Exception when searching with sort
----------------------------------
Key: NUTCH-287
URL: http://issues.apache.org/jira/browse/NUTCH-287
Project: Nutch
Type: Bug
Components: searcher
Versions: 0.8-dev
Reporter: Stefan Neufeind
Priority: Critical
Running a search with &sort=url works.
But when using &sort=title I get the following exception.
2006-05-25 14:04:25 StandardWrapperValve[jsp]: Servlet.service() for servlet
jsp threw exception
java.lang.RuntimeException: Unknown sort value type!
at
org.apache.nutch.searcher.IndexSearcher.translateHits(IndexSearcher.java:157)
at org.apache.nutch.searcher.IndexSearcher.search(IndexSearcher.java:95)
at org.apache.nutch.searcher.NutchBean.search(NutchBean.java:239)
at org.apache.jsp.search_jsp._jspService(search_jsp.java:257)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at
org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at
org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)
What is in those lines is:
WritableComparable sortValue; // convert value to writable
if (sortField == null) {
sortValue = new FloatWritable(scoreDocs[i].score);
} else {
Object raw = ((FieldDoc)scoreDocs[i]).fields[0];
if (raw instanceof Integer) {
sortValue = new IntWritable(((Integer)raw).intValue());
} else if (raw instanceof Float) {
sortValue = new FloatWritable(((Float)raw).floatValue());
} else if (raw instanceof String) {
sortValue = new UTF8((String)raw);
} else {
throw new RuntimeException("Unknown sort value type!");
}
}
So I thought that maybe raw is an instance of something "strange" and tried
raw.getClass().getName() or also raw.toString() to track the cause down - but
that always resulted in a NullPointerException. So it seems I'm having raw
being null for some strange reason.
When I try with "title2" (or something none-existing) I get a different error
that title2 is unknown / not indexed. So I suspect that title should be fine
here ...
If there is any information I can help out with, let me know.
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