Release Date: 16 June 2016

Neo4j 2.2.10 is a maintenance release, with critical improvements.


  • Fix for rare permanent self-deadlocks in the Enterprise lock manager and fix deadlock caused by different lock ordering on nodes for relationships
  • Fix issue with relationship group type overflow
  • Fix issue where some properties could get dropped during large imports and fix concurrency errors on deleting nodes and relationships
  • Debian package allows behaviour on shutdown to be configured and NEO4J_ULIMIT_NOFILE is now respected on Debian package service restart

Detailed Changes

For the complete list of all changes, please see the changelog.


All Neo4j users are recommended to upgrade to this release. Upgrading to Neo4j 2.2 (from Neo4j 2.1 or earlier) requires a migration to the on-disk store and can not be reversed. Please ensure you have a valid backup before proceeding. Production users of Neo4j 2.1, or earlier, should note that there will be configuration changes required and that applications will need to be updated to support authentication of database requests. Please see our Upgrading to Neo4j 2.2 FAQ for further details.

(Note: Neo4j 1.9 users may also upgrade directly to this release, and are recommended to do so carefully. We strongly encourage verifying the syntax and validating all responses from your Cypher scripts, REST calls, and Java code before upgrading any production system. For information about upgrading from Neo4j 1.9, please see our Upgrading to Neo4j 2 FAQ.)