Apache Hadoop Main 0.23.10 API

Common 
Package Description
org.apache.hadoop  
org.apache.hadoop.classification  
org.apache.hadoop.conf
Configuration of system parameters.
org.apache.hadoop.contrib.utils.join  
org.apache.hadoop.examples
Hadoop example code.
org.apache.hadoop.examples.dancing
This package is a distributed implementation of Knuth's dancing links algorithm that can run under Hadoop.
org.apache.hadoop.examples.pi
This package consists of a map/reduce application, distbbp, which computes exact binary digits of the mathematical constant π.
org.apache.hadoop.examples.pi.math
This package provides useful mathematical library classes for the distbbp program.
org.apache.hadoop.examples.terasort
This package consists of 3 map/reduce applications for Hadoop to compete in the annual terabyte sort competition.
org.apache.hadoop.filecache  
org.apache.hadoop.fs
An abstract file system API.
org.apache.hadoop.fs.ftp  
org.apache.hadoop.fs.http.client  
org.apache.hadoop.fs.http.server  
org.apache.hadoop.fs.kfs
A client for the Kosmos filesystem (KFS)
org.apache.hadoop.fs.permission  
org.apache.hadoop.fs.s3
A distributed, block-based implementation of FileSystem that uses Amazon S3 as a backing store.
org.apache.hadoop.fs.s3native
A distributed implementation of FileSystem for reading and writing files on Amazon S3.
org.apache.hadoop.fs.viewfs  
org.apache.hadoop.http.lib
This package provides user-selectable (via configuration) classes that add functionality to the web UI.
org.apache.hadoop.io
Generic i/o code for use when reading and writing data to the network, to databases, and to files.
org.apache.hadoop.io.compress  
org.apache.hadoop.io.file.tfile  
org.apache.hadoop.io.serializer
This package provides a mechanism for using different serialization frameworks in Hadoop.
org.apache.hadoop.io.serializer.avro
This package provides Avro serialization in Hadoop.
org.apache.hadoop.jmx
This package provides access to JMX primarily through the JMXJsonServlet class.
org.apache.hadoop.lib.lang  
org.apache.hadoop.lib.server  
org.apache.hadoop.lib.service  
org.apache.hadoop.lib.service.hadoop  
org.apache.hadoop.lib.service.instrumentation  
org.apache.hadoop.lib.service.scheduler  
org.apache.hadoop.lib.service.security  
org.apache.hadoop.lib.servlet  
org.apache.hadoop.lib.util  
org.apache.hadoop.lib.wsrs  
org.apache.hadoop.log  
org.apache.hadoop.log.metrics  
org.apache.hadoop.metrics
This package defines an API for reporting performance metric information.
org.apache.hadoop.metrics.file
Implementation of the metrics package that writes the metrics to a file.
org.apache.hadoop.metrics.ganglia
Implementation of the metrics package that sends metric data to Ganglia.
org.apache.hadoop.metrics.spi
The Service Provider Interface for the Metrics API.
org.apache.hadoop.metrics2
Metrics 2.0
org.apache.hadoop.metrics2.annotation
Annotation interfaces for metrics instrumentation
org.apache.hadoop.metrics2.filter
Builtin metrics filters (to be used in metrics config files)
org.apache.hadoop.metrics2.lib
A collection of library classes for implementing metrics sources
org.apache.hadoop.metrics2.sink
Builtin metrics sinks
org.apache.hadoop.metrics2.sink.ganglia  
org.apache.hadoop.metrics2.source  
org.apache.hadoop.metrics2.util
General helpers for implementing source and sinks
org.apache.hadoop.net
Network-related classes.
org.apache.hadoop.record
(DEPRECATED) Hadoop record I/O contains classes and a record description language translator for simplifying serialization and deserialization of records in a language-neutral manner.
org.apache.hadoop.record.compiler
(DEPRECATED) This package contains classes needed for code generation from the hadoop record compiler.
org.apache.hadoop.record.compiler.ant  
org.apache.hadoop.record.compiler.generated
(DEPRECATED) This package contains code generated by JavaCC from the Hadoop record syntax file rcc.jj.
org.apache.hadoop.record.meta  
org.apache.hadoop.security  
org.apache.hadoop.security.authentication.client  
org.apache.hadoop.security.authentication.examples  
org.apache.hadoop.security.authentication.server  
org.apache.hadoop.security.authentication.util  
org.apache.hadoop.streaming
Hadoop Streaming is a utility which allows users to create and run Map-Reduce jobs with any executables (e.g.
org.apache.hadoop.streaming.io  
org.apache.hadoop.tools.mapred  
org.apache.hadoop.tools.mapred.lib  
org.apache.hadoop.tools.rumen
Rumen is a data extraction and analysis tool built for Apache Hadoop.
org.apache.hadoop.tools.rumen.anonymization  
org.apache.hadoop.tools.rumen.datatypes  
org.apache.hadoop.tools.rumen.datatypes.util  
org.apache.hadoop.tools.rumen.serializers  
org.apache.hadoop.tools.rumen.state  
org.apache.hadoop.tools.util  
org.apache.hadoop.typedbytes
Typed bytes are sequences of bytes in which the first byte is a type code.
org.apache.hadoop.util
Common utilities.
org.apache.hadoop.util.bloom  
org.apache.hadoop.util.hash  
MapReduce 
Package Description
org.apache.hadoop.mapred  
org.apache.hadoop.mapred.gridmix  
org.apache.hadoop.mapred.gridmix.emulators.resourceusage  
org.apache.hadoop.mapred.jobcontrol  
org.apache.hadoop.mapred.join  
org.apache.hadoop.mapred.lib  
org.apache.hadoop.mapred.lib.aggregate  
org.apache.hadoop.mapred.lib.db  
org.apache.hadoop.mapred.pipes  
org.apache.hadoop.mapred.tools
Command-line tools associated with the org.apache.hadoop.mapred package.
org.apache.hadoop.mapreduce  
org.apache.hadoop.mapreduce.lib.aggregate  
org.apache.hadoop.mapreduce.lib.chain  
org.apache.hadoop.mapreduce.lib.db  
org.apache.hadoop.mapreduce.lib.fieldsel  
org.apache.hadoop.mapreduce.lib.input  
org.apache.hadoop.mapreduce.lib.jobcontrol  
org.apache.hadoop.mapreduce.lib.join  
org.apache.hadoop.mapreduce.lib.map  
org.apache.hadoop.mapreduce.lib.output  
org.apache.hadoop.mapreduce.lib.partition  
org.apache.hadoop.mapreduce.lib.reduce  
org.apache.hadoop.mapreduce.security  
org.apache.hadoop.mapreduce.server.jobtracker  
org.apache.hadoop.mapreduce.server.tasktracker  
org.apache.hadoop.mapreduce.tools  
org.apache.hadoop.mapreduce.v2  
org.apache.hadoop.mapreduce.v2.app.webapp.dao  
org.apache.hadoop.mapreduce.v2.hs.webapp.dao  
org.apache.hadoop.mapreduce.v2.security  
YARN 
Package Description
org.apache.hadoop.yarn  
org.apache.hadoop.yarn.api  
org.apache.hadoop.yarn.api.protocolrecords  
org.apache.hadoop.yarn.api.records  
org.apache.hadoop.yarn.applications.distributedshell  
org.apache.hadoop.yarn.client  
org.apache.hadoop.yarn.client.cli  
org.apache.hadoop.yarn.logaggregation  
Other Packages 
Package Description
org.hadoop.yarn.client  

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