Compatibility Changes in MongoDB 5.2

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This version of the documentation is archived and no longer supported. View the current documentation to learn how to upgrade your version of MongoDB server.

The following 5.2 changes can affect compatibility with older versions of MongoDB.

`$setWindowFields` Stage with Transactions and Snapshot Read Concern

In MongoDB versions earlier than 5.3, the $setWindowFields aggregation pipeline stage cannot be used with transactions or the "snapshot" read concern.

MongodB removes the following mongod options:

Removed `mongod` Options	Description
`--cpu`	MongoDB 5.2 removes the `--cpu` `mongod` option.