Hi, I am trying to write a plugin for nutch and am having real troubles getting it registered in the system. I have created in src/plugin and added it to both the build.xml in plugin and to nutch-site.xml now it seems to build ok but when I try to run a basic crawl urls -dir crawl -depth 3 -topN 2 I see the plugin registered in the hadoop.log
2009-11-14 14:57:45,739 INFO plugin.PluginRepository - Html Filter Parse Plug-in (parse-htmlfilter) But then get the error message below. I have followed all of the tutorials but they are mostly for nutch 0.9 and have error in them which I have worked through Thanks for your help regards, Dave java.lang.RuntimeException: org.apache.nutch.plugin.PluginRuntimeException: java.lang.ClassNotFoundException: org.apache.nutch.parse.htmlfilter.HtmlfilterIndexer at org.apache.nutch.indexer.IndexingFilters.<init>(IndexingFilters.java:100) at org.apache.nutch.indexer.IndexerMapReduce.configure(IndexerMapReduce.java:61) at org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:58) at org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:83) 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:83) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:338) at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:138) Caused by: org.apache.nutch.plugin.PluginRuntimeException: java.lang.ClassNotFoundException: org.apache.nutch.parse.htmlfilter.HtmlfilterIndexer at org.apache.nutch.plugin.Extension.getExtensionInstance(Extension.java:166) at org.apache.nutch.indexer.IndexingFilters.<init>(IndexingFilters.java:70) ... 8 more Caused by: java.lang.ClassNotFoundException: org.apache.nutch.parse.htmlfilter.HtmlfilterIndexer 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:319) at java.lang.ClassLoader.loadClass(ClassLoader.java:254) at org.apache.nutch.plugin.Extension.getExtensionInstance(Extension.java:156)
