How do I make solr/jetty find the installed slf4j jars in Ubuntu 12.04?

Posted by J. Pablo Fernández on Server Fault See other posts from Server Fault or by J. Pablo Fernández
Published on 2013-06-27T20:20:24Z Indexed on 2013/06/27 22:22 UTC
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I'm running Ubuntu 12.04's packaged Jetty in which I installed solr 4.3.1 (by copying the war file to /var/lib/jetty/webapps. When I start Jetty, I get this error:

failed SolrRequestFilter: org.apache.solr.common.SolrException: Could not find necessary SLF4j logging jars. If using Jetty, the SLF4j logging jars need to go in the jetty lib/ext directory.

The package libslf4j-java is installed, and the jars are in /usr/share/java:

/usr/share/java/log4j-over-slf4j.jar
/usr/share/java/slf4j-api.jar
/usr/share/java/slf4j-jcl.jar
/usr/share/java/slf4j-jdk14.jar
/usr/share/java/slf4j-log4j12.jar
/usr/share/java/slf4j-migrator.jar
/usr/share/java/slf4j-nop.jar
/usr/share/java/slf4j-simple.jar

but somehow, Jetty and/or Solr are not finding them. How do I make them find them? or how do I install some other jars where jetty/solr would find them?

The full error is:

88 [main] INFO org.mortbay.log - jetty-6.1.24
443 [main] INFO org.mortbay.log - Deploy /etc/jetty/contexts/javadoc.xml -> org.mortbay.jetty.handler.ContextHandler@cec0c5{/javadoc,file:/usr/share/jetty/javadoc}
522 [main] INFO org.mortbay.log - Extract file:/var/lib/jetty/webapps/solr.war to /var/cache/jetty/data/Jetty__8080_solr.war__solr__zdafkg/webapp
1501 [main] WARN org.mortbay.log - failed SolrRequestFilter: org.apache.solr.common.SolrException: Could not find necessary SLF4j logging jars. If using Jetty, the SLF4j logging jars need to go in the jetty lib/ext directory. For other containers, the corresponding directory should be used. For more information, see: http://wiki.apache.org/solr/SolrLogging
1501 [main] ERROR org.mortbay.log - Failed startup of context org.mortbay.jetty.webapp.WebAppContext@5329c5{/solr,file:/var/lib/jetty/webapps/solr.war}
org.apache.solr.common.SolrException: Could not find necessary SLF4j logging jars. If using Jetty, the SLF4j logging jars need to go in the jetty lib/ext directory. For other containers, the corresponding directory should be used. For more information, see: http://wiki.apache.org/solr/SolrLogging
    at org.apache.solr.servlet.SolrDispatchFilter.<init>(SolrDispatchFilter.java:105)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:532)
    at java.lang.Class.newInstance0(Class.java:374)
    at java.lang.Class.newInstance(Class.java:327)
    at org.mortbay.jetty.servlet.Holder.newInstance(Holder.java:153)
    at org.mortbay.jetty.servlet.FilterHolder.doStart(FilterHolder.java:92)
    at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
    at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:662)
    at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
    at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250)
    at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:518)
    at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467)
    at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
    at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
    at org.mortbay.jetty.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:156)
    at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
    at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
    at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
    at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
    at org.mortbay.jetty.Server.doStart(Server.java:224)
    at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
    at org.mortbay.xml.XmlConfiguration.main(XmlConfiguration.java:985)
    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.mortbay.start.Main.invokeMain(Main.java:194)
    at org.mortbay.start.Main.start(Main.java:534)
    at org.mortbay.jetty.start.daemon.Bootstrap.start(Bootstrap.java:30)
    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.commons.daemon.support.DaemonLoader.start(DaemonLoader.java:243)
Caused by: java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory
    at org.apache.solr.servlet.SolrDispatchFilter.<init>(SolrDispatchFilter.java:103)
    ... 36 more
Caused by: java.lang.ClassNotFoundException: org.slf4j.LoggerFactory
    at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
    at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:392)
    at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:363)
    ... 37 more
1505 [main] WARN org.mortbay.log - failed org.mortbay.jetty.webapp.WebAppContext@5329c5{/solr,file:/var/lib/jetty/webapps/solr.war}: java.lang.NoClassDefFoundError: org/slf4j/Logger
1579 [main] WARN org.mortbay.log - failed ContextHandlerCollection@19d0a1: java.lang.NoClassDefFoundError: org/slf4j/Logger
1582 [main] INFO org.mortbay.log - Opened /var/log/jetty/2013_06_27.request.log
1582 [main] WARN org.mortbay.log - failed HandlerCollection@cbf30e: java.lang.NoClassDefFoundError: org/slf4j/Logger
1582 [main] ERROR org.mortbay.log - Error starting handlers
java.lang.NoClassDefFoundError: org/slf4j/Logger
    at java.lang.Class.getDeclaredMethods0(Native Method)
    at java.lang.Class.privateGetDeclaredMethods(Class.java:2454)
    at java.lang.Class.getMethod0(Class.java:2697)
    at java.lang.Class.getMethod(Class.java:1622)
    at org.mortbay.log.Log.unwind(Log.java:228)
    at org.mortbay.log.Log.warn(Log.java:197)
    at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:475)
    at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
    at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
    at org.mortbay.jetty.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:156)
    at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
    at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
    at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
    at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
    at org.mortbay.jetty.Server.doStart(Server.java:224)
    at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
    at org.mortbay.xml.XmlConfiguration.main(XmlConfiguration.java:985)
    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.mortbay.start.Main.invokeMain(Main.java:194)
    at org.mortbay.start.Main.start(Main.java:534)
    at org.mortbay.jetty.start.daemon.Bootstrap.start(Bootstrap.java:30)
    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.commons.daemon.support.DaemonLoader.start(DaemonLoader.java:243)
Caused by: java.lang.ClassNotFoundException: org.slf4j.Logger
    at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
    at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:392)
    at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:363)
    ... 29 more

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