Minor Camel parent defines 1.4.1.RELEASE spring boot version:
https://github.com/jboss-fuse/camel/blob/camel-2.18.1.redhat-000004/parent/pom.xml#L544
Spring boot dependencies with version 1.4.1.RELEASE define 2.4.0 version of elasticsearch
https://github.com/spring-projects/spring-boot/blob/v1.4.1.RELEASE/spring-boot-dependencies/pom.xml#L76
But camel parent defines 2.3.5 version of elasticsearch
https://github.com/jboss-fuse/camel/blob/camel-2.18.1.redhat-000004/parent/pom.xml#L173
So when we use spring boot dependencies as well as the camel parent within dependency management, the version of camel-parent is overwritten by version from spring boot dependencies and it raise the given error.
java.lang.NoClassDefFoundError: Could not initialize class org.elasticsearch.Version
at org.elasticsearch.node.Node.<init>(Node.java:140)
at org.elasticsearch.node.NodeBuilder.build(NodeBuilder.java:143)
at org.elasticsearch.node.NodeBuilder.node(NodeBuilder.java:150)
at org.apache.camel.component.elasticsearch.ElasticsearchEndpoint.doStart(ElasticsearchEndpoint.java:105)
at org.apache.camel.support.ServiceSupport.start(ServiceSupport.java:61)
at org.apache.camel.util.ServiceHelper.startService(ServiceHelper.java:75)
at org.apache.camel.processor.SendProcessor.doStart(SendProcessor.java:236)
at org.apache.camel.support.ServiceSupport.start(ServiceSupport.java:61)
at org.apache.camel.util.ServiceHelper.startService(ServiceHelper.java:75)
at org.apache.camel.util.ServiceHelper.startService(ServiceHelper.java:60)
at org.apache.camel.util.ServiceHelper.startServices(ServiceHelper.java:104)
at org.apache.camel.util.ServiceHelper.startServices(ServiceHelper.java:90)
at org.apache.camel.processor.DelegateAsyncProcessor.doStart(DelegateAsyncProcessor.java:80)
at org.apache.camel.support.ServiceSupport.start(ServiceSupport.java:61)
at org.apache.camel.util.ServiceHelper.startService(ServiceHelper.java:75)