This topic describes the latest updates to E-MapReduce (EMR) documentation, including the new features and feature updates.

For more information about the version updates and major feature updates of EMR, see Overview.

Updates in January 2021

Date Update item Category Description Documentation
2021.01.15 SmartData New feature Describes the updates to SmartData V3.2.X. SmartData 3.2.X
2021.01.15 Product Introduction New feature Describes the release notes of EMR V3.33.X, including the release date and updates. Release notes for EMR V3.33.X
2021.01.15 Product Introduction New feature Describes the release notes of EMR V4.6.X, including the release date and updates. Release notes for EMR V4.6.X

Updates in December 2020

Date Update item Category Description Documentation
2020.12.02 Cluster types New feature Describes Alluxio. It is a cloud-oriented open source data orchestration technology for data analytics and AI. Alluxio
2020.12.02 Cluster types New feature Describes Hudi. It is a data lake framework that enables you to update and delete data in Hadoop compatible file systems. It also allows you to consume changed data in streaming mode. Hudi
2020.12.14 Cluster types New feature Describes EMR Remote Shuffle Service (ESS). It is an extension provided by EMR to optimize the shuffle operations of computing engines. Introduction
2020.12.14 New feature New feature Describes the release notes of EMR V4.5.0, including the release date and updates. Release notes of EMR V4.5.X

Updates in November 2020

Date Update item Category Description Documentation
2020.11.25 New feature New feature Describes the release notes of EMR V3.32.X, including the release date and updates. Release notes of EMR V3.32.X
2020.11.25 SmartData New feature Describes the updates to SmartData V3.1.X. SmartData 3.1.x
2020.11.25 SmartData New feature Describes the data management policies of JindoFS in block storage mode. Data management policies
2020.11.25 SmartData New feature Describes how to use JindoTable to collect the access frequency statistics of tables and partitions. Use JindoTable to collect access frequency statistics of tables and partitions
2020.11.25 SmartData Update Describes how to use a credential provider in SmartData V3.1.0. Use a credential provider

Updates in October 2020

Date Update item Category Description Documentation
2020.10.28 SmartData New feature Describes the updates to SmartData V3.0.0. SmartData 3.0.x

Updates in September 2020

Date Update item Category Description Documentation
2020.09.2 SmartData Update Describes how to use JindoFS SDK to access JindoFS in password-free mode from an Elastic Compute Service (ECS) instance. The instance is not an instance in EMR clusters. Use the password-free feature of JindoFS SDK
2020.09.2 SmartData Update Describes how to use Raft-RocksDB-Tablestore to store the metadata that is managed by Namespace Service of JindoFS. Use Raft-RocksDB-Tablestore to store metadata

Updates in August 2020

Date Update item Category Description Documentation
2020.08.1 Cluster types Update Describes how to integrate HDFS with Ranger and configure related permissions. HDFS

Updates in July 2020

Date Update item Category Description Documentation
2020.07.24 New feature New feature Describes how to configure an Impala SQL job. Configure an Impala SQL job
2020.07.13 Data development Optimization Describes how to configure a VVR-based Flink job. Configure a VVR-based Flink job
2020.07.09 Developer Guide Experience optimization Updates the default value of the spark.hadoop.fs.oss.impl parameter.
2020.07.02 OpenAPI New API operation Describes how to call an API operation to scale in an EMR cluster. Cluster scale-in

Updates in June 2020

Date Update item Category Description Documentation
2020.06.17 New feature New feature Describes how to configure and use Alink, Faiss-Server, and TensorFlow in the EMR console.