Hi, If I recall correctly this problem relate to the class loader path.
make sure that the ./lib (solr home, were you've replaced the jars) is not also part of the Tomcat class loader path. (in other words solr and Tomcat cannot share the same ./lib directories.) -Ariel -----Original Message----- From: ravi koshal [mailto:ravikosha...@gmail.com] Sent: Tuesday, October 15, 2013 10:10 AM To: solr-user@lucene.apache.org Subject: Re: ClusteringComponent under Tomcat 7 Hi Lieberman, I am facing the same issue. were you able to resolve this? I am able to see the solr home , but the cores do not appear. my stack trace is as follows : org.apache.solr.common.SolrException: Error Instantiating SearchComponent, solr.clustering.ClusteringComponent failed to instantiate org.apache.solr.handler.component.SearchComponent at org.apache.solr.core.SolrCore.<init>(SolrCore.java:834) at org.apache.solr.core.SolrCore.<init>(SolrCore.java:625) at org.apache.solr.core.CoreContainer.createFromLocal(CoreContainer.java:524) at org.apache.solr.core.CoreContainer.create(CoreContainer.java:559) at org.apache.solr.core.CoreContainer$1.call(CoreContainer.java:249) at org.apache.solr.core.CoreContainer$1.call(CoreContainer.java:241) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Caused by: org.apache.solr.common.SolrException: Error Instantiating SearchComponent, solr.clustering.ClusteringComponent failed to instantiate org.apache.solr.handler.component.SearchComponent at org.apache.solr.core.SolrCore.createInstance(SolrCore.java:547) at org.apache.solr.core.SolrCore.createInitInstance(SolrCore.java:582) at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:2128) at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:2122) at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:2155) at org.apache.solr.core.SolrCore.loadSearchComponents(SolrCore.java:1177) at org.apache.solr.core.SolrCore.<init>(SolrCore.java:762) ... 11 more Caused by: java.lang.ClassCastException: class org.apache.solr.handler.clustering.ClusteringComponent at java.lang.Class.asSubclass(Unknown Source) at org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:44 3) at org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:38 1) at org.apache.solr.core.SolrCore.createInstance(SolrCore.java:526) Lieberman, Ariel <Ariel.Lieberman <at> verint.com> writes: > > Hi, > > I'm trying to run Solr 4.3 (and 4.4) with > -Dsolr.clustering.enabled=true > > I've copied all relevant jars to ./lib directory under the instance. > > With jetty it runs OK! But, under Tomcat I receives the error > (exception) below. > > Any idea/help? > > Thanks, > > -Ariel > > org.apache.solr.common.SolrException: Error Instantiating > SearchComponent, solr.clustering.ClusteringComponent failed to > instantiate org.apache.solr.handler.component.SearchComponent > at org.apache.solr.core.SolrCore.<init>(SolrCore.java:835) > at org.apache.solr.core.SolrCore.<init>(SolrCore.java:629) > at org.apache.solr.core.CoreContainer.createFromLocal(CoreContainer.java:622) > at org.apache.solr.core.CoreContainer.create(CoreContainer.java:657) > at org.apache.solr.core.CoreContainer$1.call(CoreContainer.java:364) > at org.apache.solr.core.CoreContainer$1.call(CoreContainer.java:356) > at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) > at java.util.concurrent.FutureTask.run(Unknown Source) > at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) > at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) > at java.util.concurrent.FutureTask.run(Unknown Source) > at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) > at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) > at java.lang.Thread.run(Unknown Source) Caused by: > org.apache.solr.common.SolrException: Error Instantiating SearchComponent, > solr.clustering.ClusteringComponent failed to instantiate org.apache.solr.handler.component.SearchComponent > at org.apache.solr.core.SolrCore.createInstance(SolrCore.java:551) > at org.apache.solr.core.SolrCore.createInitInstance(SolrCore.java:586) > at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:2173) > at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:2167) > at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:2200) > at org.apache.solr.core.SolrCore.loadSearchComponents(SolrCore.java:1231) > at org.apache.solr.core.SolrCore.<init>(SolrCore.java:766) > ... 13 more > Caused by: java.lang.ClassCastException: class org.apache.solr.handler.clustering.ClusteringComponent > at java.lang.Class.asSubclass(Unknown Source) > at org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:44 3) > at org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:38 1) > at org.apache.solr.core.SolrCore.createInstance(SolrCore.java:530) > ... 19 more > ERROR - 2013-09-29 05:58:13.519; org.apache.solr.common.SolrException; > null:org.apache.solr.common.SolrException: Unable to create core: att150K > at org.apache.solr.core.CoreContainer.recordAndThrow(CoreContainer.java:1150) > at org.apache.solr.core.CoreContainer.create(CoreContainer.java:666) > at org.apache.solr.core.CoreContainer$1.call(CoreContainer.java:364) > at org.apache.solr.core.CoreContainer$1.call(CoreContainer.java:356) > at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) > at java.util.concurrent.FutureTask.run(Unknown Source) > at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) > at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) > at java.util.concurrent.FutureTask.run(Unknown Source) > at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) > at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) > at java.lang.Thread.run(Unknown Source) Caused by: > org.apache.solr.common.SolrException: Error Instantiating SearchComponent, > solr.clustering.ClusteringComponent failed to instantiate org.apache.solr.handler.component.SearchComponent > at org.apache.solr.core.SolrCore.<init>(SolrCore.java:835) > at org.apache.solr.core.SolrCore.<init>(SolrCore.java:629) > at org.apache.solr.core.CoreContainer.createFromLocal(CoreContainer.java:622) > at org.apache.solr.core.CoreContainer.create(CoreContainer.java:657) > ... 10 more > Caused by: org.apache.solr.common.SolrException: Error Instantiating SearchComponent, > solr.clustering.ClusteringComponent failed to instantiate org.apache.solr.handler.component.SearchComponent > at org.apache.solr.core.SolrCore.createInstance(SolrCore.java:551) > at org.apache.solr.core.SolrCore.createInitInstance(SolrCore.java:586) > at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:2173) > at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:2167) > at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:2200) > at org.apache.solr.core.SolrCore.loadSearchComponents(SolrCore.java:1231) > at org.apache.solr.core.SolrCore.<init>(SolrCore.java:766) > ... 13 more > Caused by: java.lang.ClassCastException: class org.apache.solr.handler.clustering.ClusteringComponent > at java.lang.Class.asSubclass(Unknown Source) > at org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:44 3) > at org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:38 1) > at org.apache.solr.core.SolrCore.createInstance(SolrCore.java:530) > ... 19 more > > This electronic message may contain proprietary and confidential information of Verint Systems Inc., > its affiliates and/or subsidiaries. > The information is intended to be for the use of the individual(s) or entity(ies) named above. > If you are not the intended recipient (or authorized to receive this > e- mail for the intended recipient), > you may not use, copy, disclose or distribute to anyone this message > or any information contained in this message. > If you have received this electronic message in error, please notify > us by replying to this e-mail. > This electronic message may contain proprietary and confidential information of Verint Systems Inc., its affiliates and/or subsidiaries. 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