Native image crashes with NullPointerException on Kubernetes (probably GraalVM bug with workaround) #34314
Closed as not planned
Description
Under Spring Boot 3.0.2, native-compiled container image running on Kubernetes (in this case a "vanilla" 1.24.7 3-node cluster) fails with a NullPointerException. The same image runs perfectly directly under Docker.
After some research, I believe the underlying cause to be a current GraalVM bug. As per that issue, there is an available workaround (see below) which could be incorporated into the build process pending resolution of the underlying issue.
Steps to reproduce
# Generate simplest web app
curl https://start.spring.io/starter.zip -d dependencies=web,native -d bootVersion=3.0.2.RELEASE -d baseDir=demo -o demo.zip
# Unpack and build
unzip demo.zip
cd demo
./gradlew bootBuildImage
# Tag and upload to a registry
docker tag demo:0.0.1-SNAPSHOT someuser/demo:1.0
docker push someuser/demo:1.0
# Run on Kubernetes
kubectl run demo --image someuser/demo:1.0
# Observe the state
kubectl get pod demo
kubectl logs demoThe state of the pod will be "Error" or "CrashLoopBackoff"
The output of kubectl logs is:
Exception in thread "main" java.lang.IllegalArgumentException: Unable to instantiate factory class [org.springframework.boot.autoconfigure.BackgroundPreinitializer] for factory type [org.springframework.context.ApplicationListener]
at org.springframework.core.io.support.SpringFactoriesLoader$FailureHandler.lambda$throwing$0(SpringFactoriesLoader.java:650)
at org.springframework.core.io.support.SpringFactoriesLoader$FailureHandler.lambda$handleMessage$3(SpringFactoriesLoader.java:674)
at org.springframework.core.io.support.SpringFactoriesLoader.instantiateFactory(SpringFactoriesLoader.java:231)
at org.springframework.core.io.support.SpringFactoriesLoader.load(SpringFactoriesLoader.java:206)
at org.springframework.core.io.support.SpringFactoriesLoader.load(SpringFactoriesLoader.java:160)
at org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:459)
at org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:455)
at org.springframework.boot.SpringApplication.<init>(SpringApplication.java:274)
at org.springframework.boot.SpringApplication.<init>(SpringApplication.java:252)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1302)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1291)
at com.example.demo.DemoApplication.main(DemoApplication.java:10)
Caused by: java.lang.InternalError: java.lang.reflect.InvocationTargetException
at com.oracle.svm.core.containers.Metrics.systemMetrics(Metrics.java:67)
at com.oracle.svm.core.containers.Container.metrics(Container.java:44)
at com.oracle.svm.core.ContainerInfo.<init>(ContainerInfo.java:34)
at com.oracle.svm.core.Containers.activeProcessorCount(Containers.java:125)
at [email protected]/java.lang.Runtime.availableProcessors(Runtime.java:247)
at org.springframework.boot.autoconfigure.BackgroundPreinitializer.<clinit>(BackgroundPreinitializer.java:68)
at [email protected]/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499)
at [email protected]/java.lang.reflect.Constructor.newInstance(Constructor.java:480)
at org.springframework.core.io.support.SpringFactoriesLoader$FactoryInstantiator.instantiate(SpringFactoriesLoader.java:381)
at org.springframework.core.io.support.SpringFactoriesLoader.instantiateFactory(SpringFactoriesLoader.java:228)
... 9 more
Caused by: java.lang.reflect.InvocationTargetException
at [email protected]/java.lang.reflect.Method.invoke(Method.java:568)
at com.oracle.svm.core.containers.Metrics.systemMetrics(Metrics.java:63)
... 18 more
Caused by: java.lang.ExceptionInInitializerError
at com.oracle.svm.core.containers.CgroupSubsystemFactory.create(CgroupSubsystemFactory.java:78)
at com.oracle.svm.core.containers.CgroupMetrics.getInstance(CgroupMetrics.java:164)
... 20 more
Caused by: java.lang.NullPointerException
at [email protected]/java.util.Objects.requireNonNull(Objects.java:208)
at [email protected]/sun.nio.fs.UnixFileSystem.getPath(UnixFileSystem.java:263)
at [email protected]/java.nio.file.Path.of(Path.java:147)
at [email protected]/java.nio.file.Paths.get(Paths.java:69)
at com.oracle.svm.core.containers.CgroupUtil.lambda$readStringValue$0(CgroupUtil.java:57)
at [email protected]/java.security.AccessController.executePrivileged(AccessController.java:144)
at [email protected]/java.security.AccessController.doPrivileged(AccessController.java:569)
at com.oracle.svm.core.containers.CgroupUtil.readStringValue(CgroupUtil.java:59)
at com.oracle.svm.core.containers.CgroupSubsystemController.getStringValue(CgroupSubsystemController.java:66)
at com.oracle.svm.core.containers.CgroupSubsystemController.getLongValue(CgroupSubsystemController.java:125)
at com.oracle.svm.core.containers.cgroupv1.CgroupV1Subsystem.getLongValue(CgroupV1Subsystem.java:269)
at com.oracle.svm.core.containers.cgroupv1.CgroupV1Subsystem.getHierarchical(CgroupV1Subsystem.java:215)
at com.oracle.svm.core.containers.cgroupv1.CgroupV1Subsystem.setSubSystemControllerPath(CgroupV1Subsystem.java:203)
at com.oracle.svm.core.containers.cgroupv1.CgroupV1Subsystem.initSubSystem(CgroupV1Subsystem.java:111)
at com.oracle.svm.core.containers.cgroupv1.CgroupV1Subsystem.<clinit>(CgroupV1Subsystem.java:47)
... 22 more
Workaround
A workaround is to incorporate the following into the build.gradle:
tasks.named("bootBuildImage") {
// Workaround for NPE - see https://github.com/oracle/graal/issues/4757
environment["BP_NATIVE_IMAGE_BUILD_ARGUMENTS"] = "-H:-UseContainerSupport"
}