'cassandraCluster' bean exception while starting Spring Boot Application - spring

Question

I am getting the below exception while starting the Spring Boot Application.
Spring Boot Version: 2.1.13
Spring Framework Version: 5.1.14
Exception:
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cassandraCluster' defined in class path resource [org/springframework/boot/autoconfigure/cassandra/CassandraAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.datastax.driver.core.Cluster]: Factory method 'cassandraCluster' threw exception; nested exception is java.lang.ExceptionInInitializerError
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:627) ~[spring-beans-5.1.14.RELEASE.jar:5.1.14.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:456) ~[spring-beans-5.1.14.RELEASE.jar:5.1.14.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1320) ~[spring-beans-5.1.14.RELEASE.jar:5.1.14.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1159) ~[spring-beans-5.1.14.RELEASE.jar:5.1.14.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555) ~[spring-beans-5.1.14.RELEASE.jar:5.1.14.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515) ~[spring-beans-5.1.14.RELEASE.jar:5.1.14.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) ~[spring-beans-5.1.14.RELEASE.jar:5.1.14.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.1.14.RELEASE.jar:5.1.14.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) ~[spring-beans-5.1.14.RELEASE.jar:5.1.14.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.1.14.RELEASE.jar:5.1.14.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:847) ~[spring-beans-5.1.14.RELEASE.jar:5.1.14.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:877) ~[spring-context-5.1.14.RELEASE.jar:5.1.14.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549) ~[spring-context-5.1.14.RELEASE.jar:5.1.14.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) ~[spring-boot-2.1.13.RELEASE.jar:2.1.13.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:744) ~[spring-boot-2.1.13.RELEASE.jar:2.1.13.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:391) ~[spring-boot-2.1.13.RELEASE.jar:2.1.13.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:312) ~[spring-boot-2.1.13.RELEASE.jar:2.1.13.RELEASE]
Caused By:
Caused by: com.datastax.driver.core.exceptions.DriverInternalError: Detected incompatible version of Guava in the classpath. You need 16.0.1 or higher.
at com.datastax.driver.core.GuavaCompatibility.selectImplementation(GuavaCompatibility.java:191) ~[cassandra-driver-core-3.6.0.jar:na]
at com.datastax.driver.core.GuavaCompatibility.(GuavaCompatibility.java:59) ~[cassandra-driver-core-3.6.0.jar:na]
... 30 common frames omitted
But I have guava-19.0 version jar in the classpath.
I was not facing this issue with Spring Boot 2.1.6 and Spring Framework 5.1.5.

Answer 1

It seems like you have two versions of Guava on your classpath. Some other packages might pull the other version. You should pin the version of Guava inside the <dependencyManagement> section of Maven (I expect you use Maven):
<dependencyManagement>
<dependencies>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>19.0</version>
</dependency>
</dependencies>
</dependencyManagement>
or exclude the Guava dependency from the other dependency which pulls it too.
Hint for the future: Consider adding the Maven Enforcer Plugin to your project and check for dependency convergence to check for such similar issues:
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-enforcer-plugin</artifactId>
<version>1.4.1</version>
<executions>
<execution>
<id>enforce</id>
<configuration>
<rules>
<DependencyConvergence/>
</rules>
</configuration>
<goals>
<goal>enforce</goal>
</goals>
<phase>validate</phase>
</execution>
</executions>
</plugin>
</plugins>
...
</build>