Hello,
I'm trying to use the knn classifier by following this link:
https://wiki.apache.org/solr/SolrClassification
I use this config :
<requestHandler name="/update" class="solr.UpdateRequestHandler">
<lst name="defaults">
<str name="update.chain">classification</str>
</lst>
</requestHandler>
and
<updateRequestProcessorChain name="classification">
<processor class="solr.ClassificationUpdateProcessorFactory">
<str name="inputFields">Title,Body</str>
<str name="classField">Tags</str>
<str name="predictedClassField">Tags</str>
<str name="algorithm">knn</str>
<str name="knn.k">20</str>
<str name="knn.minTf">1</str>
<str name="knn.minDf">5</str>
</processor>
<processor class="solr.LogUpdateProcessorFactory"/>
<processor class="solr.RunUpdateProcessorFactory" />
</updateRequestProcessorChain>
For the schema.xml :
<field name="Title" type="text_en" indexed="true" stored="true"
termVectors="true"/>
<field name="Body" type="text_en" indexed="true" stored="true"
termVectors="true"/>
<field name="Tags" type="strings" indexed="true" stored="true"
multiValued="true"/>
There's no error, even in the log.
It's like the updateRequestProcessorChain is not called. So I try with the
bayes and this error occurs :
java.lang.NullPointerException
at
org.apache.lucene.classification.document.SimpleNaiveBayesDocumentClassifier.assignNormClasses(SimpleNaiveBayesDocumentClassifier.java:116)
at
org.apache.lucene.classification.document.SimpleNaiveBayesDocumentClassifier.getClasses(SimpleNaiveBayesDocumentClassifier.java:106)
at
org.apache.solr.update.processor.ClassificationUpdateProcessor.processAdd(ClassificationUpdateProcessor.java:107)
at
org.apache.solr.handler.loader.JavabinLoader$1.update(JavabinLoader.java:98)
at
org.apache.solr.client.solrj.request.JavaBinUpdateRequestCodec$1.readOuterMostDocIterator(JavaBinUpdateRequestCodec.java:180)
at
org.apache.solr.client.solrj.request.JavaBinUpdateRequestCodec$1.readIterator(JavaBinUpdateRequestCodec.java:136)
at
org.apache.solr.common.util.JavaBinCodec.readObject(JavaBinCodec.java:306)
at
org.apache.solr.common.util.JavaBinCodec.readVal(JavaBinCodec.java:251)
at
org.apache.solr.client.solrj.request.JavaBinUpdateRequestCodec$1.readNamedList(JavaBinUpdateRequestCodec.java:122)
at
org.apache.solr.common.util.JavaBinCodec.readObject(JavaBinCodec.java:271)
at
org.apache.solr.common.util.JavaBinCodec.readVal(JavaBinCodec.java:251)
at
org.apache.solr.common.util.JavaBinCodec.unmarshal(JavaBinCodec.java:173)
at
org.apache.solr.client.solrj.request.JavaBinUpdateRequestCodec.unmarshal(JavaBinUpdateRequestCodec.java:187)
at
org.apache.solr.handler.loader.JavabinLoader.parseAndLoadDocs(JavabinLoader.java:108)
at
org.apache.solr.handler.loader.JavabinLoader.load(JavabinLoader.java:55)
at
org.apache.solr.handler.UpdateRequestHandler$1.load(UpdateRequestHandler.java:97)
at
org.apache.solr.handler.ContentStreamHandlerBase.handleRequestBody(ContentStreamHandlerBase.java:68)
at
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:173)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:2477)
at org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:723)
at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:529)
at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:361)
at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:305)
at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1691)
at
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:582)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at
org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)
at
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226)
at
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1180)
at
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:512)
at
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
at
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1112)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at
org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:213)
at
org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:119)
at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134)
at
org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:335)
at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134)
at org.eclipse.jetty.server.Server.handle(Server.java:534)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:320)
at
org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:251)
at
org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:273)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95)
at
org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:93)
at
org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:303)
at
org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)
at
org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136)
at
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)
at
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)
at java.lang.Thread.run(Thread.java:748)
What am I doing wrong ? Did I miss something ?
--
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