Not able to connect to cassandra from spring boot aplication using spring-boot-starter-data-cassandra - spring-boot

Question

the local DC must be explicitly set (see basic.load-balancing-policy.local-datacenter in the config, or set it programmatically with SessionBuilder.withLocalDatacenter)
Running single node cluster on localhost.
Able to query cassandra keyspace using cqlsh.
Running Cassandra Version: 3.11.8
Using Spring Boot Version: 2.3.4
cassandra.yaml configuration file untouched since downloading latest cassandra version
Cassandra Configuration
spring:
data:
cassandra:
cluster-name: Test Cluster
keyspace-name: test-keyspace
port: 9042
contact-points:
- dc1
#Slf4j
#Configuration
#PropertySource(value = { "classpath:cassandra.yaml" })
#ConfigurationProperties("spring.data.cassandra")
public class CassandraConfiguration extends AbstractCassandraConfiguration {
#Value("${keyspacename}")
protected String keyspaceName;
#Override
protected String getKeyspaceName() {
return this.keyspaceName;
}
#Override
protected List<CreateKeyspaceSpecification> getKeyspaceCreations() {
return Collections.singletonList(CreateKeyspaceSpecification
.createKeyspace(keyspaceName).ifNotExists()
.with(KeyspaceOption.DURABLE_WRITES, true)
.withSimpleReplication());
}
/*
* Creating keyspace if does not exists
*/
#Override
protected List<String> getStartupScripts() {
return Collections.singletonList("CREATE KEYSPACE IF NOT EXISTS "
+ keyspaceName + " WITH replication = {"
+ " 'class': 'SimpleStrategy', "
+ " 'replication_factor': '1' "
+ "};");
}
}
Getting exception when running Spring Boot application.
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cassandraConverter' defined in class path resource [lowleveldesign/facebook/api/configurations/CassandraConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.cassandra.core.convert.CassandraConverter]: Factory method 'cassandraConverter' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cassandraSession' defined in class path resource [lowleveldesign/facebook/api/configurations/CassandraConfiguration.class]: Invocation of init method failed; nested exception is java.lang.IllegalStateException: Since you provided explicit contact points, the local DC must be explicitly set (see basic.load-balancing-policy.local-datacenter in the config, or set it programmatically with SessionBuilder.withLocalDatacenter). Current contact points are: Node(endPoint=localhost:9042, hostId=de774b94-e7c4-4486-a75f-fda45e16e53f, hashCode=4ecec333)=datacenter1. Current DCs in this cluster are: datacenter1
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:655) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:483) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1336) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1176) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:556) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:897) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:879) ~[spring-context-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551) ~[spring-context-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
at lowleveldesign.facebook.api.FacebookLLDApplication.main(FacebookLLDApplication.java:12) ~[classes/:na]
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.cassandra.core.convert.CassandraConverter]: Factory method 'cassandraConverter' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cassandraSession' defined in class path resource [lowleveldesign/facebook/api/configurations/CassandraConfiguration.class]: Invocation of init method failed; nested exception is java.lang.IllegalStateException: Since you provided explicit contact points, the local DC must be explicitly set (see basic.load-balancing-policy.local-datacenter in the config, or set it programmatically with SessionBuilder.withLocalDatacenter). Current contact points are: Node(endPoint=localhost:9042, hostId=de774b94-e7c4-4486-a75f-fda45e16e53f, hashCode=4ecec333)=datacenter1. Current DCs in this cluster are: datacenter1
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:650) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
... 20 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cassandraSession' defined in class path resource [lowleveldesign/facebook/api/configurations/CassandraConfiguration.class]: Invocation of init method failed; nested exception is java.lang.IllegalStateException: Since you provided explicit contact points, the local DC must be explicitly set (see basic.load-balancing-policy.local-datacenter in the config, or set it programmatically with SessionBuilder.withLocalDatacenter). Current contact points are: Node(endPoint=localhost:9042, hostId=de774b94-e7c4-4486-a75f-fda45e16e53f, hashCode=4ecec333)=datacenter1. Current DCs in this cluster are: datacenter1
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1794) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:227) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveNamedBean(DefaultListableBeanFactory.java:1175) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveBean(DefaultListableBeanFactory.java:420) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:349) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:342) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.data.cassandra.config.AbstractSessionConfiguration.requireBeanOfType(AbstractSessionConfiguration.java:100) ~[spring-data-cassandra-3.0.4.RELEASE.jar:3.0.4.RELEASE]
at org.springframework.data.cassandra.config.AbstractSessionConfiguration.getRequiredSession(AbstractSessionConfiguration.java:200) ~[spring-data-cassandra-3.0.4.RELEASE.jar:3.0.4.RELEASE]
at org.springframework.data.cassandra.config.AbstractCassandraConfiguration.cassandraConverter(AbstractCassandraConfiguration.java:73) ~[spring-data-cassandra-3.0.4.RELEASE.jar:3.0.4.RELEASE]
at lowleveldesign.facebook.api.configurations.CassandraConfiguration$$EnhancerBySpringCGLIB$$331463cd.CGLIB$cassandraConverter$14(<generated>) ~[classes/:na]
at lowleveldesign.facebook.api.configurations.CassandraConfiguration$$EnhancerBySpringCGLIB$$331463cd$$FastClassBySpringCGLIB$$bc26daf7.invoke(<generated>) ~[classes/:na]
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244) ~[spring-core-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:331) ~[spring-context-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at lowleveldesign.facebook.api.configurations.CassandraConfiguration$$EnhancerBySpringCGLIB$$331463cd.cassandraConverter(<generated>) ~[classes/:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:566) ~[na:na]
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
... 21 common frames omitted
Caused by: java.lang.IllegalStateException: Since you provided explicit contact points, the local DC must be explicitly set (see basic.load-balancing-policy.local-datacenter in the config, or set it programmatically with SessionBuilder.withLocalDatacenter). Current contact points are: Node(endPoint=localhost:9042, hostId=de774b94-e7c4-4486-a75f-fda45e16e53f, hashCode=4ecec333)=datacenter1. Current DCs in this cluster are: datacenter1
at com.datastax.oss.driver.internal.core.loadbalancing.helper.MandatoryLocalDcHelper.discoverLocalDc(MandatoryLocalDcHelper.java:91) ~[java-driver-core-4.6.1.jar:na]
at com.datastax.oss.driver.internal.core.loadbalancing.DefaultLoadBalancingPolicy.discoverLocalDc(DefaultLoadBalancingPolicy.java:118) ~[java-driver-core-4.6.1.jar:na]
at com.datastax.oss.driver.internal.core.loadbalancing.BasicLoadBalancingPolicy.init(BasicLoadBalancingPolicy.java:126) ~[java-driver-core-4.6.1.jar:na]
at com.datastax.oss.driver.internal.core.loadbalancing.DefaultLoadBalancingPolicy.init(DefaultLoadBalancingPolicy.java:109) ~[java-driver-core-4.6.1.jar:na]
at com.datastax.oss.driver.internal.core.metadata.LoadBalancingPolicyWrapper.init(LoadBalancingPolicyWrapper.java:121) ~[java-driver-core-4.6.1.jar:na]
at com.datastax.oss.driver.internal.core.session.DefaultSession$SingleThreaded.afterInitialSchemaRefresh(DefaultSession.java:444) ~[java-driver-core-4.6.1.jar:na]
at com.datastax.oss.driver.internal.core.session.DefaultSession$SingleThreaded.lambda$afterInitialNodeListRefresh$5(DefaultSession.java:434) ~[java-driver-core-4.6.1.jar:na]
at java.base/java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:859) ~[na:na]
at java.base/java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:837) ~[na:na]
at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:506) ~[na:na]
at java.base/java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:2073) ~[na:na]
at com.datastax.oss.driver.internal.core.metadata.MetadataManager$SingleThreaded.lambda$startSchemaRequest$1(MetadataManager.java:443) ~[java-driver-core-4.6.1.jar:na]
at java.base/java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:859) ~[na:na]
at java.base/java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:837) ~[na:na]
at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:506) ~[na:na]
at java.base/java.util.concurrent.CompletableFuture.postFire(CompletableFuture.java:610) ~[na:na]
at java.base/java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:649) ~[na:na]
at java.base/java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:478) ~[na:na]
at io.netty.channel.DefaultEventLoop.run(DefaultEventLoop.java:54) ~[netty-transport-4.1.52.Final.jar:4.1.52.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989) ~[netty-common-4.1.52.Final.jar:4.1.52.Final]
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[netty-common-4.1.52.Final.jar:4.1.52.Final]
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) ~[netty-common-4.1.52.Final.jar:4.1.52.Final]
at java.base/java.lang.Thread.run(Thread.java:834) ~[na:na]
Need help in connecting to cassandra from spring boot application.

Answer 1

Contact-points need to be pointing to an ip address. Remove cluster-name from the config.
spring:
data:
cassandra:
keyspace-name: test-keyspace
port: 9042
contact-points: 127.0.0.1
Replace the 127.0.0.1 by the real address of your seed.

Answer 2

spring.data.cassandra.keyspace-name=yourkeyspace-name
spring.data.cassandra.port=9042
spring.data.cassandra.contact-points=127.0.0.1
spring.data.cassandra.local-datacenter=datacenter1
add above properties to application.properties inside your application

Answer 3

Before providing the DC name, I was also getting the build error. Below are properties I used for a successful build.
spring.data.cassandra.keyspace-name=test_keyspace
spring.data.cassandra.contact-points=localhost
spring.data.cassandra.port=9042
spring.data.cassandra.local-datacenter=datacenter1
spring.data.cassandra.schema-action=NONE