| 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.crypto.key.kms | |
| org.apache.hadoop.fs | An abstract file system API. | 
| org.apache.hadoop.fs.ftp | |
| org.apache.hadoop.fs.http | Filesystem implementations that allow Hadoop to read directly from
 HTTP / HTTPS endpoints. | 
| org.apache.hadoop.fs.permission | |
| org.apache.hadoop.fs.sftp | SFTP FileSystem package. | 
| org.apache.hadoop.fs.shell | |
| org.apache.hadoop.fs.shell.find | |
| org.apache.hadoop.fs.viewfs | |
| org.apache.hadoop.ha | |
| org.apache.hadoop.ha.protocolPB | |
| org.apache.hadoop.http | |
| 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.compress.bzip2 | |
| org.apache.hadoop.io.compress.lz4 | |
| org.apache.hadoop.io.compress.snappy | |
| org.apache.hadoop.io.compress.zlib | |
| org.apache.hadoop.io.compress.zstd | |
| org.apache.hadoop.io.file.tfile | |
| org.apache.hadoop.io.retry | A mechanism for selectively retrying methods that throw exceptions under
 certain circumstances. | 
| 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.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 | |
| org.apache.hadoop.security.authorize | |
| org.apache.hadoop.security.http | |
| org.apache.hadoop.security.token | |
| org.apache.hadoop.service | |
| org.apache.hadoop.service.launcher | This package contains classes, interfaces and exceptions to launch
 YARN services from the command line. | 
| org.apache.hadoop.tools | |
| org.apache.hadoop.util | Common utilities. | 
| Class and Description | 
|---|
| Configurable Something that may be configured with a  Configuration. | 
| Configuration Provides access to configuration parameters. | 
| Configuration.DeprecationDelta A pending addition to the global set of deprecated keys. | 
| Configuration.IntegerRanges A class that represents a set of positive integer ranges. | 
| Configured Base class for things that may be configured with a  Configuration. | 
| Reconfigurable Something whose  Configurationcan be changed at run time. | 
| ReconfigurationException Exception indicating that configuration property cannot be changed
 at run time. | 
| ReconfigurationTaskStatus | 
| ReconfigurationUtil | 
| ReconfigurationUtil.PropertyChange | 
| 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 | 
|---|
| 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 | 
|---|
| 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 | 
|---|
| 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. | 
| Configuration.IntegerRanges A class that represents a set of positive integer ranges. | 
| 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 | 
|---|
| 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. | 
| 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 | 
|---|
| 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 | 
|---|
| 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. | 
| 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. | 
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