Ok, eu apenas configurei um servidor dedicado para meu cliente através de seu provedor de hospedagem. Eles têm plesk instalado lá (versão 9.2.1) e uma das advertências deste servidor dedicado é que, se eu fizer qualquer coisa FORA do painel de controle (ou seja, usar SSH) para qualquer tarefa, eles não garantem suporte para esse componente de software. Tudo bem, porque eu preferiria usar o painel de controle para fazer isso de qualquer maneira, já que tudo que eu tenho que fazer é carregar um arquivo war para instalar o servlet.

Aqui está o problema, porém, depois de instalar a versão mais recente do solr (1.3.0) recebi um ícone de aviso no plesk e ele me deu um erro vago como "O status real do aplicativo não corresponde ao status recuperado do banco de dados. "

Aqui está a entrada de log:

Aug 17, 2009 11:16:15 PM org.apache.solr.servlet.SolrDispatchFilter init
INFO: SolrDispatchFilter.init()
Aug 17, 2009 11:16:15 PM org.apache.solr.core.SolrResourceLoader
locateInstanceDir
INFO: Using JNDI solr.home: /usr/share/solr
Aug 17, 2009 11:16:15 PM
org.apache.solr.core.CoreContainer$Initializer initialize
INFO: looking for solr.xml: /usr/share/solr/solr.xml
Aug 17, 2009 11:16:15 PM org.apache.solr.core.SolrResourceLoader <init>
INFO: Solr home set to '/usr/share/solr/'
Aug 17, 2009 11:16:15 PM org.apache.solr.core.SolrResourceLoader
createClassLoader
INFO: Reusing parent classloader
Aug 17, 2009 11:16:15 PM org.apache.solr.servlet.SolrDispatchFilter init
SEVERE: Could not start SOLR. Check solr/home property
java.lang.ExceptionInInitializerError
       at org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.java:117)
       at org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:69)
       at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:221)
       at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:302)
       at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:78)
       at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3635)
       at org.apache.catalina.core.StandardContext.start(StandardContext.java:4222)
       at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014)
       at org.apache.catalina.core.StandardHost.start(StandardHost.java:736)
       at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014)
       at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
       at org.apache.catalina.core.StandardService.start(StandardService.java:448)
       at org.apache.catalina.core.StandardServer.start(StandardServer.java:700)
       at org.apache.catalina.startup.Catalina.start(Catalina.java:552)
       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
       at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
       at java.lang.reflect.Method.invoke(Method.java:616)
       at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295)
       at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:433)
Caused by: java.lang.RuntimeException: XPathFactory#newInstance()
failed to create an XPathFactory for the default object model:
http://java.sun.com/jaxp/xpath/dom with the
XPathFactoryConfigurationException:
javax.xml.xpath.XPathFactoryConfigurationException: No XPathFctory
implementation found for the object model:
http://java.sun.com/jaxp/xpath/dom
       at javax.xml.xpath.XPathFactory.newInstance(Unknown Source)
       at org.apache.solr.core.Config.<clinit>(Config.java:41)
       ... 20 more
Aug 17, 2009 11:16:15 PM org.apache.catalina.core.StandardContext filterStart
SEVERE: Exception starting filter SolrRequestFilter
java.lang.NoClassDefFoundError: Could not initialize class
org.apache.solr.core.SolrConfig
       at org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:76)
       at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:221)
       at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:302)
       at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:78)
       at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3635)
       at org.apache.catalina.core.StandardContext.start(StandardContext.java:4222)
       at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014)
       at org.apache.catalina.core.StandardHost.start(StandardHost.java:736)
       at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014)
       at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
       at org.apache.catalina.core.StandardService.start(StandardService.java:448)
       at org.apache.catalina.core.StandardServer.start(StandardServer.java:700)
       at org.apache.catalina.startup.Catalina.start(Catalina.java:552)
       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
       at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
       at java.lang.reflect.Method.invoke(Method.java:616)
       at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295)
       at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:433)
Aug 17, 2009 11:16:15 PM org.apache.catalina.core.StandardContext start
SEVERE: Error filterStart
Aug 17, 2009 11:16:15 PM org.apache.catalina.core.StandardContext start
SEVERE: Context [/solr] startup failed due to previous errors

O diretório solr / home existe, então por que o solr está reclamando disso?