As the Release Manager for hadoop-2.x, I’m very pleased to announce the next major milestone for the Apache Hadoop community, the release of hadoop-2.0.3-alpha!2.0 Enhancements in this Alpha Release
This release delivers significant major enhancements and stability over previous releases in hadoop-2.x series. Notably, it includes:
- QJM for HDFS HA for NameNode (HDFS-3077) and related stability fixes to HDFS HA
- Multi-resource scheduling (CPU and memory) for YARN (YARN-2, YARN-3 & friends)
- YARN ResourceManager Restart (YARN-230)
- Significant stability at scale for YARN (over 30,000 nodes and 14 million applications so far, at time of release – see more details from folks at Yahoo!