Jmeter bzm Parallel controller issue with jmeter 5.6

[Ankit Yadav]

hi Team ,

I am facing issue while using bzm Parallel controller 0.11 with Jmeter 5.6 .

i have tried reinstalling plugin and jmeter also.

2023-08-03 13:29:40,614 ERROR o.a.j.t.JMeterThread: Error while processing sampler: 'bzm - Parallel Controller'.
java.lang.ClassCastException: java.util.IdentityHashMap cannot be cast to java.util.HashMap
at com.blazemeter.jmeter.controller.JMeterThreadParallel.cloneTestCompiler(JMeterThreadParallel.java:45) ~[jmeter-parallel-0.11.jar:?]
at com.blazemeter.jmeter.controller.JMeterThreadParallel.copyCompilerFromParent(JMeterThreadParallel.java:36) ~[jmeter-parallel-0.11.jar:?]
at com.blazemeter.jmeter.controller.JMeterThreadParallel.<init>(JMeterThreadParallel.java:26) ~[jmeter-parallel-0.11.jar:?]
at com.blazemeter.jmeter.controller.ParallelSampler.sample(ParallelSampler.java:71) ~[jmeter-parallel-0.11.jar:?]
at org.apache.jmeter.threads.JMeterThread.doSampling(JMeterThread.java:651) ~[ApacheJMeter_core.jar:5.6.2]
at org.apache.jmeter.threads.JMeterThread.executeSamplePackage(JMeterThread.java:570) ~[ApacheJMeter_core.jar:5.6.2]
at org.apache.jmeter.threads.JMeterThread.processSampler(JMeterThread.java:501) [ApacheJMeter_core.jar:5.6.2]
at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:268) [ApacheJMeter_core.jar:5.6.2]
at java.lang.Thread.run(Thread.java:750) [?:1.8.0_333]

[Dmitri T]

It's indeed an issue and there is a pull request.

So you have the following options:

1. Downgrade to JMeter 5.5 
2. Take the .zip file attached to the pull request and install it manually (it will work only with JMeter 5.6 and higher)
3. Contact BlazeMeter Support and ask them to update the plugin and release the new version