DataWeave 2.10.0 Release Notes

DataWeave is the programming language designed by MuleSoft for data transformation. It is also the expression language Mule runtime engine uses to configure components and connectors.

For more detail, see DataWeave Language.

October 2, 2025

DataWeave 2.10.0 is bundled with the Mule 4.10.0 release. For details about the Mule release, see Mule Runtime Engine 4.10.0 Release Notes.

What’s New

The 2.10.0 version of DataWeave introduces the following new features and enhancements:

DataWeave Logging Configuration:

You can now configure DataWeave logging to control log levels and improve debugging and monitoring. See DataWeave Logging Configuration for details.

DataWeave module features:

The logDebug function (logDebug) is new.
The logError function (logError) is new.
The logInfo function (logInfo) is new.
The logWarn function (logWarn) is new.
The logWith function (logWith) is new.
The decimalAdd function (decimalAdd) is new.
The decimalDivide function (decimalDivide) is new.
The decimalMultiply function (decimalMultiply) is new.
The decimalPow function (decimalPow) is new.
The decimalRound function (decimalRound) is new.
The decimalSqrt function (decimalSqrt) is new.
The decimalSubtract function (decimalSubtract) is new.
The Math Types (Math Types) are new.

General improvements:

DataWeave incorporates new system properties. See DataWeave System Properties.
DataWeave now supports Avro primitive types as top-level schema elements. See Avro Format.

Compatibility

The following table specifies which version of DataWeave is bundled with each Mule runtime engine release:

Mule Version	DataWeave Version
4.10	2.10
4.9	2.9
4.8	2.8
4.7	2.7
4.6	2.6
4.5	2.5
4.4	2.4
4.3	2.3
4.2	2.2
4.1	2.1
3.9	1.2
3.8	1.1
3.7	1.0

Fixed Issues

The release addresses the following DataWeave issues and incorporates all patch updates from the 2.9.0 DataWeave release through September 2025:

Issue Resolution ID

Issue Resolution	ID
The `take` function now works with streaming when argument is larger than the array length.	W-19168279
`java-module` now supports object fields access when using different capitalizations.	W-19477334

The take function now works with streaming when argument is larger than the array length.

W-19168279

java-module now supports object fields access when using different capitalizations.

W-19477334

Upgrade

This version of DataWeave is bundled with Mule. DataWeave upgrades take place through Mule. See Mule Upgrades and Patch Updates.