error while producer connect to kafka

[ramandas30]

Hi, i am new to this tool . when i tried to run Example-Test_plan.jmx got error

2022-01-24 15:11:10,142 ERROR n.c.k.l.i.AvroLoadGenerator: Please make sure that properties data type and expression function return type are compatible with each other
java.lang.NullPointerException: null
at com.fasterxml.jackson.core.JsonFactory.createParser(JsonFactory.java:1045) ~[jackson-core-2.10.5.jar:2.10.5]
at org.apache.avro.Schema$Parser.parse(Schema.java:1413) ~[kloadgen-3.6.3-kloadgen-plugin-3.6.3.jar:?]
at net.coru.kloadgen.loadgen.impl.AvroLoadGenerator.setUpGenerator(AvroLoadGenerator.java:52) [kloadgen-3.6.3-kloadgen-plugin-3.6.3.jar:?]
at net.coru.kloadgen.sampler.SamplerUtil.configureValueGenerator(SamplerUtil.java:403) [kloadgen-3.6.3-kloadgen-plugin-3.6.3.jar:?]
at net.coru.kloadgen.sampler.KafkaSchemaSampler.setupTest(KafkaSchemaSampler.java:92) [kloadgen-3.6.3-kloadgen-plugin-3.6.3.jar:?]
at org.apache.jmeter.protocol.java.sampler.JavaSampler.sample(JavaSampler.java:194) [ApacheJMeter_java.jar:5.4.3]
at org.apache.jmeter.threads.JMeterThread.doSampling(JMeterThread.java:638) [ApacheJMeter_core.jar:5.4.3]
at org.apache.jmeter.threads.JMeterThread.executeSamplePackage(JMeterThread.java:558) [ApacheJMeter_core.jar:5.4.3]
at org.apache.jmeter.threads.JMeterThread.processSampler(JMeterThread.java:489) [ApacheJMeter_core.jar:5.4.3]
at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:256) [ApacheJMeter_core.jar:5.4.3]
at java.lang.Thread.run(Thread.java:829) [?:?]
2022-01-24 15:11:10,152 ERROR o.a.j.t.JMeterThread: Error while processing sampler: 'Kafka Producer Properties'.

config detail is :
bootstrap.server=localhost:9092
kafka.topic.name=Test_raman

am i missing some other configuration?

[fcampostato]

Hi @ramandas30,

Thanks for using the plugin.
To help you with this, we are going to need to take a look to the .jmx and the Avro schema that you are using. Do you mind create an issue and attach that files?

Cheers!

[fcampostato]

Hello again @ramandas30,

If you are still getting this error, please open an issue and attach the .jmx and Avro schema files that you are using, so we could replicate the same situtation and work on it.

Thank you!
Cheers!

[ramandas30]

Example-Test-Plan.jmx.zip
this is same file which was in this repo with updated kafka address

[ramandas30]

actually i am new to this load tool so better if u add some document how to create producer.jmx.

my requirement is create one topic with some minimum schema -- producer requirenment
consume that topic -- consumer req.

i will run this file on cluster with jmeter command line option

[fcampostato]

Hello @ramandas30,

Sorry about the delay.

I was looking your jmx file and it seems to be ok. I give you a reviewed version here:
Example-Test-Plan-Ramandas30.zip

For me, it seems that you are trying to execute the producer before loading correctly the schema. In this example, you must go to "Schema Registry Config Element" and click on "Test Registry". That will opens a confirmation message that displays how many schemas are registered.
Once done that, you must go to "Value Schema Load Generator Config" to select an schema and load it.

When all of this is done, you are ready to execute the plan.
Doing that solves the problem for me.

I hope this helps you.
If you need further support, please consider opening an issue.

Thak you! Cheers!