# Hierarchy For Package org.apache.nutch.fetcher

Package Hierarchies:

- All Packages

## Class Hierarchy

- java.lang.Object
  - org.apache.hadoop.conf.Configured (implements org.apache.hadoop.conf.Configurable)
    - org.apache.nutch.util.NutchTool
      - org.apache.nutch.fetcher.Fetcher (implements org.apache.hadoop.util.Tool)
  - org.apache.nutch.fetcher.FetcherThreadEvent (implements java.io.Serializable)
  - org.apache.nutch.fetcher.FetcherThreadPublisher
  - org.apache.nutch.fetcher.FetchItem
  - org.apache.nutch.fetcher.FetchItemQueue
  - org.apache.nutch.fetcher.FetchItemQueues
  - org.apache.hadoop.mapreduce.InputFormat<K,V>
    - org.apache.hadoop.mapreduce.lib.input.FileInputFormat<K,V>
      - org.apache.hadoop.mapreduce.lib.input.SequenceFileInputFormat<K,V>
        - org.apache.nutch.fetcher.Fetcher.InputFormat
  - org.apache.hadoop.mapreduce.Mapper<KEYIN,VALUEIN,KEYOUT,VALUEOUT>
    - org.apache.nutch.fetcher.Fetcher.FetcherRun
  - org.apache.hadoop.mapreduce.OutputFormat<K,V>
    - org.apache.hadoop.mapreduce.lib.output.FileOutputFormat<K,V>
      - org.apache.nutch.fetcher.FetcherOutputFormat
  - org.apache.hadoop.mapreduce.Reducer<KEYIN,VALUEIN,KEYOUT,VALUEOUT>
    - org.apache.nutch.fetcher.Fetcher.FetcherReducer
  - java.lang.Thread (implements java.lang.Runnable)
    - org.apache.nutch.fetcher.FetcherThread
    - org.apache.nutch.fetcher.QueueFeeder

## Enum Class Hierarchy

- java.lang.Object
  - java.lang.Enum<E> (implements java.lang.Comparable<T>, java.lang.constant.Constable, java.io.Serializable)
    - org.apache.nutch.fetcher.FetcherThreadEvent.PublishEventType