Hi, We have a custom java plugin that leverages the UpdateRequestProcessorFactory to push data to multiple cores when a single core is written to. We are building the plugin with maven, deploying it to /solr/lib and sourcing the jar via a lib directive in our solr config. It currently works correctly in our Solr 5.x cluster.
In Solr 7 when attempting to create the core, the plugin is failing with the long stack trace later in this post, but it seems to boil down to solr not finding a the Spring Context jar (Caused by: java.lang.ClassNotFoundException: org.springframework.context.ConfigurableApplicationContext The jar is imported in the file, and maven has a dependency to bring it in. The maven build works perfectly, the dependency is built and the jar is generated. Any ideas on a starting point for tracking this down? I’ve dug through a bunch of stack overflow’s with the same issue but not directly tied to solr and had no luck. Thanks! POM <dependency> <groupId>org.springframework</groupId> <artifactId>org.springframework.context</artifactId> <version>3.2.2.RELEASE</version> </dependency> Error ERROR - 2018-08-28 03:15:54.253; [c:vignette_de s:shard1 r:core_node5 x:vignette_de_shard1_replica_n2] org.apache.solr.handler.RequestHandlerBase; org.apache.solr.common.SolrException: Error CREATEing SolrCore 'vignette_de_shard1_replica_n2': Unable to create core [vignette_de_shard1_replica_n2] Caused by: org.springframework.context.ConfigurableApplicationContext at org.apache.solr.core.CoreContainer.create(CoreContainer.java:1084) at org.apache.solr.handler.admin.CoreAdminOperation.lambda$static$0(CoreAdminOperation.java:94) at org.apache.solr.handler.admin.CoreAdminOperation.execute(CoreAdminOperation.java:380) at org.apache.solr.handler.admin.CoreAdminHandler$CallInfo.call(CoreAdminHandler.java:395) at org.apache.solr.handler.admin.CoreAdminHandler.handleRequestBody(CoreAdminHandler.java:180) at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:199) at org.apache.solr.servlet.HttpSolrCall.handleAdmin(HttpSolrCall.java:734) at org.apache.solr.servlet.HttpSolrCall.handleAdminRequest(HttpSolrCall.java:715) at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:496) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:377) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:323) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1634) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:533) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:257) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1595) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1253) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:473) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1564) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1155) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144) at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:219) at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:126) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) at org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:335) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) at org.eclipse.jetty.server.Server.handle(Server.java:531) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:352) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:260) at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:281) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:102) at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:118) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126) at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:760) at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:678) at java.lang.Thread.run(Thread.java:748) Caused by: org.apache.solr.common.SolrException: Unable to create core [vignette_de_shard1_replica_n2] at org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1156) at org.apache.solr.core.CoreContainer.create(CoreContainer.java:1045) ... 44 more Caused by: org.apache.solr.common.SolrException: org/springframework/context/ConfigurableApplicationContext at org.apache.solr.core.SolrCore.<init>(SolrCore.java:1012) at org.apache.solr.core.SolrCore.<init>(SolrCore.java:867) at org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1135) ... 45 more Caused by: java.lang.NoClassDefFoundError: org/springframework/context/ConfigurableApplicationContext at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:348) at org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:541) at org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:488) at org.apache.solr.core.SolrCore.createInstance(SolrCore.java:790) at org.apache.solr.core.SolrCore.createInitInstance(SolrCore.java:846) at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:2808) at org.apache.solr.update.processor.UpdateRequestProcessorChain.init(UpdateRequestProcessorChain.java:130) at org.apache.solr.core.SolrCore.createInitInstance(SolrCore.java:848) at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:2783) at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:2777) at org.apache.solr.core.SolrCore.loadUpdateProcessorChains(SolrCore.java:1428) at org.apache.solr.core.SolrCore.<init>(SolrCore.java:968) ... 47 more Caused by: java.lang.ClassNotFoundException: org.springframework.context.ConfigurableApplicationContext at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:814) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 60 more