FAQ
I just migrated to Solr 3.5 and whenever i start it up i get the error
below. Any ideas what might be wrong? Previously i didn't have to do
anything special to get it to work. HAs anything changed in solr 3.5?


08-Dec-2011 10:45:03 org.apache.solr.common.SolrException log
SEVERE: org.apache.solr.common.SolrException: Error loading class
'solr.VelocityResponseWriter'
at
org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:389)
at org.apache.solr.core.SolrCore.createInstance(SolrCore.java:425)
at
org.apache.solr.core.SolrCore.createInitInstance(SolrCore.java:447)
at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:1556)
at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:1550)
at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:1583)
at org.apache.solr.core.SolrCore.initWriters(SolrCore.java:1466)
at org.apache.solr.core.SolrCore.(CoreContainer.java:463)
at org.apache.solr.core.CoreContainer.load(CoreContainer.java:316)
at org.apache.solr.core.CoreContainer.load(CoreContainer.java:207)
at
org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.java:130)
at
org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:94)
at
org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:295)
at
org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422)
at
org.apache.catalina.core.ApplicationFilterConfig.(StandardContext.java:4001)
at
org.apache.catalina.core.StandardContext.start(StandardContext.java:4651)
at
org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
at
org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
at
org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546)
at
org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:637)
at
org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:563)
at
org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:498)
at
org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277)
at
org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:321)
at
org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at
org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
at
org.apache.catalina.core.StandardHost.start(StandardHost.java:785)
at
org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at
org.apache.catalina.core.StandardEngine.start(StandardEngine.java:445)
at
org.apache.catalina.core.StandardService.start(StandardService.java:519)
at
org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:581)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
Caused by: java.lang.ClassNotFoundException: solr.VelocityResponseWriter
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:303)
at java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:592)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:316)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at
org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:373)
... 39 more

Search Discussions

  • Markus Jelsma at Dec 8, 2011 at 11:21 am
    From the changelog:


    187
    * SOLR-2588: Moved VelocityResponseWriter back to contrib module in order to
    188
    remove it as a mandatory core dependency. (Erik Hatcher)



    http://svn.apache.org/viewvc/lucene/dev/branches/branch_3x/solr/CHANGES.txt?view=markup


    I just migrated to Solr 3.5 and whenever i start it up i get the error
    below. Any ideas what might be wrong? Previously i didn't have to do
    anything special to get it to work. HAs anything changed in solr 3.5?


    08-Dec-2011 10:45:03 org.apache.solr.common.SolrException log
    SEVERE: org.apache.solr.common.SolrException: Error loading class
    'solr.VelocityResponseWriter'
    at
    org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:3
    89) at org.apache.solr.core.SolrCore.createInstance(SolrCore.java:425) at
    org.apache.solr.core.SolrCore.createInitInstance(SolrCore.java:447)
    at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:1556)
    at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:1550)
    at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:1583)
    at org.apache.solr.core.SolrCore.initWriters(SolrCore.java:1466)
    at org.apache.solr.core.SolrCore.<init>(SolrCore.java:556)
    at
    org.apache.solr.core.CoreContainer.create(CoreContainer.java:463) at
    org.apache.solr.core.CoreContainer.load(CoreContainer.java:316) at
    org.apache.solr.core.CoreContainer.load(CoreContainer.java:207) at
    org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.jav
    a:130) at
    org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:94)
    at
    org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilte
    rConfig.java:295) at
    org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFi
    lterConfig.java:422) at
    org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterCo
    nfig.java:115) at
    org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4
    001) at
    org.apache.catalina.core.StandardContext.start(StandardContext.java:4651)
    at
    org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:
    791) at
    org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
    at
    org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546)
    at
    org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:637
    ) at
    org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:56
    3) at
    org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:498)
    at
    org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277)
    at
    org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:321)
    at
    org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSuppo
    rt.java:119) at
    org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
    at
    org.apache.catalina.core.StandardHost.start(StandardHost.java:785)
    at
    org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
    at
    org.apache.catalina.core.StandardEngine.start(StandardEngine.java:445)
    at
    org.apache.catalina.core.StandardService.start(StandardService.java:519)
    at
    org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:581)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:3
    9) at
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImp
    l.java:25) at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
    Caused by: java.lang.ClassNotFoundException: solr.VelocityResponseWriter
    at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:303)
    at
    java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:592) at
    java.lang.ClassLoader.loadClass(ClassLoader.java:248)
    at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:316)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:247)
    at
    org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:3
    73) ... 39 more
  • Kissue Kissue at Dec 8, 2011 at 11:52 am
    Thanks Marcus. To resolve this problem i just added a shared lib folder for
    my cores and added the velocity jars in this folder and that resolved the
    error. I hope it was the right thing to do though.

    Thanks.


    On Thu, Dec 8, 2011 at 11:20 AM, Markus Jelsma
    wrote:
    From the changelog:


    187
    * SOLR-2588: Moved VelocityResponseWriter back to contrib module in order
    to
    188
    remove it as a mandatory core dependency. (Erik Hatcher)




    http://svn.apache.org/viewvc/lucene/dev/branches/branch_3x/solr/CHANGES.txt?view=markup


    I just migrated to Solr 3.5 and whenever i start it up i get the error
    below. Any ideas what might be wrong? Previously i didn't have to do
    anything special to get it to work. HAs anything changed in solr 3.5?


    08-Dec-2011 10:45:03 org.apache.solr.common.SolrException log
    SEVERE: org.apache.solr.common.SolrException: Error loading class
    'solr.VelocityResponseWriter'
    at
    org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:3
    89) at org.apache.solr.core.SolrCore.createInstance(SolrCore.java:425) at
    org.apache.solr.core.SolrCore.createInitInstance(SolrCore.java:447)
    at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:1556)
    at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:1550)
    at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:1583)
    at org.apache.solr.core.SolrCore.initWriters(SolrCore.java:1466)
    at org.apache.solr.core.SolrCore.<init>(SolrCore.java:556)
    at
    org.apache.solr.core.CoreContainer.create(CoreContainer.java:463) at
    org.apache.solr.core.CoreContainer.load(CoreContainer.java:316) at
    org.apache.solr.core.CoreContainer.load(CoreContainer.java:207) at
    org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.jav
    a:130) at
    org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:94)
    at
    org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilte
    rConfig.java:295) at
    org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFi
    lterConfig.java:422) at
    org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterCo
    nfig.java:115) at
    org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4
    001) at
    org.apache.catalina.core.StandardContext.start(StandardContext.java:4651)
    at
    org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:
    791) at
    org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
    at
    org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546)
    at
    org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:637
    ) at
    org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:56
    3) at
    org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:498)
    at
    org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277)
    at
    org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:321)
    at
    org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSuppo
    rt.java:119) at
    org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
    at
    org.apache.catalina.core.StandardHost.start(StandardHost.java:785)
    at
    org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
    at
    org.apache.catalina.core.StandardEngine.start(StandardEngine.java:445)
    at
    org.apache.catalina.core.StandardService.start(StandardService.java:519)
    at
    org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:581)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:3
    9) at
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImp
    l.java:25) at java.lang.reflect.Method.invoke(Method.java:597)
    at
    org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
    Caused by: java.lang.ClassNotFoundException: solr.VelocityResponseWriter
    at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:303)
    at
    java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:592) at
    java.lang.ClassLoader.loadClass(ClassLoader.java:248)
    at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:316)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:247)
    at
    org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:3
    73) ... 39 more
  • Erik Hatcher at Dec 9, 2011 at 9:22 pm
    My bad.

    To clarify the issue here... the problem manifests itself only on Solr 3.5 specifically when the example configuration is copied somewhere else (losing the relative path nature to the <lib> references). Generally this happens when folks want to deploy into Tomcat. In Solr 3.5, the VelocityResponseWriter was moved out of core and back to a contrib module. With this move, it became explicitly listed in the <lib> references by relative paths which are incorrect (not just for the VelocityResponseWriter but also for Solr Cell, Clustering, Data Import Handler, and the language identifier). All those other components are lazy loaded or not wired in by default so they don't cause a startup issue (but would not work!!!). The VelocityResponseWriter, however, is explicitly registered in the example configuration in solrconfig.xml as:

    <queryResponseWriter name="velocity" class="solr.VelocityResponseWriter" enable="${solr.velocity.enabled:true}"/>

    To fix the startup issue, if you don't want or care about the /browse interface or any other custom use of the VelocityResponseWriter you can either remove that line from solrconfig.xml (and restart Solr), or set the system property solr.velocity.enabled to false (something like doing <export JAVA_OPTS="$JAVA_OPTS -Dsolr.velocity.enabled=false"> before launching Tomcat) or set that default value to false in solrconfig.xml. Note that if you do hit /browse after you've disabled the VelocityResponseWriter, you will get the standard Solr XML response returned as that is how Solr handles an unknown response writer parameter. If you do want the VelocityResponseWriter to work, you'll need to correct the <lib> references in solrconfig.xml to point to the appropriate locations.

    Apologies for this issue. I juggle Solr 3.x's and Solr trunk and various snapshots of trunk and I typically don't use Tomcat.

    I've reopened https://issues.apache.org/jira/browse/SOLR-2718 to get it backported to 3.x in time for a Solr 3.6 release. I'll tackle this in a couple of weeks.

    I'm also going to start a new solr-user thread about the VelocityResponseWriter and solicit folks opinions regarding its future.

    Erik


    On Dec 8, 2011, at 06:03 , Kissue Kissue wrote:

    I just migrated to Solr 3.5 and whenever i start it up i get the error
    below. Any ideas what might be wrong? Previously i didn't have to do
    anything special to get it to work. HAs anything changed in solr 3.5?


    08-Dec-2011 10:45:03 org.apache.solr.common.SolrException log
    SEVERE: org.apache.solr.common.SolrException: Error loading class
    'solr.VelocityResponseWriter'
    at
    org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:389)
    at org.apache.solr.core.SolrCore.createInstance(SolrCore.java:425)
    at
    org.apache.solr.core.SolrCore.createInitInstance(SolrCore.java:447)
    at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:1556)
    at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:1550)
    at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:1583)
    at org.apache.solr.core.SolrCore.initWriters(SolrCore.java:1466)
    at org.apache.solr.core.SolrCore.<init>(SolrCore.java:556)
    at org.apache.solr.core.CoreContainer.create(CoreContainer.java:463)
    at org.apache.solr.core.CoreContainer.load(CoreContainer.java:316)
    at org.apache.solr.core.CoreContainer.load(CoreContainer.java:207)
    at
    org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.java:130)
    at
    org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:94)
    at
    org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:295)
    at
    org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422)
    at
    org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:115)
    at
    org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4001)
    at
    org.apache.catalina.core.StandardContext.start(StandardContext.java:4651)
    at
    org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
    at
    org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
    at
    org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546)
    at
    org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:637)
    at
    org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:563)
    at
    org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:498)
    at
    org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277)
    at
    org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:321)
    at
    org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
    at
    org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
    at
    org.apache.catalina.core.StandardHost.start(StandardHost.java:785)
    at
    org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
    at
    org.apache.catalina.core.StandardEngine.start(StandardEngine.java:445)
    at
    org.apache.catalina.core.StandardService.start(StandardService.java:519)
    at
    org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:581)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
    Caused by: java.lang.ClassNotFoundException: solr.VelocityResponseWriter
    at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:303)
    at java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:592)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
    at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:316)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:247)
    at
    org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:373)
    ... 39 more
  • Dipti Srivastava at Feb 2, 2012 at 6:22 pm
    Hi Erik,
    The latest release from the apache site for Solr 3.5 still has this issue.
    Where can I get a drop that has the fix for this issue?
    Thanks,
    Dipti
    On 12/9/11 1:22 PM, "Erik Hatcher" wrote:

    My bad.

    To clarify the issue here... the problem manifests itself only on Solr
    3.5 specifically when the example configuration is copied somewhere else
    (losing the relative path nature to the <lib> references). Generally
    this happens when folks want to deploy into Tomcat. In Solr 3.5, the
    VelocityResponseWriter was moved out of core and back to a contrib
    module. With this move, it became explicitly listed in the <lib>
    references by relative paths which are incorrect (not just for the
    VelocityResponseWriter but also for Solr Cell, Clustering, Data Import
    Handler, and the language identifier). All those other components are
    lazy loaded or not wired in by default so they don't cause a startup
    issue (but would not work!!!). The VelocityResponseWriter, however, is
    explicitly registered in the example configuration in solrconfig.xml as:

    <queryResponseWriter name="velocity"
    class="solr.VelocityResponseWriter"
    enable="${solr.velocity.enabled:true}"/>

    To fix the startup issue, if you don't want or care about the /browse
    interface or any other custom use of the VelocityResponseWriter you can
    either remove that line from solrconfig.xml (and restart Solr), or set
    the system property solr.velocity.enabled to false (something like doing
    <export JAVA_OPTS="$JAVA_OPTS -Dsolr.velocity.enabled=false"> before
    launching Tomcat) or set that default value to false in solrconfig.xml.
    Note that if you do hit /browse after you've disabled the
    VelocityResponseWriter, you will get the standard Solr XML response
    returned as that is how Solr handles an unknown response writer
    parameter. If you do want the VelocityResponseWriter to work, you'll
    need to correct the <lib> references in solrconfig.xml to point to the
    appropriate locations.

    Apologies for this issue. I juggle Solr 3.x's and Solr trunk and various
    snapshots of trunk and I typically don't use Tomcat.

    I've reopened https://issues.apache.org/jira/browse/SOLR-2718 to get it
    backported to 3.x in time for a Solr 3.6 release. I'll tackle this in a
    couple of weeks.

    I'm also going to start a new solr-user thread about the
    VelocityResponseWriter and solicit folks opinions regarding its future.

    Erik


    On Dec 8, 2011, at 06:03 , Kissue Kissue wrote:

    I just migrated to Solr 3.5 and whenever i start it up i get the error
    below. Any ideas what might be wrong? Previously i didn't have to do
    anything special to get it to work. HAs anything changed in solr 3.5?


    08-Dec-2011 10:45:03 org.apache.solr.common.SolrException log
    SEVERE: org.apache.solr.common.SolrException: Error loading class
    'solr.VelocityResponseWriter'
    at

    org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java
    :389)
    at
    org.apache.solr.core.SolrCore.createInstance(SolrCore.java:425)
    at
    org.apache.solr.core.SolrCore.createInitInstance(SolrCore.java:447)
    at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:1556)
    at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:1550)
    at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:1583)
    at org.apache.solr.core.SolrCore.initWriters(SolrCore.java:1466)
    at org.apache.solr.core.SolrCore.<init>(SolrCore.java:556)
    at
    org.apache.solr.core.CoreContainer.create(CoreContainer.java:463)
    at
    org.apache.solr.core.CoreContainer.load(CoreContainer.java:316)
    at
    org.apache.solr.core.CoreContainer.load(CoreContainer.java:207)
    at

    org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.j
    ava:130)
    at

    org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:9
    4)
    at

    org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFil
    terConfig.java:295)
    at

    org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(Application
    FilterConfig.java:422)
    at

    org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilter
    Config.java:115)
    at

    org.apache.catalina.core.StandardContext.filterStart(StandardContext.java
    :4001)
    at

    org.apache.catalina.core.StandardContext.start(StandardContext.java:4651)
    at

    org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.jav
    a:791)
    at
    org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
    at
    org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546)
    at

    org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:6
    37)
    at

    org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:
    563)
    at
    org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:498)
    at
    org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277)
    at

    org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:321
    )
    at

    org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSup
    port.java:119)
    at
    org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
    at
    org.apache.catalina.core.StandardHost.start(StandardHost.java:785)
    at
    org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
    at
    org.apache.catalina.core.StandardEngine.start(StandardEngine.java:445)
    at
    org.apache.catalina.core.StandardService.start(StandardService.java:519)
    at
    org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:581)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at

    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java
    :39)
    at

    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorI
    mpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at
    org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
    Caused by: java.lang.ClassNotFoundException: solr.VelocityResponseWriter
    at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:303)
    at
    java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:592)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
    at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:316)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:247)
    at

    org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java
    :373)
    ... 39 more

    This message is private and confidential. If you have received it in error, please notify the sender and remove it from your system.
  • Erik Hatcher at Feb 2, 2012 at 6:25 pm
    Dipti - the fix is purely configuration. There is no later version of Solr officially released at this point, but it has been corrected on the branch that will eventually become 3.6 (as well as the 4.0/trunk branch).

    Follow the instructions mentioned below to fix this in your environment.

    Erik
    On Feb 2, 2012, at 13:22 , Dipti Srivastava wrote:

    Hi Erik,
    The latest release from the apache site for Solr 3.5 still has this issue.
    Where can I get a drop that has the fix for this issue?
    Thanks,
    Dipti
    On 12/9/11 1:22 PM, "Erik Hatcher" wrote:

    My bad.

    To clarify the issue here... the problem manifests itself only on Solr
    3.5 specifically when the example configuration is copied somewhere else
    (losing the relative path nature to the <lib> references). Generally
    this happens when folks want to deploy into Tomcat. In Solr 3.5, the
    VelocityResponseWriter was moved out of core and back to a contrib
    module. With this move, it became explicitly listed in the <lib>
    references by relative paths which are incorrect (not just for the
    VelocityResponseWriter but also for Solr Cell, Clustering, Data Import
    Handler, and the language identifier). All those other components are
    lazy loaded or not wired in by default so they don't cause a startup
    issue (but would not work!!!). The VelocityResponseWriter, however, is
    explicitly registered in the example configuration in solrconfig.xml as:

    <queryResponseWriter name="velocity"
    class="solr.VelocityResponseWriter"
    enable="${solr.velocity.enabled:true}"/>

    To fix the startup issue, if you don't want or care about the /browse
    interface or any other custom use of the VelocityResponseWriter you can
    either remove that line from solrconfig.xml (and restart Solr), or set
    the system property solr.velocity.enabled to false (something like doing
    <export JAVA_OPTS="$JAVA_OPTS -Dsolr.velocity.enabled=false"> before
    launching Tomcat) or set that default value to false in solrconfig.xml.
    Note that if you do hit /browse after you've disabled the
    VelocityResponseWriter, you will get the standard Solr XML response
    returned as that is how Solr handles an unknown response writer
    parameter. If you do want the VelocityResponseWriter to work, you'll
    need to correct the <lib> references in solrconfig.xml to point to the
    appropriate locations.

    Apologies for this issue. I juggle Solr 3.x's and Solr trunk and various
    snapshots of trunk and I typically don't use Tomcat.

    I've reopened https://issues.apache.org/jira/browse/SOLR-2718 to get it
    backported to 3.x in time for a Solr 3.6 release. I'll tackle this in a
    couple of weeks.

    I'm also going to start a new solr-user thread about the
    VelocityResponseWriter and solicit folks opinions regarding its future.

    Erik


    On Dec 8, 2011, at 06:03 , Kissue Kissue wrote:

    I just migrated to Solr 3.5 and whenever i start it up i get the error
    below. Any ideas what might be wrong? Previously i didn't have to do
    anything special to get it to work. HAs anything changed in solr 3.5?


    08-Dec-2011 10:45:03 org.apache.solr.common.SolrException log
    SEVERE: org.apache.solr.common.SolrException: Error loading class
    'solr.VelocityResponseWriter'
    at

    org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java
    :389)
    at
    org.apache.solr.core.SolrCore.createInstance(SolrCore.java:425)
    at
    org.apache.solr.core.SolrCore.createInitInstance(SolrCore.java:447)
    at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:1556)
    at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:1550)
    at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:1583)
    at org.apache.solr.core.SolrCore.initWriters(SolrCore.java:1466)
    at org.apache.solr.core.SolrCore.<init>(SolrCore.java:556)
    at
    org.apache.solr.core.CoreContainer.create(CoreContainer.java:463)
    at
    org.apache.solr.core.CoreContainer.load(CoreContainer.java:316)
    at
    org.apache.solr.core.CoreContainer.load(CoreContainer.java:207)
    at

    org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.j
    ava:130)
    at

    org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:9
    4)
    at

    org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFil
    terConfig.java:295)
    at

    org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(Application
    FilterConfig.java:422)
    at

    org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilter
    Config.java:115)
    at

    org.apache.catalina.core.StandardContext.filterStart(StandardContext.java
    :4001)
    at

    org.apache.catalina.core.StandardContext.start(StandardContext.java:4651)
    at

    org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.jav
    a:791)
    at
    org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
    at
    org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546)
    at

    org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:6
    37)
    at

    org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:
    563)
    at
    org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:498)
    at
    org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277)
    at

    org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:321
    )
    at

    org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSup
    port.java:119)
    at
    org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
    at
    org.apache.catalina.core.StandardHost.start(StandardHost.java:785)
    at
    org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
    at
    org.apache.catalina.core.StandardEngine.start(StandardEngine.java:445)
    at
    org.apache.catalina.core.StandardService.start(StandardService.java:519)
    at
    org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:581)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at

    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java
    :39)
    at

    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorI
    mpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at
    org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
    Caused by: java.lang.ClassNotFoundException: solr.VelocityResponseWriter
    at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:303)
    at
    java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:592)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
    at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:316)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:247)
    at

    org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java
    :373)
    ... 39 more

    This message is private and confidential. If you have received it in error, please notify the sender and remove it from your system.
  • Dipti Srivastava at Feb 2, 2012 at 7:53 pm
    Hrik,
    Thanks for you response. I have a question though...
    Will I be able to access the solr/admin console after disabling the
    velocity response writer? If so I can disbale it.

    Otherwise, could you please advise on where and which libraries need to be
    copied and if any <lib> changes in solrconfig.xml are required.

    Thanks!
    DIPTI
    On 2/2/12 10:24 AM, "Erik Hatcher" wrote:

    Dipti - the fix is purely configuration. There is no later version of
    Solr officially released at this point, but it has been corrected on the
    branch that will eventually become 3.6 (as well as the 4.0/trunk branch).

    Follow the instructions mentioned below to fix this in your environment.

    Erik
    On Feb 2, 2012, at 13:22 , Dipti Srivastava wrote:

    Hi Erik,
    The latest release from the apache site for Solr 3.5 still has this
    issue.
    Where can I get a drop that has the fix for this issue?
    Thanks,
    Dipti
    On 12/9/11 1:22 PM, "Erik Hatcher" wrote:

    My bad.

    To clarify the issue here... the problem manifests itself only on Solr
    3.5 specifically when the example configuration is copied somewhere
    else
    (losing the relative path nature to the <lib> references). Generally
    this happens when folks want to deploy into Tomcat. In Solr 3.5, the
    VelocityResponseWriter was moved out of core and back to a contrib
    module. With this move, it became explicitly listed in the <lib>
    references by relative paths which are incorrect (not just for the
    VelocityResponseWriter but also for Solr Cell, Clustering, Data Import
    Handler, and the language identifier). All those other components are
    lazy loaded or not wired in by default so they don't cause a startup
    issue (but would not work!!!). The VelocityResponseWriter, however, is
    explicitly registered in the example configuration in solrconfig.xml
    as:

    <queryResponseWriter name="velocity"
    class="solr.VelocityResponseWriter"
    enable="${solr.velocity.enabled:true}"/>

    To fix the startup issue, if you don't want or care about the /browse
    interface or any other custom use of the VelocityResponseWriter you can
    either remove that line from solrconfig.xml (and restart Solr), or set
    the system property solr.velocity.enabled to false (something like
    doing
    <export JAVA_OPTS="$JAVA_OPTS -Dsolr.velocity.enabled=false"> before
    launching Tomcat) or set that default value to false in solrconfig.xml.
    Note that if you do hit /browse after you've disabled the
    VelocityResponseWriter, you will get the standard Solr XML response
    returned as that is how Solr handles an unknown response writer
    parameter. If you do want the VelocityResponseWriter to work, you'll
    need to correct the <lib> references in solrconfig.xml to point to the
    appropriate locations.

    Apologies for this issue. I juggle Solr 3.x's and Solr trunk and
    various
    snapshots of trunk and I typically don't use Tomcat.

    I've reopened https://issues.apache.org/jira/browse/SOLR-2718 to get it
    backported to 3.x in time for a Solr 3.6 release. I'll tackle this in
    a
    couple of weeks.

    I'm also going to start a new solr-user thread about the
    VelocityResponseWriter and solicit folks opinions regarding its future.

    Erik


    On Dec 8, 2011, at 06:03 , Kissue Kissue wrote:

    I just migrated to Solr 3.5 and whenever i start it up i get the error
    below. Any ideas what might be wrong? Previously i didn't have to do
    anything special to get it to work. HAs anything changed in solr 3.5?


    08-Dec-2011 10:45:03 org.apache.solr.common.SolrException log
    SEVERE: org.apache.solr.common.SolrException: Error loading class
    'solr.VelocityResponseWriter'
    at


    org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.ja
    va
    :389)
    at
    org.apache.solr.core.SolrCore.createInstance(SolrCore.java:425)
    at
    org.apache.solr.core.SolrCore.createInitInstance(SolrCore.java:447)
    at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:1556)
    at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:1550)
    at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:1583)
    at org.apache.solr.core.SolrCore.initWriters(SolrCore.java:1466)
    at org.apache.solr.core.SolrCore.<init>(SolrCore.java:556)
    at
    org.apache.solr.core.CoreContainer.create(CoreContainer.java:463)
    at
    org.apache.solr.core.CoreContainer.load(CoreContainer.java:316)
    at
    org.apache.solr.core.CoreContainer.load(CoreContainer.java:207)
    at


    org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer
    .j
    ava:130)
    at


    org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java
    :9
    4)
    at


    org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationF
    il
    terConfig.java:295)
    at


    org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(Applicati
    on
    FilterConfig.java:422)
    at


    org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilt
    er
    Config.java:115)
    at


    org.apache.catalina.core.StandardContext.filterStart(StandardContext.ja
    va
    :4001)
    at


    org.apache.catalina.core.StandardContext.start(StandardContext.java:465
    1)
    at


    org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.j
    av
    a:791)
    at

    org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
    at
    org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546)
    at


    org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java
    :6
    37)
    at


    org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.jav
    a:
    563)
    at
    org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:498)
    at
    org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277)
    at


    org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:3
    21
    )
    at


    org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleS
    up
    port.java:119)
    at
    org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
    at
    org.apache.catalina.core.StandardHost.start(StandardHost.java:785)
    at
    org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
    at
    org.apache.catalina.core.StandardEngine.start(StandardEngine.java:445)
    at

    org.apache.catalina.core.StandardService.start(StandardService.java:519
    )
    at
    org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:581)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at


    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.ja
    va
    :39)
    at


    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccesso
    rI
    mpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at
    org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
    at
    org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
    Caused by: java.lang.ClassNotFoundException:
    solr.VelocityResponseWriter
    at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:303)
    at
    java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:592)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
    at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:316)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:247)
    at


    org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.ja
    va
    :373)
    ... 39 more

    This message is private and confidential. If you have received it in
    error, please notify the sender and remove it from your system.

    This message is private and confidential. If you have received it in error, please notify the sender and remove it from your system.
  • Erik Hatcher at Feb 2, 2012 at 8:29 pm

    On Feb 2, 2012, at 14:54 , Dipti Srivastava wrote:

    Hrik,
    Thanks for you response. I have a question though...
    Will I be able to access the solr/admin console after disabling the
    velocity response writer? If so I can disbale it.
    The admin console in Solr does not use the velocity response writer, so no worries.
    Otherwise, could you please advise on where and which libraries need to be
    copied and if any <lib> changes in solrconfig.xml are required.
    Take a look at your solrconfig... if you've copied the example configuration and deployed into Tomcat, chances are all your <lib> references are incorrect. Point them to the place where the libraries live for the features you need.

    Erik
    Thanks!
    DIPTI
    On 2/2/12 10:24 AM, "Erik Hatcher" wrote:

    Dipti - the fix is purely configuration. There is no later version of
    Solr officially released at this point, but it has been corrected on the
    branch that will eventually become 3.6 (as well as the 4.0/trunk branch).

    Follow the instructions mentioned below to fix this in your environment.

    Erik
    On Feb 2, 2012, at 13:22 , Dipti Srivastava wrote:

    Hi Erik,
    The latest release from the apache site for Solr 3.5 still has this
    issue.
    Where can I get a drop that has the fix for this issue?
    Thanks,
    Dipti
    On 12/9/11 1:22 PM, "Erik Hatcher" wrote:

    My bad.

    To clarify the issue here... the problem manifests itself only on Solr
    3.5 specifically when the example configuration is copied somewhere
    else
    (losing the relative path nature to the <lib> references). Generally
    this happens when folks want to deploy into Tomcat. In Solr 3.5, the
    VelocityResponseWriter was moved out of core and back to a contrib
    module. With this move, it became explicitly listed in the <lib>
    references by relative paths which are incorrect (not just for the
    VelocityResponseWriter but also for Solr Cell, Clustering, Data Import
    Handler, and the language identifier). All those other components are
    lazy loaded or not wired in by default so they don't cause a startup
    issue (but would not work!!!). The VelocityResponseWriter, however, is
    explicitly registered in the example configuration in solrconfig.xml
    as:

    <queryResponseWriter name="velocity"
    class="solr.VelocityResponseWriter"
    enable="${solr.velocity.enabled:true}"/>

    To fix the startup issue, if you don't want or care about the /browse
    interface or any other custom use of the VelocityResponseWriter you can
    either remove that line from solrconfig.xml (and restart Solr), or set
    the system property solr.velocity.enabled to false (something like
    doing
    <export JAVA_OPTS="$JAVA_OPTS -Dsolr.velocity.enabled=false"> before
    launching Tomcat) or set that default value to false in solrconfig.xml.
    Note that if you do hit /browse after you've disabled the
    VelocityResponseWriter, you will get the standard Solr XML response
    returned as that is how Solr handles an unknown response writer
    parameter. If you do want the VelocityResponseWriter to work, you'll
    need to correct the <lib> references in solrconfig.xml to point to the
    appropriate locations.

    Apologies for this issue. I juggle Solr 3.x's and Solr trunk and
    various
    snapshots of trunk and I typically don't use Tomcat.

    I've reopened https://issues.apache.org/jira/browse/SOLR-2718 to get it
    backported to 3.x in time for a Solr 3.6 release. I'll tackle this in
    a
    couple of weeks.

    I'm also going to start a new solr-user thread about the
    VelocityResponseWriter and solicit folks opinions regarding its future.

    Erik


    On Dec 8, 2011, at 06:03 , Kissue Kissue wrote:

    I just migrated to Solr 3.5 and whenever i start it up i get the error
    below. Any ideas what might be wrong? Previously i didn't have to do
    anything special to get it to work. HAs anything changed in solr 3.5?


    08-Dec-2011 10:45:03 org.apache.solr.common.SolrException log
    SEVERE: org.apache.solr.common.SolrException: Error loading class
    'solr.VelocityResponseWriter'
    at


    org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.ja
    va
    :389)
    at
    org.apache.solr.core.SolrCore.createInstance(SolrCore.java:425)
    at
    org.apache.solr.core.SolrCore.createInitInstance(SolrCore.java:447)
    at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:1556)
    at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:1550)
    at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:1583)
    at org.apache.solr.core.SolrCore.initWriters(SolrCore.java:1466)
    at org.apache.solr.core.SolrCore.<init>(SolrCore.java:556)
    at
    org.apache.solr.core.CoreContainer.create(CoreContainer.java:463)
    at
    org.apache.solr.core.CoreContainer.load(CoreContainer.java:316)
    at
    org.apache.solr.core.CoreContainer.load(CoreContainer.java:207)
    at


    org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer
    .j
    ava:130)
    at


    org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java
    :9
    4)
    at


    org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationF
    il
    terConfig.java:295)
    at


    org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(Applicati
    on
    FilterConfig.java:422)
    at


    org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilt
    er
    Config.java:115)
    at


    org.apache.catalina.core.StandardContext.filterStart(StandardContext.ja
    va
    :4001)
    at


    org.apache.catalina.core.StandardContext.start(StandardContext.java:465
    1)
    at


    org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.j
    av
    a:791)
    at

    org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
    at
    org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546)
    at


    org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java
    :6
    37)
    at


    org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.jav
    a:
    563)
    at
    org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:498)
    at
    org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277)
    at


    org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:3
    21
    )
    at


    org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleS
    up
    port.java:119)
    at
    org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
    at
    org.apache.catalina.core.StandardHost.start(StandardHost.java:785)
    at
    org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
    at
    org.apache.catalina.core.StandardEngine.start(StandardEngine.java:445)
    at

    org.apache.catalina.core.StandardService.start(StandardService.java:519
    )
    at
    org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:581)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at


    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.ja
    va
    :39)
    at


    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccesso
    rI
    mpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at
    org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
    at
    org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
    Caused by: java.lang.ClassNotFoundException:
    solr.VelocityResponseWriter
    at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:303)
    at
    java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:592)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
    at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:316)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:247)
    at


    org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.ja
    va
    :373)
    ... 39 more

    This message is private and confidential. If you have received it in
    error, please notify the sender and remove it from your system.

    This message is private and confidential. If you have received it in error, please notify the sender and remove it from your system.
  • Rocky Wang at Feb 6, 2012 at 7:54 am
    I also just come across this issue. here are some tips:
    1. create "lib" dir under your own $SOLR_HOME dir
    2. copy .../dist/apache-solr-velocity-*-SNAPSHOT.jar to the dir
    3. create "contrib" dir under $SOLR_HOME
    4. copy all files under.../solr/contirb in solr source dir
    5. update your own solrconfig.xml config file,

    71 <lib dir="./contrib/extraction/lib" />
    72 <lib dir="./contrib/clustering/lib/" />
    73 <lib dir="./contrib/velocity/lib" />
    83 <lib dir="./contrib/clustering/lib/" />
    84 <lib dir="/total/crap/dir/ignored" />

    Hope this helps

    2012/2/3 Dipti Srivastava <Dipti.Srivastava@apollogrp.edu>:
    Hi Erik,
    The latest release from the apache site for Solr 3.5 still has this issue.
    Where can I get a drop that has the fix for this issue?
    Thanks,
    Dipti
    On 12/9/11 1:22 PM, "Erik Hatcher" wrote:

    My bad.

    To clarify the issue here... the problem manifests itself only on Solr
    3.5 specifically when the example configuration is copied somewhere else
    (losing the relative path nature to the <lib> references).  Generally
    this happens when folks want to deploy into Tomcat.  In Solr 3.5, the
    VelocityResponseWriter was moved out of core and back to a contrib
    module.  With this move, it became explicitly listed in the <lib>
    references by relative paths which are incorrect (not just for the
    VelocityResponseWriter but also for Solr Cell, Clustering, Data Import
    Handler, and the language identifier).  All those other components are
    lazy loaded or not wired in by default so they don't cause a startup
    issue (but would not work!!!).  The VelocityResponseWriter, however, is
    explicitly registered in the example configuration in solrconfig.xml as:

    <queryResponseWriter name="velocity"
    class="solr.VelocityResponseWriter"
    enable="${solr.velocity.enabled:true}"/>

    To fix the startup issue, if you don't want or care about the /browse
    interface or any other custom use of the VelocityResponseWriter you can
    either remove that line from solrconfig.xml (and restart Solr), or set
    the system property solr.velocity.enabled to false (something like doing
    <export JAVA_OPTS="$JAVA_OPTS -Dsolr.velocity.enabled=false"> before
    launching Tomcat) or set that default value to false in solrconfig.xml.
    Note that if you do hit /browse after you've disabled the
    VelocityResponseWriter, you will get the standard Solr XML response
    returned as that is how Solr handles an unknown response writer
    parameter.  If you do want the VelocityResponseWriter to work, you'll
    need to correct the <lib> references in solrconfig.xml to point to the
    appropriate locations.

    Apologies for this issue.  I juggle Solr 3.x's and Solr trunk and various
    snapshots of trunk and I typically don't use Tomcat.

    I've reopened https://issues.apache.org/jira/browse/SOLR-2718 to get it
    backported to 3.x in time for a Solr 3.6 release.  I'll tackle this in a
    couple of weeks.

    I'm also going to start a new solr-user thread about the
    VelocityResponseWriter and solicit folks opinions regarding its future.

    Erik


    On Dec 8, 2011, at 06:03 , Kissue Kissue wrote:

    I just migrated to Solr 3.5 and whenever i start it up i get the error
    below. Any ideas what might be wrong? Previously i didn't have to do
    anything special to get it to work. HAs anything changed in solr 3.5?


    08-Dec-2011 10:45:03 org.apache.solr.common.SolrException log
    SEVERE: org.apache.solr.common.SolrException: Error loading class
    'solr.VelocityResponseWriter'
    at

    org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java
    :389)
    at
    org.apache.solr.core.SolrCore.createInstance(SolrCore.java:425)
    at
    org.apache.solr.core.SolrCore.createInitInstance(SolrCore.java:447)
    at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:1556)
    at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:1550)
    at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:1583)
    at org.apache.solr.core.SolrCore.initWriters(SolrCore.java:1466)
    at org.apache.solr.core.SolrCore.<init>(SolrCore.java:556)
    at
    org.apache.solr.core.CoreContainer.create(CoreContainer.java:463)
    at
    org.apache.solr.core.CoreContainer.load(CoreContainer.java:316)
    at
    org.apache.solr.core.CoreContainer.load(CoreContainer.java:207)
    at

    org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.j
    ava:130)
    at

    org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:9
    4)
    at

    org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFil
    terConfig.java:295)
    at

    org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(Application
    FilterConfig.java:422)
    at

    org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilter
    Config.java:115)
    at

    org.apache.catalina.core.StandardContext.filterStart(StandardContext.java
    :4001)
    at

    org.apache.catalina.core.StandardContext.start(StandardContext.java:4651)
    at

    org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.jav
    a:791)
    at
    org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
    at
    org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546)
    at

    org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:6
    37)
    at

    org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:
    563)
    at
    org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:498)
    at
    org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277)
    at

    org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:321
    )
    at

    org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSup
    port.java:119)
    at
    org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
    at
    org.apache.catalina.core.StandardHost.start(StandardHost.java:785)
    at
    org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
    at
    org.apache.catalina.core.StandardEngine.start(StandardEngine.java:445)
    at
    org.apache.catalina.core.StandardService.start(StandardService.java:519)
    at
    org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:581)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at

    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java
    :39)
    at

    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorI
    mpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at
    org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
    Caused by: java.lang.ClassNotFoundException: solr.VelocityResponseWriter
    at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:303)
    at
    java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:592)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
    at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:316)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:247)
    at

    org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java
    :373)
    ... 39 more

    This message is private and confidential. If you have received it in error, please notify the sender and remove it from your system.


    --
    Juster

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postedDec 8, '11 at 11:04a
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