This topic describes the release notes of E-MapReduce (EMR) V4.3.0, including the release date and updates.

Release date

May 20, 2020 for EMR V4.3.0

Updates

Component Description
Ranger
  • Custom deployment of Hadoop Distributed File System (HDFS), Hive, and Spark plug-ins is supported. You can enable plug-ins on required service nodes.
  • The RangerUserSync and RangerAdmin components can be configured in the EMR console.
Presto The Kudu client is updated.
Spark
  • Spark is updated to 2.4.5.
  • The associated Delta Lake is updated to 0.6.0.
  • The issue that PySpark cannot properly run after Ranger Hive is enabled is fixed.
HDFS
  • The issue that the HDFS_NAMENODE_OPTS parameter does not take effect is fixed.
  • Custom deployment is supported.
YARN Custom deployment is supported.
Hive Custom deployment is supported.
Knox Information on the web UI of HDFS NameNode in Hadoop 3.X can be viewed.
Zeppelin The issue that a zepping.keytab file fails to be generated is fixed.
Kafka Kafka is updated to 2.4.1.
Kudu Kudu is updated to 1.11.1.
Impala Issues related to HAProxy are fixed.
Livy Issues related to xmllint are fixed.
Hue
  • Hue can be deployed on gateway clusters.
  • Multiple Hue instances can be enabled on a single node.