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Redis – java.lang.IllegalAccessException: class io.netty.util.internal.PlatformDependent0$6

I was trying to implement Redis caching for SpringBoot app which exposes Rest API. Important code snippets and maven build file enclosed.

Start-up annotations:

@SpringBootApplication
@EnableAsync
@EnableScheduling
@EnableCaching
public class Application {

pom.xml(Only relevant dependencies listed) :

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.1.RELEASE</version>
        <relativePath/>
    </parent>


    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>

        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>
        <dependency>
            <groupId>redis.clients</groupId>
            <artifactId>jedis</artifactId>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.10</version>
            <scope>provided</scope>
        </dependency>


        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.assertj</groupId>
            <artifactId>assertj-core</artifactId>
            <version>3.9.1</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

Running from IntelliJ IDE environment.

  • Project SDK : Java 11
  • Project Language Level : 11

At project start-up I am encountering below exception but start-up completes successfully. What is the root cause of the exception and how I can solve it?

java.lang.UnsupportedOperationException: Reflective setAccessible(true) disabled
    at io.netty.util.internal.ReflectionUtil.trySetAccessible(ReflectionUtil.java:31)
    at io.netty.util.internal.PlatformDependent0$4.run(PlatformDependent0.java:233)
    at java.base/java.security.AccessController.doPrivileged(Native Method)
    at io.netty.util.internal.PlatformDependent0.<clinit>(PlatformDependent0.java:227)
    at io.netty.util.internal.PlatformDependent.isAndroid(PlatformDependent.java:289)
    at io.netty.util.internal.PlatformDependent.<clinit>(PlatformDependent.java:92)
    at io.netty.util.HashedWheelTimer.<init>(HashedWheelTimer.java:109)
    at io.netty.util.HashedWheelTimer.<init>(HashedWheelTimer.java:218)
    at io.netty.util.HashedWheelTimer.<init>(HashedWheelTimer.java:197)
    at io.netty.util.HashedWheelTimer.<init>(HashedWheelTimer.java:179)
    at io.netty.util.HashedWheelTimer.<init>(HashedWheelTimer.java:163)
    at io.lettuce.core.resource.DefaultClientResources.<init>(DefaultClientResources.java:167)
    at io.lettuce.core.resource.DefaultClientResources$Builder.build(DefaultClientResources.java:530)
    at io.lettuce.core.resource.DefaultClientResources.create(DefaultClientResources.java:231)
    at org.springframework.boot.autoconfigure.data.redis.LettuceConnectionConfiguration.lettuceClientResources(LettuceConnectionConfiguration.java:66)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:650)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:483)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1338)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1177)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:557)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:226)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:893)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:879)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750)
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226)
    at com.iyzico.challenge.Application.main(Application.java:18)

2020-09-24 12:25:24.039 DEBUG 56915 --- [           main] i.n.util.internal.PlatformDependent0     : java.nio.Bits.unaligned: available, true
2020-09-24 12:25:24.040 DEBUG 56915 --- [           main] i.n.util.internal.PlatformDependent0     : jdk.internal.misc.Unsafe.allocateUninitializedArray(int): unavailable

java.lang.IllegalAccessException: class io.netty.util.internal.PlatformDependent0$6 cannot access class jdk.internal.misc.Unsafe (in module java.base) because module java.base does not export jdk.internal.misc to unnamed module @21ba2445
    at java.base/jdk.internal.reflect.Reflection.newIllegalAccessException(Reflection.java:361)
    at java.base/java.lang.reflect.AccessibleObject.checkAccess(AccessibleObject.java:591)
    at java.base/java.lang.reflect.Method.invoke(Method.java:558)
    at io.netty.util.internal.PlatformDependent0$6.run(PlatformDependent0.java:347)
    at java.base/java.security.AccessController.doPrivileged(Native Method)
    at io.netty.util.internal.PlatformDependent0.<clinit>(PlatformDependent0.java:338)
    at io.netty.util.internal.PlatformDependent.isAndroid(PlatformDependent.java:289)
    at io.netty.util.internal.PlatformDependent.<clinit>(PlatformDependent.java:92)
    at io.netty.util.HashedWheelTimer.<init>(HashedWheelTimer.java:109)
    at io.netty.util.HashedWheelTimer.<init>(HashedWheelTimer.java:218)
    at io.netty.util.HashedWheelTimer.<init>(HashedWheelTimer.java:197)
    at io.netty.util.HashedWheelTimer.<init>(HashedWheelTimer.java:179)
    at io.netty.util.HashedWheelTimer.<init>(HashedWheelTimer.java:163)
    at io.lettuce.core.resource.DefaultClientResources.<init>(DefaultClientResources.java:167)
    at io.lettuce.core.resource.DefaultClientResources$Builder.build(DefaultClientResources.java:530)
    at io.lettuce.core.resource.DefaultClientResources.create(DefaultClientResources.java:231)
    at org.springframework.boot.autoconfigure.data.redis.LettuceConnectionConfiguration.lettuceClientResources(LettuceConnectionConfiguration.java:66)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:650)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:483)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1338)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1177)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:557)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:226)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:893)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:879)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750)
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226)
    at com.iyzico.challenge.Application.main(Application.java:18)

Thanks in advance

Tags:

2

Answers


  1. 0

    As per https://github.com/netty/netty/issues/7817 "It’s not an error, it’s a debug message with a stacktrace, change your logger level to something else apart from debug eg. info or warn."

    You need to change your logger level of this package to suppress these warnings.

    Add this line below in your logback-spring.xml to suppress all messages.

    <logger name="io.netty.util" level="ERROR"/>
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  2. 0

    I fix it by adding this to JVM args

    –add-opens java.base/jdk.internal.misc=ALL-UNNAMED –add-opens java.base/java.nio=ALL-UNNAMED –add-opens java.base/java.security=ALL-UNNAMED –add-opens jdk.unsupported/sun.misc=ALL-UNNAMED –add-opens java.base/sun.security.action=ALL-UNNAMED –add-opens jdk.naming.rmi/com.sun.jndi.rmi.registry=ALL-UNNAMED –add-opens java.base/sun.net=ALL-UNNAMED –add-opens java.base/java.lang=ALL-UNNAMED –add-opens java.base/java.lang.reflect=ALL-UNNAMED

    these args may have other that is not related to this problem, but I can not pick them out

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