Apache Hadoop
The Apache™ Hadoop® project develops open-source software for reliable, scalable, distributed computing.
The Apache Hadoop software library is a framework that allows for the distributed processing of large data sets across clusters of computers using simple programming models. It is designed to scale up from single servers to thousands of machines, each offering local computation and storage. Rather than rely on hardware to deliver high-availability, the library itself is designed to detect and handle failures at the application layer, so delivering a highly-available service on top of a cluster of computers, each of which may be prone to failures.
This is the first GA release in the 2.9 release line. It includes 30 New Features with 500+ subtasks, 407 Improvements, 790 Bug fixes new fixed issues since 2.8.2. For major features and improvements for Apache Hadoop 2.8.2 please refer: overview of major changes. For details of 790 bug fixes, improvements, and other enhancements since the previous 2.8.2 release, please check: release notes and changelog
Please note: Although this release has been tested on fairly large clusters, production users can wait for a subsequent point release which will contain fixes from further stabilization and downstream adoption.
This is the next release of Apache Hadoop 2.7 line.
Please see the Hadoop 2.7.5 Release Notes for the list of 34 bug fixes and optimizations since the previous release 2.7.4.
After four alpha releases and one beta release, 3.0.0 is generally available. 3.0.0 consists of 302 bug fixes, improvements, and other enhancements since 3.0.0-beta1. All together, 6242 issues were fixed as part of the 3.0.0 release series since 2.7.0.
Users are encouraged to read the overview of major changes in 3.0.0. The GA release notes and changelog detail the changes since 3.0.0-beta1.
This is the next release of Apache Hadoop 2.8 release line. It contains 79 bug fixes, improvments and other enhancements since 2.8.2.
For major features and improvements for Apache Hadoop 2.8, please refer: overview of major changes. For details of 79 fixes, improvements, and other enhancements since the previous 2.8.2 release, please check: release notes and changelog
This is the first GA release in the 2.8 release line. It contains 315 bug fixes, improvments and other enhancements since 2.8.1. For major features and improvements for Apache Hadoop 2.8, please refer: overview of major changes. For details of 315 fixes, improvements, and other enhancements since the previous 2.8.1 release, please check: release notes and changelog
The project includes these modules:
A wide variety of companies and organizations use Hadoop for both research and production. Users are encouraged to add themselves to the Hadoop PoweredBy wiki page.
Other Hadoop-related projects at Apache include: