Release Notes for mongosync 1.12
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This page describes changes and new features introduced in MongoDB Cluster-to-Cluster Sync 1.12.
1.12.0 Release
February 19, 2025
MongoDB 8.0 support
MongoDB Cluster-to-Cluster Sync 1.12 adds support for MongoDB 8.0 on the source cluster. However, it does not migrate Persistent Query Settings (PQS), which are new in 8.0. If your source cluster uses PQS, you must migrate them manually.
For a full list of supported versions, see MongoDB Server Version Compatibility.
enableUserWriteBlocking parameters
The enableUserWriteBlocking parameter in the
/start API now accepts the following string options:
"sourceAndDestination"for dual write-blocking"none"for no write-blocking
Use these options instead of the old true and false values.
enableUserWriteBlocking still supports true and false
for backward compatibility.
Live Upgrades
Live upgrades to version 1.12 are not supported.
Other Notes
Added a machine-friendly label to warnings about Persisted Query Settings
Minimum Supported Version
For information on minimum supported versions, see MongoDB Server Version Compatibility.
For best performance, upgrade your source and destination clusters to the most recent MongoDB Server patch release prior to migration. For more information, see Upgrade to the Latest Self-Managed Patch Release of MongoDB.