All Packages

An abstract file system API.

Filesystem implementations that allow Hadoop to read directly from HTTP / HTTPS endpoints.

block caching for use in object store clients.

This package provides support for HDFS permission and ACL.

Support for the execution of a file system command.

This package contains support for statistic collection and reporting.

This package is for classes to be shared across object stores; for internal use within the hadoop-* modules only.

ViewFileSystem and ViewFileSystemOverloadScheme classes.

Support for embedded HTTP services.

Generic i/o code for use when reading and writing data to the network, to databases, and to files.

Implementation of compression/decompression for the BZip2 compression algorithm.

Implementation of compression/decompression for the Snappy compression algorithm.

Implementation of compression/decompression based on the zStandard compression algorithm.

Erasure codec framework.

Raw erasure coders.

A mechanism for selectively retrying methods that throw exceptions under certain circumstances.

This package provides Avro serialization in Hadoop.

Implementation/testing support for wrapped IO.

IPC internal classes not for any use by libraries outside the apache hadoop source tree.

This package provides access to JMX primarily through the JMXJsonServlet class.

Annotation interfaces for metrics instrumentation

A metrics system implementation

Builtin metrics sinks

Network-related classes.

Provides the server-side framework for authentication.

Filters for HTTP service security.

ZooKeeper secret manager for TokenIdentifiers and DelegationKeys.

Support for services.

This package provides utilities to interact with Curator ZooKeeper.

Support for functional programming within the Hadoop APIs.