# Package org.apache.nutch.hostdb

package org.apache.nutch.hostdb

- Class
  Description
  CrawlDatumProcessor
  These are instantiated once for each host.
  FetchOverdueCrawlDatumProcessor
  Simple custom crawl datum processor that counts the number of records that are overdue for fetching, e.g.
  HostDatum
  ReadHostDb
  ResolverThread
  Simple runnable that performs DNS lookup for a single host.
  UpdateHostDb
  Tool to create a HostDB from the CrawlDB.
  UpdateHostDbMapper
  Mapper ingesting HostDB and CrawlDB entries.
  UpdateHostDbReducer