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[Issue]: Nullpointer at ValueReplacer

See original GitHub issue

What happened?

Expect

Sending Kafka messages with a key that uses a changing UUID.

The function ${__UUID()} of JMeter is to be used for this.
Variables ${TEST_VAR} can also not be used as an alternative.

Result

A NullPointerException always occur in this case.

More information

KloadGen: 5.1.1 JMeter: 5.5 Schema: Is not required Testplan: Nullpointer.zip (Minimal test plan. A running Kafka is not required to produce the NullPointerException)

KloadGen Version

5.1.1

Relevant log output

2022-09-29 13:59:35,202 DEBUG o.a.j.e.u.ValueReplacer: About to replace in property of type: class org.apache.jmeter.testelement.property.StringProperty: KLG - Value Plain - VARIABLE - ❌
2022-09-29 13:59:35,202 DEBUG o.a.j.e.u.ValueReplacer: Replacement result: KLG - Value Plain - VARIABLE - ❌
2022-09-29 13:59:35,202 DEBUG o.a.j.e.u.ValueReplacer: About to replace in property of type: class org.apache.jmeter.testelement.property.BooleanProperty: true
2022-09-29 13:59:35,202 DEBUG o.a.j.e.u.ValueReplacer: Won't replace true
2022-09-29 13:59:35,202 DEBUG o.a.j.e.u.ValueReplacer: About to replace in property of type: class org.apache.jmeter.testelement.property.StringProperty: ${TEST_VAR}
2022-09-29 13:59:35,202 DEBUG o.a.j.t.p.AbstractProperty: Not running version, return raw function string
2022-09-29 13:59:35,202 DEBUG o.a.j.e.u.ValueReplacer: Replacement result: ${TEST_VAR}
2022-09-29 13:59:35,202 DEBUG o.a.j.e.u.ValueReplacer: About to replace in property of type: class org.apache.jmeter.testelement.property.StringProperty: org.apache.kafka.common.serialization.StringSerializer
2022-09-29 13:59:35,202 DEBUG o.a.j.e.u.ValueReplacer: Replacement result: org.apache.kafka.common.serialization.StringSerializer
2022-09-29 13:59:35,202 DEBUG o.a.j.e.u.ValueReplacer: About to replace in property of type: class org.apache.jmeter.testelement.property.StringProperty: 
2022-09-29 13:59:35,202 DEBUG o.a.j.e.u.ValueReplacer: Replacement result: 
2022-09-29 13:59:35,202 DEBUG o.a.j.t.p.AbstractProperty: Not running version, return raw function string
2022-09-29 13:59:35,202 DEBUG o.a.j.t.p.AbstractProperty: Not running version, return raw function string
2022-09-29 13:59:35,202 DEBUG o.a.j.p.j.s.JavaSampler: StandardJMeterEngine@6ec2ddb3-Java Request	testStarted
2022-09-29 13:59:35,202 INFO o.a.j.p.j.s.JavaSampler: Created class: net.coru.kloadgen.sampler.KafkaSchemaSampler. Uses tearDownTest: 
2022-09-29 13:59:35,203 INFO o.a.j.g.u.JMeterMenuBar: setRunning(true, *local*)
2022-09-29 13:59:35,203 ERROR o.a.j.JMeter: Uncaught exception in thread Thread[StandardJMeterEngine,6,main]
java.lang.NullPointerException: null
	at org.apache.jorphan.collections.HashTree.traverseInto(HashTree.java:994) ~[jorphan.jar:5.5]
	at org.apache.jorphan.collections.HashTree.traverseInto(HashTree.java:994) ~[jorphan.jar:5.5]
	at org.apache.jorphan.collections.HashTree.traverse(HashTree.java:976) ~[jorphan.jar:5.5]
	at org.apache.jmeter.engine.StandardJMeterEngine.run(StandardJMeterEngine.java:405) ~[ApacheJMeter_core.jar:5.5]
	at java.lang.Thread.run(Thread.java:834) ~[?:?]

Have you added your JMX Testplan or a replica?

I have added a JMX testplan

Have you added your Schema or a replica?

I have added the Schema

Issue Analytics

State:
Created a year ago
Comments:8 (4 by maintainers)

Top GitHub Comments

2reactions

dianaGomezGarcommented, Sep 30, 2022

Hi @fabianAtruvia ,

Thank you for your report. We already know about this error and we are working to fix it. We let you know as soon as we have a solution.

1reaction

jemacineirascommented, Oct 18, 2022

Hi @fabianAtruvia,

there is a PR which will solve this issue. You can test it before merge if you like.

Cheers!

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