ClassNotFoundException: org.apache.logging.log4j.Level when running both examples

[jeronimo13]

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/logging/log4j/Level at org.elasticsearch.common.logging.ESLoggerFactory.<clinit>(ESLoggerFactory.java:38) at org.elasticsearch.common.logging.Loggers.getLogger(Loggers.java:101) at org.elasticsearch.common.ParseField.<clinit>(ParseField.java:35) at org.elasticsearch.index.query.AbstractQueryBuilder.<clinit>(AbstractQueryBuilder.java:53) at org.elasticsearch.index.query.QueryBuilders.matchAllQuery(QueryBuilders.java:46) at org.springframework.data.elasticsearch.repository.support.AbstractElasticsearchRepository.deleteAll(AbstractElasticsearchRepository.java:256) 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:564) at org.springframework.data.repository.core.support.RepositoryComposition$RepositoryFragments.invoke(RepositoryComposition.java:377) at org.springframework.data.repository.core.support.RepositoryComposition.invoke(RepositoryComposition.java:200) at org.springframework.data.repository.core.support.RepositoryFactorySupport$ImplementationMethodExecutionInterceptor.invoke(RepositoryFactorySupport.java:641) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185) at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:605) at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:590) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185) at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:59) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185) at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185) at org.springframework.data.repository.core.support.SurroundingTransactionDetectorMethodInterceptor.invoke(SurroundingTransactionDetectorMethodInterceptor.java:61) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212) at com.sun.proxy.$Proxy50.deleteAll(Unknown Source) at sample.data.jest.aws.SampleJestApplication.run(SampleJestApplication.java:34) at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:818) at org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:802) at org.springframework.boot.SpringApplication.run(SpringApplication.java:341) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1277) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1265) at sample.data.jest.aws.SampleJestApplication.main(SampleJestApplication.java:67) Caused by: java.lang.ClassNotFoundException: org.apache.logging.log4j.Level at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:582) at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:190) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:499) ... 32 more

I setup AWS ES stack as well as localhost elastic(in docker) with no luck.
I've tried spring-boot-sample-data-jest-aws and spring-boot-sample-data-jest examples, but the issue above is the same for both examples

please, help

[VanRoy]

Hi @jeronimo13 , do you have tried to add this dependency :

        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-core</artifactId>
        </dependency>

[Tcharl]

Why slf4j over anything is not sufficient?
Adding log4j-core as a dependency would break the logging system of many client app!

[VanRoy]

Hi @Tcharl , It's seem that elasticsearch use some log4j-core classes : https://github.com/elastic/elasticsearch/blob/v6.2.2/server/src/main/java/org/elasticsearch/common/logging/ServerLoggers.java

[VanRoy]

Hi @jeronimo13 , I updated the getting starting with some informations related to log4j en ES embedded.
No really other workaround for the moment.
Thanks.

[Tcharl]

Sad to hear :-(.
Let's try to find a way to deal with the logging hell.

Thank you for the investigation!