I'm trying to use the RestHighLevelClient via this dependency
<dependency>
<groupId>org.elasticsearch.client</groupId>
<artifactId>elasticsearch-rest-high-level-client</artifactId>
<version>6.0.1</version>
</dependency>
But I keep getting ClassNotFoundExceptions in the RestHighLevelClient
class.
When I try to wire up this bean (AwsAmsElasticsearchClientConfig.java
:
@Bean(name = "elasticsearchRestClient")
public RestHighLevelClient getElasticsearchRestClient() {
RestClientBuilder restClientBuilder = RestClient.builder(
new HttpHost(HOST, PORT, SCHEME));
restClientBuilder.setHttpClientConfigCallback(
new RestClientBuilder.HttpClientConfigCallback() {
@Override
public HttpAsyncClientBuilder customizeHttpClient(HttpAsyncClientBuilder httpClientBuilder) {
httpClientBuilder.addInterceptorLast(buildAwsSigningRequestInterceptor());
// add SSL config if needed
// httpClientBuilder.setSSLContext(null);
return httpClientBuilder;
}
}
);
return new RestHighLevelClient(restClientBuilder);
}
I receive these errors:
19:51:11.026 ERROR [ main] SpringApplication - Application startup failed
java.lang.ClassNotFoundException: org.elasticsearch.common.CheckedConsumer
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) [1 skipped]
at com.glassdoor.applicantManagement.aws.AwsAmsElasticsearchClientConfig.getElasticsearchRestClient(AwsAmsElasticsearchClientConfig.java:63) [2 skipped]
at com.glassdoor.applicantManagement.aws.AwsAmsElasticsearchClientConfig$$EnhancerBySpringCGLIB$$c8f9ed07.CGLIB$getElasticsearchRestClient$0(<generated>)
Wrapped by: java.lang.NoClassDefFoundError: org/elasticsearch/common/CheckedConsumer
at com.glassdoor.applicantManagement.aws.AwsAmsElasticsearchClientConfig.getElasticsearchRestClient(AwsAmsElasticsearchClientConfig.java:63) [2 skipped]
at com.glassdoor.applicantManagement.aws.AwsAmsElasticsearchClientConfig$$EnhancerBySpringCGLIB$$c8f9ed07.CGLIB$getElasticsearchRestClient$0(<generated>)
at com.glassdoor.applicantManagement.aws.AwsAmsElasticsearchClientConfig$$EnhancerBySpringCGLIB$$c8f9ed07$$FastClassBySpringCGLIB$$fba1a4f2.invoke(<generated>)
at com.glassdoor.applicantManagement.aws.AwsAmsElasticsearchClientConfig$$EnhancerBySpringCGLIB$$c8f9ed07.getElasticsearchRestClient(<generated>) [2 skipped]
at java.lang.reflect.Method.invoke(Method.java:498) [3 skipped]
Wrapped by: java.lang.BootstrapMethodError: java.lang.NoClassDefFoundError: org/elasticsearch/common/CheckedConsumer
at com.glassdoor.applicantManagement.aws.AwsAmsElasticsearchClientConfig.getElasticsearchRestClient(AwsAmsElasticsearchClientConfig.java:63) [2 skipped]
at com.glassdoor.applicantManagement.aws.AwsAmsElasticsearchClientConfig$$EnhancerBySpringCGLIB$$c8f9ed07.CGLIB$getElasticsearchRestClient$0(<generated>)
at com.glassdoor.applicantManagement.aws.AwsAmsElasticsearchClientConfig$$EnhancerBySpringCGLIB$$c8f9ed07$$FastClassBySpringCGLIB$$fba1a4f2.invoke(<generated>)
at com.glassdoor.applicantManagement.aws.AwsAmsElasticsearchClientConfig$$EnhancerBySpringCGLIB$$c8f9ed07.getElasticsearchRestClient(<generated>) [2 skipped]
at java.lang.reflect.Method.invoke(Method.java:498) [3 skipped]
Wrapped by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.elasticsearch.client.RestHighLevelClient]: Factory method 'getElasticsearchRestClient' threw exception; nested exception is java.lang.BootstrapMethodError: java.lang.NoClassDefFoundError: org/elasticsearch/common/CheckedConsumer
at io.undertow.servlet.core.DeploymentManagerImpl$1.call(DeploymentManagerImpl.java:192) [148 skipped]
at io.undertow.servlet.core.DeploymentManagerImpl$1.call(DeploymentManagerImpl.java:174)
at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:42)
at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
It looks like tons of the transitive dependencies are missing
Turns out there were two things going on here.
As @miroh pointed out below I need to explicitly define the org.elasticsearch:elasticserach:6.0.1
dependency so I don't get the wrong version pulled in. Not sure why this is necessary but it seems to indeed be necessary ... (also referenced here : https://github.com/elastic/elasticsearch/issues/26959)
My project is a multi module Spring project with many other dependencies. Apparently, some of the Spring/Springboot dependencies were dependent on spring-data-elasticsearch
which has a dependency on org.elasticsearch:elasticsearch:2.4.6
. I resolved these conflicting versions of elasticsearch by adding the elasticsearch:6.0.1 version to the dependency management section of my parent pom.xml
. This tells maven to use version 6.0.1 when dependency conflicts are present.
Try adding following dependencies.
<dependency>
<groupId>org.elasticsearch</groupId>
<artifactId>elasticsearch</artifactId>
<version>6.0.1</version>
</dependency>
<dependency>
<groupId>org.elasticsearch.client</groupId>
<artifactId>elasticsearch-rest-client</artifactId>
<version>6.0.1</version>
</dependency>