NullPointerException: When using Camunda Job Workers in Spring boot Application

PAVK_PRASAD · December 17, 2024, 12:54pm

Hi Team,

Getting NullPointerException: When using Camunda Job Workers in Spring boot Application.

Application is started but when executing the use case where job worker is involved in the process getting NullPointerException by using Camunda Job Workers in Spring boot Application.

Already Gone through the ticket #461 and applied the solution but getting the same issue.

*Applied solution: *

tasks.withType(JavaCompile) {
options.compilerArgs << ‘-parameters’
}

To Reproduce

Write Camunda Job workers in spring boot application with below stack
Spring boot 3.2.2
Camunda 8.4.0
Java 17

Expected behavior

No ERROR Should thrown when executing the use cases.

Log/Stacktrace


java.lang.NullPointerException: Cannot load from object array because "parameterNames" is null
	at io.camunda.zeebe.spring.client.bean.MethodInfo.getParameters(MethodInfo.java:72) ~[spring-client-zeebe-8.4.0.jar:8.4.0]
	at io.camunda.zeebe.spring.client.jobhandling.JobHandlerInvokingSpringBeans.handle(JobHandlerInvokingSpringBeans.java:48) ~[spring-client-zeebe-8.4.0.jar:8.4.0]
	at io.camunda.zeebe.client.impl.worker.JobRunnableFactoryImpl.executeJob(JobRunnableFactoryImpl.java:45) ~[zeebe-client-java-8.4.0.jar:8.4.0]
	at io.camunda.zeebe.client.impl.worker.JobRunnableFactoryImpl.lambda$create$0(JobRunnableFactoryImpl.java:40) ~[zeebe-client-java-8.4.0.jar:8.4.0]
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:572) ~[na:na]
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317) ~[na:na]
	at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304) ~[na:na]
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144) ~[na:na]
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642) ~[na:na]
	at java.base/java.lang.Thread.run(Thread.java:1583) ~[na:na]

2024-12-16T18:17:21.158+05:30  WARN 41484 --- [pool-2-thread-1] io.camunda.zeebe.client.job.worker       : Worker eamil failed to handle job with key 2251799815653826 of type email, sending fail command to broker

java.lang.NullPointerException: Cannot load from object array because "parameterNames" is null
	at io.camunda.zeebe.spring.client.bean.MethodInfo.getParameters(MethodInfo.java:72) ~[spring-client-zeebe-8.4.0.jar:8.4.0]
	at io.camunda.zeebe.spring.client.jobhandling.JobHandlerInvokingSpringBeans.handle(JobHandlerInvokingSpringBeans.java:48) ~[spring-client-zeebe-8.4.0.jar:8.4.0]
	at io.camunda.zeebe.client.impl.worker.JobRunnableFactoryImpl.executeJob(JobRunnableFactoryImpl.java:45) ~[zeebe-client-java-8.4.0.jar:8.4.0]
	at io.camunda.zeebe.client.impl.worker.JobRunnableFactoryImpl.lambda$create$0(JobRunnableFactoryImpl.java:40) ~[zeebe-client-java-8.4.0.jar:8.4.0]
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:572) ~[na:na]
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317) ~[na:na]
	at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304) ~[na:na]
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144) ~[na:na]
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642) ~[na:na]
	at java.base/java.lang.Thread.run(Thread.java:1583) ~[na:na]

2024-12-16T18:17:21.171+05:30  WARN 41484 --- [pool-2-thread-1] io.camunda.zeebe.client.job.worker       : Worker eamil failed to handle job with key 2251799815653826 of type email, sending fail command to broker

java.lang.NullPointerException: Cannot load from object array because "parameterNames" is null
	at io.camunda.zeebe.spring.client.bean.MethodInfo.getParameters(MethodInfo.java:72) ~[spring-client-zeebe-8.4.0.jar:8.4.0]
	at io.camunda.zeebe.spring.client.jobhandling.JobHandlerInvokingSpringBeans.handle(JobHandlerInvokingSpringBeans.java:48) ~[spring-client-zeebe-8.4.0.jar:8.4.0]
	at io.camunda.zeebe.client.impl.worker.JobRunnableFactoryImpl.executeJob(JobRunnableFactoryImpl.java:45) ~[zeebe-client-java-8.4.0.jar:8.4.0]
	at io.camunda.zeebe.client.impl.worker.JobRunnableFactoryImpl.lambda$create$0(JobRunnableFactoryImpl.java:40) ~[zeebe-client-java-8.4.0.jar:8.4.0]
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:572) ~[na:na]
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317) ~[na:na]
	at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304) ~[na:na]
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144) ~[na:na]
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642) ~[na:na]
	at java.base/java.lang.Thread.run(Thread.java:1583) ~[na:na]

Environment:

OS: Windows
Deployment: SM (Self Managed)
Spring-Zeebe Version: 8.4.0
SpringBoot Version: 3.2.2
Configuration:
zeebe.client.broker.gatewayAddress=127.0.0.1:26500
zeebe.client.security.plaintext=true

zeebe.client.worker.threads=3
zeebe.client.worker.maxJobsActive=20

GotnOGuts · December 17, 2024, 4:48pm

Did you try the other form of the solution from the Github Issue?

Not saying that I understand what’s going on…

PAVK_PRASAD · December 18, 2024, 9:27am

Yes, I tried that but not working.

GotnOGuts · December 18, 2024, 4:23pm

Which are you using?

Gradle
IntelliJ
JavaC
Maven

PAVK_PRASAD · December 19, 2024, 6:08am

I am Using Gradle.

Added below snippet in build.gradle:

tasks.withType(JavaCompile) {
options.compilerArgs << ‘-parameters’
}

PAVK_PRASAD · December 20, 2024, 1:09pm

Thanks for your time @GotnOGuts

From Eclipse, I applied the compiler settings, and it is working now.