Thanks for the reply.
* Following are the jars placed in "tomcat/lib" dir: annotations-api.jar el-api.jar jsp-api.jar lucene-core.jar solr-core-1.3.0.jar tomcat-dbcp.jar catalina-ant.jar jasper-el.jar jul-to-slf4j-1.6.6.jar private solr-dataimporthandler-4.4.0.jar tomcat-i18n-es.jar catalina-ha.jar jasper.jar log4j-1.2.16.jar servlet-api.jar solr-dataimporthandler-extras-4.4.0.jar tomcat-i18n-fr.jar catalina.jar jasper-jdt.jar log4j.properties slf4j-api-1.6.6.jar solr-solrj-4.4.0.jar tomcat-i18n-ja.jar catalina-tribes.jar jcl-over-slf4j-1.6.6.jar lucene-analyzers-common-4.2.0.jar slf4j-log4j12-1.6.6.jar tomcat-coyote.jar Jars in "tomcat/ webapps/ROOT/WEB-INF/lib/" commons-cli-1.2.jar hadoop-common-2.0.5-alpha.jar lucene-core-4.4.0.jar nps-solr-plugin-1.0-SNAPSHOT.jar commons-codec-1.7.jar hadoop-hdfs-2.0.5-alpha.jar lucene-grouping-4.4.0.jar org.restlet-2.1.1.jar commons-configuration-1.6.jar httpclient-4.2.3.jar lucene-highlighter-4.4.0.jar org.restlet.ext.servlet-2.1.1.jar commons-fileupload-1.2.1.jar httpcore-4.2.2.jar lucene-memory-4.4.0.jar protobuf-java-2.4.0a.jar commons-io-2.1.jar httpmime-4.2.3.jar lucene-misc-4.4.0.jar solr-core-4.4.0.jar commons-lang-2.6.jar joda-time-2.2.jar lucene-queries-4.4.0.jar solr-dataimporthandler-4.4.0.jar concurrentlinkedhashmap-lru-1.2.jar lucene-analyzers-common-4.4.0.jar lucene-queryparser-4.4.0.jar solr-solrj-4.4.0.jar guava-14.0.1.jar lucene-analyzers-kuromoji-4.4.0.jar lucene-spatial-4.4.0.jar spatial4j-0.3.jar hadoop-annotations-2.0.5-alpha.jar lucene-analyzers-phonetic-4.4.0.jar lucene-suggest-4.4.0.jar wstx-asl-3.2.7.jar hadoop-auth-2.0.5-alpha.jar lucene-codecs-4.4.0.jar noggit-0.5.jar zookeeper-3.4.5.jar * I downloaded solr-4.4.0 instance from apache website. (http://www.apache.org/dyn/closer.cgi/lucene/solr/4.4.0) Most of the jars are from the "dist" directory and "example" directory. * Custom jars are compiled for Solr 4.4.0 version. I copied most of the jars from apache website. And few jars from www.java2s.com Thanks Abhi -----Original Message----- From: Chris Hostetter [mailto:hossman_luc...@fucit.org] Sent: Wednesday, September 18, 2013 1:41 PM To: solr-user@lucene.apache.org Subject: Re: Solr 4.4.0: Plugin init failure for [schema.xml] analyzer/tokenizer : I am having trouble in upgrading from Solr 3.6 to Solr 4.4.0. I have : placed required jars in "lib" directory. When I start the Tomcat : instance it throws following error. Also pasted part of : "conf/schema.xml" file. which jars exactly? where did you get the jars from? what version of solr were your custom jars compiled against : Caused by: java.lang.ClassCastException: class com.mycomp.as.sts.nps.solr.analysis.MultiValueTokenizerFactory According to that, your "MultiValueTokenizerFactory" can not be cast to the expected type -- this might be because of a classloader problem (ie: you may have multiple instances of the MultiValueTokenizerFactory class loaded that are confusing things, or multiple isntances of the lucene TokenizerFactory, etc... alternatively it might be because your MultiValueTokenizerFactory was compiled against the wrong version of solr (but IIRC that should genrate a diff error ... off the top of my head i'm not certain). -Hoss
