Re: Unable to register IndexingFilter extesion plugin - N 0.9

[Joel Halbert]

Hi Raymond,

Thanks for the suggestion - sorry I was obfuscating the names a little
in the example - but yes the plugin name matches that of the jar - but
the problem is still the same...it looks like it is a class external to
my plugin which it is having issues in loading?

Thx
Joel

-----Original Message-----
From: Raymond Balmès <raymond.bal...@gmail.com>
To: nutch-user@lucene.apache.org, j...@storequery.com
Subject: Re: Unable to register IndexingFilter extesion plugin - N 0.9
Date: Mon, 27 Apr 2009 22:58:12 +0200

I think you need to give the right name to your "plugin.jar" it should
be location-aware.jar.

-Ray-

2009/4/27 Joel Halbert <j...@storequery.com>
        Hi,
        
        I'm trying to register an simple extension point for my plugin -
        using
        nutch 0.9.
        
        I keep running into this exception from hadoop.log:
        
        
        2009-04-27 18:15:56,155 INFO  plugin.PluginRepository -
        Ontology
        Model Loader (org.apache.nutch.ontology.Ontology)
        2009-04-27 18:15:56,157 INFO  indexer.IndexingFilters - Adding
        org.apache.nutch.indexer.basic.BasicIndexingFilter
        2009-04-27 18:15:56,160 WARN  mapred.LocalJobRunner - job_oz369z
        java.lang.NoClassDefFoundError: IndexingFilter
               at java.lang.ClassLoader.defineClass1(Native Method)
               at
        java.lang.ClassLoader.defineClass(ClassLoader.java:621)
               at
        java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
               at
        java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
               at java.net.URLClassLoader.access
        $000(URLClassLoader.java:56)
               at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
               at java.security.AccessController.doPrivileged(Native
        Method)
               at
        java.net.URLClassLoader.findClass(URLClassLoader.java:188)
               at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
               at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
               at
        
org.apache.nutch.plugin.Extension.getExtensionInstance(Extension.java:156)
               at
        org.apache.nutch.indexer.IndexingFilters.<init>(IndexingFilters.java:68)
               at
        org.apache.nutch.indexer.Indexer.configure(Indexer.java:143)
               at
        org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:58)
               at
        
org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:82)
               at
        org.apache.hadoop.mapred.MapRunner.configure(MapRunner.java:34)
               at
        org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:58)
               at
        
org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:82)
               at org.apache.hadoop.mapred.MapTask.run(MapTask.java:170)
               at org.apache.hadoop.mapred.LocalJobRunner
        $Job.run(LocalJobRunner.java:126)
        Caused by: java.lang.ClassNotFoundException: IndexingFilter
               at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
               at java.security.AccessController.doPrivileged(Native
        Method)
               at
        java.net.URLClassLoader.findClass(URLClassLoader.java:188)
               at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
               at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
               at
        java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
               ... 20 more
        
        
        
        
        My config is pretty simple:
        
        nutch-site.xml
        
        <property>
         <name>plugin.includes</name>
         <value>protocol-http|urlfilter-regex|parse-(text|html|js)|
        index-basic|
        query-(basic|site|url)|summary-basic|scoring-opic|
        urlnormalizer-(pass|
        regex|basic)|location-aware</value>
        </property>
        
        
        
        plugin.xml
        
        <?xml version="1.0" encoding="UTF-8"?>
        <plugin
          id="location-aware"
          name="Location Aware Indexer"
          version="0.0.1"
          provider-name="myplugin.com">
        
          <runtime>
             <library name="myplugin.jar">
                <export name="*"/>
             </library>
          </runtime>
        
          <requires>
             <import plugin="nutch-extensionpoints"/>
          </requires>
        
          <extension id="com.myplugin"
                     name="My Plugin"
                     point="org.apache.nutch.indexer.IndexingFilter">
             <implementation id="MyPluginIndexingFilter"
        
         class="com.myplugin.MyPLuginIndexingFilter"/>
          </extension>
        
        </plugin>
        
        
        
        Thanks for any pointers.
        
        Joel