When creating an index, fail properly on classpath error

src/main/java/org/elasticsearch/indices/InternalIndicesService.java

@@ -284,6 +284,8 @@ public class InternalIndicesService extends AbstractLifecycleComponent<IndicesSe
         Injector indexInjector;
         try {
             indexInjector = modules.createChildInjector(injector);
+        } catch (NoClassDefFoundError e) {
+            throw new IndexCreationException(index, e);
         } catch (CreationException e) {
             throw new IndexCreationException(index, Injectors.getFirstErrorFailure(e));
         }