Releases Archive

    Release 2.5.2 available

    2014 Nov 19

    Apache Hadoop 2.5.2 is a point release in the 2.5.x release line, and fixes a few critical issues in 2.5.1

    Release 2.6.0 available

    2014 Nov 18

    Apache Hadoop 2.6.0 contains a number of significant enhancements such as:

    • Hadoop Common
    • HADOOP-10433 - Key management server (beta)
    • HADOOP-10607 - Credential provider (beta)
    • Hadoop HDFS
    • Heterogeneous Storage Tiers - Phase 2
    • HDFS-5682 - Application APIs for heterogeneous storage
    • HDFS-7228 - SSD storage tier
    • HDFS-5851 - Memory as a storage tier (beta)
    • HDFS-6584 - Support for Archival Storage
    • HDFS-6134 - Transparent data at rest encryption (beta)
    • HDFS-2856 - Operating secure DataNode without requiring root access
    • HDFS-6740 - Hot swap drive: support add/remove data node volumes without restarting data node (beta)
    • HDFS-6606 - AES support for faster wire encryption
    • Hadoop YARN
    • YARN-896 - Support for long running services in YARN
    • YARN-913 - Service Registry for applications
    • YARN-666 - Support for rolling upgrades
    • YARN-556 - Work-preserving restarts of ResourceManager
    • YARN-1336 - Container-preserving restart of NodeManager
    • YARN-796 - Support node labels during scheduling
    • YARN-1051 - Support for time-based resource reservations in Capacity Scheduler (beta)
    • YARN-1964 - Support running of applications natively in Docker containers (alpha)

    Please see the Hadoop 2.6.0 Release Notes for details.

    Release 2.5.1 available

    2014 Sep 12

    Apache Hadoop 2.5.1 is a point release in the 2.5.x release line, and fixes a few release issues with 2.5.0.

    Release 2.5.0 available

    2014 Aug 11

    Apache Hadoop 2.5.0 is a minor release in the 2.x release line.

    The release includes the following major features and improvements:

    • Authentication improvements when using an HTTP proxy server.
    • A new Hadoop Metrics sink that allows writing directly to Graphite.
    • Specification for Hadoop Compatible Filesystem effort.
    • Support for POSIX-style filesystem extended attributes.
    • OfflineImageViewer to browse an fsimage via the WebHDFS API.
    • Supportability improvements and bug fixes to the NFS gateway.
    • Modernized web UIs (HTML5 and Javascript) for HDFS daemons.
    • YARN’s REST APIs support submitting and killing applications.
    • Kerberos integration for the YARN’s timeline store.
    • FairScheduler allows creating user queues at runtime under any specified parent queue.

    Users are encouraged to try out 2.5.0

    Please see the Hadoop 2.5.0 Release Notes for details.

    Release 2.4.1 available

    2014 Jun 30

    Apache Hadoop 2.4.1 is a bug-fix release for the stable 2.4.x line.

    There is also a security bug fix in this minor release.

    • CVE-2014-0229: Add privilege checks to HDFS admin sub-commands refreshNamenodes, deleteBlockPool and shutdownDatanode.

    Users are encouraged to immediately move to 2.4.1.

    Please see the Hadoop 2.4.1 Release Notes for details.

    Release 0.23.11 available

    2014 Jun 27

    A point release for the 0.23.X line. Bug fixes to continue stabilization.

    Please see the Hadoop 0.23.11 Release Notes for details.

    Release 2.4.0 available

    2014 Apr 7

    Apache Hadoop 2.4.0 contains a number of significant enhancements such as:

    • Support for Access Control Lists in HDFS
    • Native support for Rolling Upgrades in HDFS
    • Usage of protocol-buffers for HDFS FSImage for smooth operational upgrades
    • Complete HTTPS support in HDFS
    • Support for Automatic Failover of the YARN ResourceManager
    • Enhanced support for new applications on YARN with Application History Server and Application Timeline Server
    • Support for strong SLAs in YARN CapacityScheduler via Preemption

    Please see the Hadoop 2.4.0 Release Notes for details.

    Release 2.3.0 available

    2014 Feb 20

    Apache Hadoop 2.3.0 contains a number of significant enhancements such as:

    • Support for Heterogeneous Storage hierarchy in HDFS.
    • In-memory cache for HDFS data with centralized administration and management.
    • Simplified distribution of MapReduce binaries via HDFS in YARN Distributed Cache.

    Please see the Hadoop 2.3.0 Release Notes for details.

    Release 0.23.10 available

    2013 Dec 11

    A point release for the 0.23.X line. Bug fixes to continue stabilization.

    Please see the Hadoop 0.23.10 Release Notes for details.

    Release 2.2.0 available

    2013 Oct 15

    Apache Hadoop 2.2.0 is the GA release of Apache Hadoop 2.x.

    Users are encouraged to immediately move to 2.2.0 since this release is significantly more stable and is guaranteed to remain compatible in terms of both APIs and protocols.

    To recap, this release has a number of significant highlights compared to Hadoop 1.x:

    • YARN - A general purpose resource management system for Hadoop to allow MapReduce and other other data processing frameworks and services
    • High Availability for HDFS
    • HDFS Federation
    • HDFS Snapshots
    • NFSv3 access to data in HDFS
    • Support for running Hadoop on Microsoft Windows
    • Binary Compatibility for MapReduce applications built on hadoop-1.x
    • Substantial amount of integration testing with rest of projects in the ecosystem

    A couple of important points to note while upgrading to hadoop-2.2.0:

    • HDFS - The HDFS community decided to push the symlinks feature out to a future 2.3.0 release and is currently disabled.
    • YARN/MapReduce - Users need to change ShuffleHandler service name from mapreduce.shuffle to mapreduce_shuffle.

    Please see the Hadoop 2.2.0 Release Notes for details.