3.0.x release versions

Component	3.0.0-RC1-debian12/ -ubuntu24/ -rocky9 2025/09/08
Apache Hadoop ^installed	3.4.1
Apache Hive ^installed	4.1.0
Apache Spark ^installed	4.0.0
Apache Tez ^installed	0.10.5
Cloud Storage Connector ^installed	3.1.4
Conscrypt ^installed	2.6
Java ^installed	17
Python ^installed	micromamba 2.0.5 with Python 3.11
Scala ^installed	2.13.14
Zookeeper ^{optional component}	3.9.3

Notes:

For support in case of issues or to provide feedback during the preview release, file bugs or feature requests .
The Zookeeper optional component is available in 3.0 images. You specify optional components that you want to install when you create a cluster (see Add optional components ).
yarn.nodemanager.recovery.enabled and HDFS Audit Logging are enabled by default in 3.0 images.
micromamba is installed as part of the Python installation.
The default resource calculator for YARN has been changed from DefaultResourceCalculator to DominantResourceCalculator , which uses the dominant-resource concept to determine resource allocation, such as Memory and CPU allocation. This change impacts Autoscaler , which scales based on the dominant resource usage of the cluster.