Overview (Apache Hadoop Common 3.5.0 API)
Description: package index

# Apache Hadoop Common 3.5.0 API

Apache Hadoop Common API
Package
Description
org.apache.hadoop
org.apache.hadoop.conf
Configuration of system parameters.
org.apache.hadoop.crypto
Crypto related classes.
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.crypto.random
org.apache.hadoop.fs
An abstract file system API.
org.apache.hadoop.fs.audit
Public classes for adding information to any auditing information picked up by filesystem clients.
org.apache.hadoop.fs.crypto
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.impl
This package contains implementation classes for use inside filesystems.
org.apache.hadoop.fs.impl.prefetch
block caching for use in object store clients.
org.apache.hadoop.fs.local
Filesystem implementations that allow Hadoop to read directly from the local file system.
org.apache.hadoop.fs.permission
This package provides support for HDFS permission and ACL.
org.apache.hadoop.fs.protocolPB
Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements.
org.apache.hadoop.fs.sftp
SFTP FileSystem package.
org.apache.hadoop.fs.shell
Support for the execution of a file system command.
org.apache.hadoop.fs.shell.find
org.apache.hadoop.fs.statistics
This package contains support for statistic collection and reporting.
org.apache.hadoop.fs.statistics.impl
Implementation support for statistics.
org.apache.hadoop.fs.store
This package is for classes to be shared across object stores; for internal use within the hadoop-* modules only.
org.apache.hadoop.fs.store.audit
Auditing classes for internal use within the hadoop-* modules only.
org.apache.hadoop.fs.viewfs
ViewFileSystem and ViewFileSystemOverloadScheme classes.
org.apache.hadoop.ha
org.apache.hadoop.ha.protocolPB
org.apache.hadoop.http
Support for embedded HTTP services.
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
Implementation of compression/decompression for the BZip2 compression algorithm.
org.apache.hadoop.io.compress.lz4
Implementation of compression/decompression for the LZ4 compression algorithm.
org.apache.hadoop.io.compress.snappy
Implementation of compression/decompression for the Snappy compression algorithm.
org.apache.hadoop.io.compress.zlib
Implementation of compression/decompression based on the popular gzip compressed file format.
org.apache.hadoop.io.compress.zstd
Implementation of compression/decompression based on the zStandard compression algorithm.
org.apache.hadoop.io.erasurecode
org.apache.hadoop.io.erasurecode.codec
Erasure codec framework.
org.apache.hadoop.io.erasurecode.coder
Erasure coders framework.
org.apache.hadoop.io.erasurecode.coder.util
org.apache.hadoop.io.erasurecode.grouper
org.apache.hadoop.io.erasurecode.rawcoder
Raw erasure coders.
org.apache.hadoop.io.erasurecode.rawcoder.util
General helpers for implementing raw erasure coders.
org.apache.hadoop.io.file.tfile
org.apache.hadoop.io.nativeio
Various native IO-related calls not available in Java.
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.io.wrappedio
Support for dynamic access to filesystem operations which are not available in older hadoop releases.
org.apache.hadoop.io.wrappedio.impl
Implementation/testing support for wrapped IO.
org.apache.hadoop.ipc
Tools to help define network clients and servers.
org.apache.hadoop.ipc.internal
IPC internal classes not for any use by libraries outside the apache hadoop source tree.
org.apache.hadoop.ipc.metrics
RPC related metrics.
org.apache.hadoop.ipc.protocolPB
org.apache.hadoop.jmx
This package provides access to JMX primarily through the `JMXJsonServlet` class.
org.apache.hadoop.log
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.impl
A metrics system implementation
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.net.unix
org.apache.hadoop.oncrpc
This package provides ONC RPC implementation with simple UDP/TCP Servers and clients.
org.apache.hadoop.oncrpc.security
This package provides security related implementation for ONC RPC.
org.apache.hadoop.portmap
This package provides a port mapper implementation used by ONC RPC.
org.apache.hadoop.security
Classes for hadoop security.
org.apache.hadoop.security.alias
Provides the hadoop credential provider API.
org.apache.hadoop.security.authentication.server
Provides the server-side framework for authentication.
org.apache.hadoop.security.authorize
Support for service-level authorization.
org.apache.hadoop.security.http
Filters for HTTP service security.
org.apache.hadoop.security.protocolPB
org.apache.hadoop.security.ssl
org.apache.hadoop.security.token
Support for delegation tokens.
org.apache.hadoop.security.token.delegation
ZooKeeper secret manager for TokenIdentifiers and DelegationKeys.
org.apache.hadoop.security.token.delegation.web
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
org.apache.hadoop.tools.protocolPB
org.apache.hadoop.util
Common utilities.
org.apache.hadoop.util.bloom
org.apache.hadoop.util.concurrent
Support for concurrent execution.
org.apache.hadoop.util.curator
This package provides utilities to interact with Curator ZooKeeper.
org.apache.hadoop.util.dynamic
Dynamic class loading and instantiation.
org.apache.hadoop.util.functional
Support for functional programming within the Hadoop APIs.
org.apache.hadoop.util.hash