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 3.1.1/3.1.2 release.
The Hadoop community fixed 768 JIRAs (https://s.apache.org/apache-hadoop-3.1.0-all-tickets) in total as part of the 3.1.0 release. Of these fixes:
– 141 in Hadoop Common
– 266 in HDFS
– 329 in YARN
– 32 in MapReduce
Apache Hadoop 3.1.0 contains a number of significant features and enhancements.
YARN supporting GPUs and FPGAs is very interesting.