| Package | Description | 
|---|---|
| org.apache.hadoop.conf | Configuration of system parameters. | 
| org.apache.hadoop.crypto.key | Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements. | 
| org.apache.hadoop.filecache | |
| org.apache.hadoop.fs | Implementations of  AbstractFileSystemfor hdfs
    over rpc and hdfs over web. | 
| 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 | 
A distributed implementation of  FileSystemfor reading and writing files on
Azure Block Storage. | 
| 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.azurebfs.commit | Support for manifest committer. | 
| org.apache.hadoop.fs.ftp | |
| org.apache.hadoop.fs.impl | This package contains implementation classes for use inside
 filesystems. | 
| org.apache.hadoop.fs.obs | Package for supporting
 HuaweiCloud
 Object Storage Service (OBS) as a backend filesystem in Hadoop. | 
| org.apache.hadoop.fs.permission | This package provides support for HDFS permission and ACL. | 
| org.apache.hadoop.fs.s3a | S3A Filesystem. | 
| org.apache.hadoop.fs.s3a.auth | Authentication and permissions support. | 
| org.apache.hadoop.fs.s3native | 
A distributed implementation of  FileSystemfor reading and writing files on
Amazon S3. | 
| org.apache.hadoop.fs.viewfs | ViewFileSystem and ViewFileSystemOverloadScheme classes. | 
| org.apache.hadoop.ha | |
| org.apache.hadoop.hdfs | A distributed implementation of  FileSystem. | 
| org.apache.hadoop.hdfs.client | This package provides the administrative APIs for HDFS. | 
| org.apache.hadoop.hdfs.server.aliasmap | |
| org.apache.hadoop.hdfs.server.common.blockaliasmap.impl | |
| org.apache.hadoop.hdfs.server.federation.store.driver | The state store uses modular data storage classes derived from
 StateStoreDriver to handle querying, updating and deleting data records. | 
| org.apache.hadoop.hdfs.server.federation.store.driver.impl | Implementations of state store data providers/drivers. | 
| org.apache.hadoop.hdfs.server.namenode | |
| org.apache.hadoop.hdfs.web.oauth2 | OAuth2-based WebHDFS authentication. | 
| 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.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 | Tools to help define network clients and servers. | 
| org.apache.hadoop.mapred | |
| org.apache.hadoop.mapred.join | |
| org.apache.hadoop.mapred.lib | |
| org.apache.hadoop.mapred.pipes | |
| 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.input | |
| org.apache.hadoop.mapreduce.lib.jobcontrol | |
| org.apache.hadoop.mapreduce.lib.join | |
| org.apache.hadoop.mapreduce.lib.output | |
| org.apache.hadoop.mapreduce.lib.output.committer.manifest | Intermediate manifest committer. | 
| org.apache.hadoop.mapreduce.lib.partition | |
| org.apache.hadoop.mapreduce.security | |
| org.apache.hadoop.mapreduce.tools | |
| org.apache.hadoop.mapreduce.v2.hs | |
| org.apache.hadoop.metrics2.sink | Builtin metrics 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.security | |
| org.apache.hadoop.security.alias | Provides the hadoop credential provider API. | 
| org.apache.hadoop.security.authorize | Support for service-level authorization. | 
| org.apache.hadoop.security.http | Filters for HTTP service security. | 
| org.apache.hadoop.security.token | Support for delegation tokens. | 
| org.apache.hadoop.service | Support for services. | 
| org.apache.hadoop.service.launcher | This package contains classes, interfaces and exceptions to launch
 YARN services from the command line. | 
| org.apache.hadoop.tools | Command-line tools for MapReduce. | 
| org.apache.hadoop.tools.dynamometer | The Dynamometer tool is used to stress test the HDFS NameNode by setting
 up a realistic environment consistent of fake DataNodes and a real NameNode
 with a real FS namesystem and near-real user workload (RPCs). | 
| org.apache.hadoop.util | Common utilities. | 
| org.apache.hadoop.util.functional | Support for functional programming within the Hadoop APIs. | 
| org.apache.hadoop.yarn.client | |
| org.apache.hadoop.yarn.client.api | |
| org.apache.hadoop.yarn.client.api.impl | |
| org.apache.hadoop.yarn.client.cli | |
| org.apache.hadoop.yarn.conf | Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements. | 
| org.apache.hadoop.yarn.event | Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements. | 
| org.apache.hadoop.yarn.logaggregation | Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements. | 
| org.apache.hadoop.yarn.logaggregation.filecontroller | Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements. | 
| org.apache.hadoop.yarn.security | Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements. | 
| org.apache.hadoop.yarn.security.admin | Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements. | 
| org.apache.hadoop.yarn.security.client | Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements. | 
| org.apache.hadoop.yarn.service.client | Package org.apache.hadoop.yarn.service.client contains classes
 for YARN Services Client API. | 
| org.apache.hadoop.yarn.sharedcache | |
| org.apache.hadoop.yarn.util | Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements. | 
| org.apache.hadoop.yarn.util.timeline | Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configuration Provides access to configuration parameters. | 
| Configured Base class for things that may be configured with a  Configuration. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configuration Provides access to configuration parameters. | 
| Configured Base class for things that may be configured with a  Configuration. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configuration Provides access to configuration parameters. | 
| Configured Base class for things that may be configured with a  Configuration. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configured Base class for things that may be configured with a  Configuration. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configuration Provides access to configuration parameters. | 
| Configured Base class for things that may be configured with a  Configuration. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configuration Provides access to configuration parameters. | 
| Configured Base class for things that may be configured with a  Configuration. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configuration Provides access to configuration parameters. | 
| Configured Base class for things that may be configured with a  Configuration. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configured Base class for things that may be configured with a  Configuration. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configured Base class for things that may be configured with a  Configuration. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configuration Provides access to configuration parameters. | 
| Configured Base class for things that may be configured with a  Configuration. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configuration Provides access to configuration parameters. | 
| Configured Base class for things that may be configured with a  Configuration. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configuration Provides access to configuration parameters. | 
| Configured Base class for things that may be configured with a  Configuration. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configuration Provides access to configuration parameters. | 
| Configured Base class for things that may be configured with a  Configuration. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configuration Provides access to configuration parameters. | 
| Configured Base class for things that may be configured with a  Configuration. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configuration Provides access to configuration parameters. | 
| Configured Base class for things that may be configured with a  Configuration. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configuration Provides access to configuration parameters. | 
| Configured Base class for things that may be configured with a  Configuration. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configured Base class for things that may be configured with a  Configuration. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
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| Configuration Provides access to configuration parameters. | 
| Class and Description | 
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| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configuration Provides access to configuration parameters. | 
| Configured Base class for things that may be configured with a  Configuration. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
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| Configuration Provides access to configuration parameters. | 
| Class and Description | 
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| Configuration Provides access to configuration parameters. | 
| Class and Description | 
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| Configuration Provides access to configuration parameters. | 
| Class and Description | 
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| Configuration Provides access to configuration parameters. | 
| Class and Description | 
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| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configuration Provides access to configuration parameters. | 
| Configured Base class for things that may be configured with a  Configuration. | 
| Class and Description | 
|---|
| Configuration Provides access to configuration parameters. | 
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