# Package org.apache.nutch.host

Host database to store metadata per host.

See: Description

- Class Summary
  Class | Description
  --- | ---
  HostDb | A caching wrapper for the host datastore.
  HostDbReader | Display entries from the hostDB.
  HostDbUpdateJob | Scans the web table and create host entries for each unique host.
  HostDbUpdateJob.Mapper | Maps each WebPage to a host key.
  HostDbUpdateReducer | Combines all WebPages with the same host key to create a Host object, with some statistics.
  HostInjectorJob | Creates or updates an existing host table from a text file. The files contain one host name per line, optionally followed by custom metadata separated by tabs with the metadata key is separated from the corresponding value by '='.
  HostInjectorJob.UrlMapper |

## Package org.apache.nutch.host Description

Host database to store metadata per host.

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