JMeter 5.6.1 Release Notes

About these release notes

This page lists every documented change shipped in Apache JMeter 5.6.1, generated from the official changelog. For download and upgrade guidance, see Download JMeter.

Highlights

• UTF-8 became the default encoding in the HTTP sampler, enabling parameter names and file names with unicode characters.
• The HTTP(S) Test Script Recorder uses UTF-8 by default, inferring human-readable arguments rather than percent-encoded ones.
• The default value of sampleresult.default.encoding changed to UTF-8 (inheriting the default HTTP encoding).
• Regression fixes since 5.6: Thread Groups no longer run endlessly in non-GUI mode, and the Java Request sampler can be re-enabled after being disabled in the UI.

Change summary

Section	Changes
Improvements	2
Bug fixes	2
Non-functional changes	8

New and Noteworthy

Improvements

HTTP Samplers and Test Script Recorder

• PR#6010Use UTF-8 as a default encoding in HTTP sampler. It enables sending parameter names, and filenames with unicode characters
• PR#6010Test Recorder will use UTF-8 encoding by default, so it will infer human-readable arguments rather than percent-encoded ones

Bug fixes

Thread Groups

• PR#6011Regression since 5.6: ThreadGroups are running endlessly in non-gui mode: use default value for LoopController.continue_forever rather than initializing it in the constructor

Other Samplers

• PR#6012 Java Request sampler cannot be enabled again after disabling in UI (regression since 5.6)

Non-functional changes

• PR#6000Add release-drafter for populating GitHub releases info based on the merged PRs
• PR#5989Use Gradle toolchains for JDK provisioning, enable building and testing with different JDKs, start testing with Java 21
• PR#5991Update jackson-core, jackson-databind, jackson-annotations to 2.15.2 (from 2.15.1)
• PR#5993Update ph-commons to 10.2.5 (from 10.2.4)
• PR#6017Update kotlin-stdlib to 1.8.22 (from 1.8.21)
• PR#6020Update error_prone_annotations to 2.20.0 (from 2.19.1)
• PR#6023Update checker-qual to 3.35.0 (from 3.34.0)

Other Samplers

• PR#6028 Change default value for sampleresult.default.encoding to UTF-8 (it inherits default HTTP encoding which was modified in PR#6010)

Thanks

We thank all contributors mentioned in bug and improvement sections above:

• Alex Schwartz, @alexsch01

We also thank bug reporters who helped us improve JMeter.

• David Getzlaff, @dgetzlaf
• LeeBaul, @libaolu

Apologies if we have omitted anyone else.

Useful links

• Download JMeter
• Getting started guide
• All release notes
• Current changes page
• History of previous changes