NO_VALUE instead of expected input.
  • Improved discovery system restart/timeout behaviour when instances are experiencing large Garbage Collection or Virtual Machine pauses.
  • Update jetty to address security vulnerability CVE-2020-27218

Detailed Changes and Docs

For the complete list of all changes, please see the changelog. Look for 4.2 Operations manual here.