bzm-parallel controller not working

[Sampath Perera]

Hi Team,

I am using Jmeter 5.5 and Java 17. When I try to use bzm parallel controller in my Jmeter test plan that element does not work.

The error says :

ERROR o.a.j.t.JMeterThread: Error while processing sampler: 'bzm - Parallel Controller'.

java.lang.reflect.InaccessibleObjectException: Unable to make field java.lang.ThreadLocal$ThreadLocalMap java.lang.Thread.inheritableThreadLocals accessible: module java.base does not "opens java.lang" to unnamed module @6d2a209c

Please advise.

Thank you

Sampath

[Dmitri T]

You need to use jmeter.bat or jmeter.sh startup scripts which contain the necessary configuration for running JMeter using Java 9+

--add-opens java.desktop/sun.awt=ALL-UNNAMED --add-opens java.desktop/sun.swing=ALL-UNNAMED --add-opens java.desktop/javax.swing.text.html=ALL-UNNAMED --add-opens java.desktop/java.awt=ALL-UNNAMED --add-opens java.desktop/java.awt.font=ALL-UNNAMED --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.lang.invoke=ALL-UNNAMED --add-opens=java.base/java.lang.reflect=ALL-UNNAMED --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.base/java.text=ALL-UNNAMED --add-opens=java.desktop/sun.awt.X11=ALL-UNNAMED --add-opens=java.desktop/sun.awt.shell=ALL-UNNAMED

Also be aware that it's recommended to use the latest version of JMeter where possible so consider migrating to JMeter 5.6.3 (or whatever is the latest version available at JMeter Downloads page)