title: Release 2.7.0 available date: “2015-04-21”
Apache Hadoop 2.7.0 contains a number of significant enhancements. A few of them are noted below.
- IMPORTANT notes
- This release drops support for JDK6 runtime and works with JDK 7+ only.
- This release is not yet ready for production use. Critical issues are being ironed out via testing and downstream adoption. Production users should wait for a 2.7.1/2.7.2 release.
- Hadoop Common
- HADOOP-9629 - Support Windows Azure Storage - Blob as a file system in Hadoop.
- Hadoop HDFS
- HDFS-3107 - Support for file truncate
- HDFS-7584 - Support for quotas per storage type
- HDFS-3689 - Support for files with variable-length blocks
- Hadoop YARN
- YARN-3100 - Make YARN authorization pluggable
- YARN-1492 - Automatic shared, global caching of YARN localized resources (beta)
- Hadoop MapReduce
- MAPREDUCE-5583 - Ability to limit running Map/Reduce tasks of a job
- MAPREDUCE-4815 - Speed up FileOutputCommitter for very large jobs with many output files.
Please see the Hadoop 2.7.0 Release Notes for details.