title: Release 1.1.0 available date: 2012-10-13
This is a beta release for version 1.1.
This release has approximately 135 enhancements and bug fixes compared to Hadoop-1.0.4, including:
- Many performance improvements in HDFS, backported from trunk
- Improvements in Security to use SPNEGO instead of Kerberized SSL for HTTP transactions
- Lower default minimum heartbeat for task trackers from 3 sec to 300msec to increase job throughput on small clusters
- Port of Gridmix v3
- Set MALLOC_ARENA_MAX in hadoop-config.sh to resolve problems with glibc in RHEL-6
- Splittable bzip2 files
- Of course it also has the same security fix as release 1.0.4.
Please see the Hadoop 1.1.0 Release Notes for details.