How to crawl Local filesystem, getting error in plugin load and activation -SEVERE org.apache.nutch.plugin.PluginRuntimeException: extension point: org.apache.nutch.net.URLFilter does not exist.

[Arun Kaundal <ar...@gmail.com>]

Nutch geeks

     I am Crawling my Local hard-disk files. I have made necessary changes
in crawl-urlfilter, and urls.txt. My nutch-site.xml file is currently empty.
I am loading default setting of nutch-default.xml file. But I need to do to
activate plugin so that I do not get following error log:


051202 172827 SEVERE org.apache.nutch.plugin.PluginRuntimeException:
extension point: org.apache.nutch.net.URLFilter does not exist.
java.lang.ExceptionInInitializerError
        at org.apache.nutch.db.WebDBInjector.addPage(WebDBInjector.java:437)
        at org.apache.nutch.db.WebDBInjector.injectURLFile(
WebDBInjector.java:378)
        at org.apache.nutch.db.WebDBInjector.main(WebDBInjector.java:535)
        at org.apache.nutch.tools.CrawlTool.main(CrawlTool.java:137)
        at com.voltix.atlantis.taskscheduler.FetchListGenTask.execute(
FetchListGenTask.java:90)
        at org.quartz.core.JobRunShell.run(JobRunShell.java:195)
        at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(
SimpleThreadPool.java:520)
Caused by: java.lang.RuntimeException:
org.apache.nutch.plugin.PluginRuntimeException: extension point:
org.apache.nutch.net.URLFilter does not exist.
        at org.apache.nutch.plugin.PluginRepository.getInstance(
PluginRepository.java:147)
        at org.apache.nutch.net.URLFilters.<clinit>(URLFilters.java:40)
        ... 7 more
Caused by: org.apache.nutch.plugin.PluginRuntimeException: extension point:
org.apache.nutch.net.URLFilter does not exist.
        at org.apache.nutch.plugin.PluginRepository.installExtensions(
PluginRepository.java:78)
        at org.apache.nutch.plugin.PluginRepository.<init>(
PluginRepository.java:61)
        at org.apache.nutch.plugin.PluginRepository.getInstance(
PluginRepository.java:144)
        ... 8 more