Hello, Everybody i am trying to make a Naive Bayes Classifier available via a Servlet using Jetty mixing what is available at http://emmaespina.wordpress.com/2011/04/26/ham-spam-and-elephants-or-how-to-build-a-spam-filter-server-with-mahout/ and at http://emmaespina.wordpress.com/2011/04/26/ham-spam-and-elephants-or-how-to-build-a-spam-filter-server-with-mahout/
All the data setup training and testing processes seems to went well, using hadoop 2.4 or hadoop 1.2.1 and also using MAHOUT_LOCAL. The servlet is also up and running, i can access it via localhost:8080 and get my code executed However, i am having some problems with materializing the bayes model: NaiveBayesModel model = NaiveBayesModel.materialize(new Path(modelPath), configuration); Heres is the test post with curl (assuming ham.txt exists and has some text): curl http://localhost:8080/antispam -H “Content-T-Type: text/xml” –data-binary @ham.txt Here is the error i receive when i do the post: java.lang.IllegalArgumentException: Unknown flags set: %d [-1110101] at com.google.common.base.Preconditions.checkArgument(Preconditions.java:148) at org.apache.mahout.math.VectorWritable.readFields(VectorWritable.java:88) at org.apache.mahout.math.VectorWritable.readVector(VectorWritable.java:199) at org.apache.mahout.classifier.naivebayes.NaiveBayesModel.materialize(NaiveBayesModel.java:112) at org.example.SpamClassifier.classify(SpamClassifier.java:49) at org.example.SpamClassifierServlet.doPost(SpamClassifierServlet.java:24) at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:533) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:475) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:514) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:920) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:403) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:184) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:856) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117) at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:247) at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:151) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:114) at org.eclipse.jetty.server.Server.handle(Server.java:352) at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:596) at org.eclipse.jetty.server.HttpConnection$RequestHandler.content(HttpConnection.java:1066) at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:805) at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:218) at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:426) at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:510) at org.eclipse.jetty.io.nio.SelectChannelEndPoint.access$000(SelectChannelEndPoint.java:34) at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:40) at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:450) at java.lang.Thread.run(Thread.java:745) I've tried several paths and i got differente exceptions for file not found and things like this, so it is not a location problem, there should be something with the model binary file format. Am i missing something? The project is at github ( https://github.com/danielneis/mahout-spamclassifier-servlet ) , i’ve tried several versions of mahout/hadoop-common/hadoop-core/hadoop-hdfs in the pom file. Kind regards, Daniel -- Daniel Neis Araujo
