| org.apache.hadoop |  | 
| org.apache.hadoop.classification |  | 
| org.apache.hadoop.conf | Configuration of system parameters. | 
| org.apache.hadoop.contrib.bkjournal |  | 
| org.apache.hadoop.contrib.utils.join |  | 
| org.apache.hadoop.crypto |  | 
| org.apache.hadoop.crypto.key |  | 
| org.apache.hadoop.crypto.key.kms |  | 
| org.apache.hadoop.crypto.key.kms.server |  | 
| org.apache.hadoop.crypto.random |  | 
| 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 |  | 
| org.apache.hadoop.fs.adl | Supporting classes for metrics instrumentation. | 
| org.apache.hadoop.fs.adl.oauth2 | public interface to expose OAuth2 authentication related features. | 
| org.apache.hadoop.fs.azure |  | 
| org.apache.hadoop.fs.azure.metrics | 
Infrastructure for a Metrics2 source that provides information on Windows 
Azure Filesystem for Hadoop instances. | 
| org.apache.hadoop.fs.crypto |  | 
| org.apache.hadoop.fs.ftp |  | 
| org.apache.hadoop.fs.http.client |  | 
| org.apache.hadoop.fs.http.server |  | 
| org.apache.hadoop.fs.s3native |  | 
| org.apache.hadoop.fs.sftp | SFTP FileSystem package. | 
| org.apache.hadoop.fs.shell.find |  | 
| org.apache.hadoop.fs.swift.auth |  | 
| org.apache.hadoop.fs.swift.auth.entities |  | 
| org.apache.hadoop.fs.swift.exceptions |  | 
| org.apache.hadoop.fs.swift.http |  | 
| org.apache.hadoop.fs.swift.snative |  | 
| org.apache.hadoop.fs.swift.util |  | 
| org.apache.hadoop.fs.viewfs |  | 
| org.apache.hadoop.ha |  | 
| org.apache.hadoop.ha.proto |  | 
| org.apache.hadoop.ha.protocolPB |  | 
| 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.erasurecode |  | 
| org.apache.hadoop.io.erasurecode.codec |  | 
| org.apache.hadoop.io.erasurecode.coder |  | 
| org.apache.hadoop.io.erasurecode.coder.util |  | 
| org.apache.hadoop.io.erasurecode.grouper |  | 
| 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.ipc.proto |  | 
| org.apache.hadoop.ipc.protobuf |  | 
| org.apache.hadoop.ipc.protocolPB |  | 
| 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.maven.plugin.cmakebuilder |  | 
| org.apache.hadoop.maven.plugin.protoc |  | 
| org.apache.hadoop.maven.plugin.util |  | 
| org.apache.hadoop.maven.plugin.versioninfo |  | 
| org.apache.hadoop.metrics2 |  | 
| 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.minikdc |  | 
| org.apache.hadoop.mount |  | 
| org.apache.hadoop.net | Network-related classes. | 
| org.apache.hadoop.net.unix |  | 
| org.apache.hadoop.nfs |  | 
| org.apache.hadoop.nfs.nfs3 |  | 
| org.apache.hadoop.nfs.nfs3.request |  | 
| org.apache.hadoop.nfs.nfs3.response |  | 
| org.apache.hadoop.oncrpc |  | 
| org.apache.hadoop.oncrpc.security |  | 
| org.apache.hadoop.portmap |  | 
| 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.registry.cli |  | 
| org.apache.hadoop.registry.client.api | YARN Registry Client API. | 
| org.apache.hadoop.registry.client.binding | Registry binding utility classes. | 
| org.apache.hadoop.registry.client.exceptions | Registry Service Exceptions
 
 These are the Registry-specific exceptions that may be raised during
 Registry operations. | 
| org.apache.hadoop.registry.client.impl | Registry client services
 
 These are classes which follow the YARN lifecycle and which implement
 the  RegistryOperations
 API. | 
| org.apache.hadoop.registry.client.impl.zk | Core Zookeeper support. | 
| org.apache.hadoop.registry.client.types | This package contains all the data types which can be saved to the registry
 and/or marshalled to and from JSON. | 
| org.apache.hadoop.registry.client.types.yarn |  | 
| org.apache.hadoop.registry.server | Server-side classes for the registry
 
   These are components intended to be deployed only on servers or in test
   JVMs, rather than on client machines. | 
| org.apache.hadoop.registry.server.integration | This package contains the classes which integrate with the YARN resource
 manager. | 
| org.apache.hadoop.registry.server.services | Basic services for the YARN registry
 
   
     The RegistryAdminServiceextends the shared Yarn Registry client with registry setup and
     (potentially asynchronous) administrative actions. | 
| org.apache.hadoop.security |  | 
| org.apache.hadoop.security.alias |  | 
| 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.security.authorize |  | 
| org.apache.hadoop.security.http |  | 
| org.apache.hadoop.security.proto |  | 
| org.apache.hadoop.security.protocolPB |  | 
| org.apache.hadoop.security.ssl |  | 
| org.apache.hadoop.security.token |  | 
| org.apache.hadoop.security.token.delegation.web |  | 
| org.apache.hadoop.service |  | 
| 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.streaming.mapreduce |  | 
| org.apache.hadoop.tools | Command-line tools for MapReduce. | 
| org.apache.hadoop.tools.mapred |  | 
| org.apache.hadoop.tools.mapred.lib |  | 
| org.apache.hadoop.tools.proto |  | 
| org.apache.hadoop.tools.protocolPB |  | 
| 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.tracing |  | 
| 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.curator |  | 
| org.apache.hadoop.util.hash |  |