# Uses of Class
org.apache.nutch.crawl.NutchWritable

Packages that use NutchWritable
Package
Description
org.apache.nutch.crawl
Crawl control code and tools to run the crawler.
org.apache.nutch.fetcher
The Nutch multi-threaded fetching module
org.apache.nutch.hostdb
org.apache.nutch.indexer
Index content, configure and run indexing and cleaning jobs to add, update, and delete documents from an index.
org.apache.nutch.metadata
A Multi-valued Metadata container, and set of constant fields for Nutch Metadata.
org.apache.nutch.parse
The `Parse` interface and related classes.
org.apache.nutch.scoring.webgraph
Scoring implementation based on link analysis (`LinkRank`), see `WebGraph`.
org.apache.nutch.segment
A segment stores all data from on generate/fetch/update cycle: fetch list, protocol status, raw content, parsed content, and extracted outgoing links.
org.apache.nutch.tools.warc
Tools to import / export between Nutch segments and WARC archives.

- ## Uses of NutchWritable in org.apache.nutch.crawl

  Method parameters in org.apache.nutch.crawl with type arguments of type NutchWritable
  Modifier and Type
  Method
  Description
  `void`
  CrawlDbReader.CrawlDbStatReducer.`reduce(Text key, Iterable<NutchWritable> values, Reducer<Text,NutchWritable,Text,NutchWritable>.Context context)`

- ## Uses of NutchWritable in org.apache.nutch.fetcher

  Methods in org.apache.nutch.fetcher that return types with arguments of type NutchWritable
  Modifier and Type
  Method
  Description
  `RecordWriter<Text,NutchWritable>`
  FetcherOutputFormat.`getRecordWriter(TaskAttemptContext context)`
  Method parameters in org.apache.nutch.fetcher with type arguments of type NutchWritable
  Modifier and Type
  Method
  Description
  `void`
  Fetcher.FetcherReducer.`reduce(Text key, Iterable<NutchWritable> values, Reducer<Text,NutchWritable,Text,NutchWritable>.Context context)`

- ## Uses of NutchWritable in org.apache.nutch.hostdb

  Method parameters in org.apache.nutch.hostdb with type arguments of type NutchWritable
  Modifier and Type
  Method
  Description
  `void`
  UpdateHostDbReducer.`reduce(Text key, Iterable<NutchWritable> values, Reducer<Text,NutchWritable,Text,HostDatum>.Context context)`

- ## Uses of NutchWritable in org.apache.nutch.indexer

  Method parameters in org.apache.nutch.indexer with type arguments of type NutchWritable
  Modifier and Type
  Method
  Description
  `void`
  IndexerMapReduce.IndexerReducer.`reduce(Text key, Iterable<NutchWritable> values, Reducer<Text,NutchWritable,Text,NutchIndexAction>.Context context)`

- ## Uses of NutchWritable in org.apache.nutch.metadata

  Subclasses of NutchWritable in org.apache.nutch.metadata
  Modifier and Type
  Class
  Description
  `class`
  `MetaWrapper`
  This is a simple decorator that adds metadata to any Writable-s that can be serialized by `NutchWritable`.

- ## Uses of NutchWritable in org.apache.nutch.parse

  Methods in org.apache.nutch.parse with parameters of type NutchWritable
  Modifier and Type
  Method
  Description
  `int`
  ParseSegment.ParseSegmentPartitioner.`getPartition(Text key, NutchWritable value, int numPartitions)`
  Method parameters in org.apache.nutch.parse with type arguments of type NutchWritable
  Modifier and Type
  Method
  Description
  `void`
  ParseSegment.ParseSegmentReducer.`reduce(Text key, Iterable<NutchWritable> values, Reducer<Text,NutchWritable,Text,ParseImpl>.Context context)`

- ## Uses of NutchWritable in org.apache.nutch.scoring.webgraph

  Method parameters in org.apache.nutch.scoring.webgraph with type arguments of type NutchWritable
  Modifier and Type
  Method
  Description
  `void`
  WebGraph.OutlinkDb.OutlinkDbReducer.`reduce(Text key, Iterable<NutchWritable> values, Reducer<Text,NutchWritable,Text,LinkDatum>.Context context)`

- ## Uses of NutchWritable in org.apache.nutch.segment

  Method parameters in org.apache.nutch.segment with type arguments of type NutchWritable
  Modifier and Type
  Method
  Description
  `void`
  SegmentReader.InputCompatReducer.`reduce(Text key, Iterable<NutchWritable> values, Reducer<Text,NutchWritable,Text,Text>.Context context)`

- ## Uses of NutchWritable in org.apache.nutch.tools.warc

  Method parameters in org.apache.nutch.tools.warc with type arguments of type NutchWritable
  Modifier and Type
  Method
  Description
  `void`
  WARCExporter.WARCMapReduce.WARCReducer.`reduce(Text key, Iterable<NutchWritable> values, Reducer<Text,NutchWritable,NullWritable,com.martinkl.warc.WARCWritable>.Context context)`