Important
MongoDB 8.2 Release Candidates
MongoDB 8.2 binaries are currently available only as release candidates. Release candidates can be used for early testing of new features, but are not suitable for production deployments.
This version of the manual is for an upcoming release and is currently a work in progress.
Important
MongoDB 8.2 is the latest minor release. Starting with MongoDB 8.2, minor releases are available for on-premises deployments (Community and EA) for specific use cases. For more information, see MongoDB Versioning.
To install the latest MongoDB version supported for on-premises use, see the installation instructions.
Backward-Incompatible Features
General Changes
$$CLUSTER_TIME Errors on Standalone Deployments
Starting in MongoDB 8.2, if you try to use the CLUSTER_TIME
variable in a standalone deployment, the server returns an error.
$rankFusion on Views
Starting in MongoDB 8.2, $rankFusion can now run on views.
For more information, see $rankFusion.
orphanCleanupDelaySecs Change
Starting in MongoDB 8.2, the default value of orphanCleanupDelaySecs
is 3600 (previously 900).
Remaining Resharding Time Threshold Change
Starting in MongoDB 8.2 (also available in 8.1.2 and 8.0.13), resharding enters the critical section when the estimated time to complete the remaining work is 500 ms or less.
Removed Parameters
MongoDB 8.2 removes the catalogCacheIndexMaxEntries parameter.