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I have a solr 5.2.1 instance and I want to create a new core named production. I had several issues with access rights which got solved, but the following exception is totally unclear to me. Help is appreciated.
org.apache.solr.common.SolrException: Error CREATEing SolrCore 'production': Unable to create core [production] Caused by: solr.JsonUpdateRequestHandler
at org.apache.solr.handler.admin.CoreAdminHandler.handleCreateAction(CoreAdminHandler.java:661)
at org.apache.solr.handler.admin.CoreAdminHandler.handleRequestInternal(CoreAdminHandler.java:213)
at org.apache.solr.handler.admin.CoreAdminHandler.handleRequestBody(CoreAdminHandler.java:193)
at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:143)
at org.apache.solr.servlet.HttpSolrCall.handleAdminRequest(HttpSolrCall.java:660)
at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:431)
at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:227)
at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:196)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:215)
at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:110)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
at org.eclipse.jetty.server.Server.handle(Server.java:497)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.solr.common.SolrException: Unable to create core [production]
at org.apache.solr.core.CoreContainer.create(CoreContainer.java:651)
at org.apache.solr.core.CoreContainer.create(CoreContainer.java:611)
at org.apache.solr.handler.admin.CoreAdminHandler.handleCreateAction(CoreAdminHandler.java:628)
... 27 more
Caused by: org.apache.solr.common.SolrException: Error loading class 'solr.JsonUpdateRequestHandler'
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:815)
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:658)
at org.apache.solr.core.CoreContainer.create(CoreContainer.java:637)
... 29 more
Caused by: org.apache.solr.common.SolrException: Error loading class 'solr.JsonUpdateRequestHandler'
at org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:491)
at org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:422)
at org.apache.solr.core.SolrCore.createInstance(SolrCore.java:566)
at org.apache.solr.core.PluginBag.createPlugin(PluginBag.java:122)
at org.apache.solr.core.PluginBag.init(PluginBag.java:217)
at org.apache.solr.core.RequestHandlers.initHandlersFromConfig(RequestHandlers.java:130)
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:768)
... 31 more
Caused by: java.lang.ClassNotFoundException: solr.JsonUpdateRequestHandler
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:793)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:278)
at org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:475)
335
In Solr, the term core is used to refer to a single index and associated transaction log and configuration files (including the solrconfig. xml and Schema files, among others).
For the solr delete command the -c <name> option is required while the other options (parameters) are optional. Delete the named Solr core or collection with default options. Solr will delete the specified core and its associated configuration files at the first port number found.
It seems that you are using an old version of solrconfig.xml. Class JsonUpdateRequestHandler was deprecated in latest Solr 4.x versions and was removed from Solr 5.x. You should use UpdateRequestHandler instead of it and update your solrconfig.xml according to your Solr version.
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