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E-MapReduce:Release notes of EMR V3.25.X

Last Updated:Apr 27, 2023

This topic describes the release notes of E-MapReduce (EMR) V3.25.X, including the release date, new feature, and updates.

Release date

January 13, 2020 for EMR V3.25.0

New feature

Operations related to Ranger Presto are supported.

Updates

Component	Description
Ranger	The database of Ranger Admin is initialized in a high-availability cluster. The security issues that are caused when you run scripts on Ranger UserSync are fixed.
Spark	Parameters related to Delta, such as `spark.sql.extensions`, can be configured in the EMR console. Data from a Delta table can be read by using Hive to avoid manual configuration of InputFormat. The ALTER TABLE SET TBLPROPERTIES and UNSET TBLPROPERTIES statements are supported.
Delta
Hive	The issue that causes execution failures of MapReduce tasks in automatic local mode is fixed.
Presto	Presto is updated to 310. Joda-Time is updated to 2.10.5.
Tez	Tez is updated to 0.9.2. The issue that the application running progress cannot be properly displayed on the web UI of Tez is fixed. The issue that you cannot view the application running history on the web UI of Tez is fixed.
Impala	The issue that an LZO table cannot be accessed by using Impala is fixed.
HDFS	JAR packages related to Mongo-Hadoop are removed.
ZooKeeper	ZooKeeper is updated to 3.5.6.
YARN	Information on the web UI of Tez can be viewed. You can set yarn.resourcemanager.system-metrics-publisher.enabled to true on the yarn-site tab.
Bigboot	Bigboot is updated to 2.2.3. The renaming operation is supported in OSS cache mode.
SmartData
Knox	Dependencies are updated.
Oozie	Dependencies are updated.