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Release Notes

Last updated: 2022-05-16 12:15:40

    April 2022

    Update Description Release Date Documentation
    Released a Hadoop cluster version—EMR v3.4.0.
  • Added support for Spark 3.2.1, Trino 372, Flink 1.14.3, HBase 2.4.5, ZooKeeper 3.6.3, Impala 4.0.0, Zeppelin 0.10.1, Alluxio 2.8.0, Hudi 0.10.1, Iceberg 0.13.1, and GooseFS 1.2.0.
  • Renamed PrestoSQL Trino in the new version and added support for Ranger. Monitoring metric alarms need to be configured according to Trino in the new version.
  • 2022-04-22 Component Version
    Trino Monitoring Metrics
    Added the event feature and event-related metrics.
  • Launched the new version of the interactive features of the event list.
  • Added event-related metrics such as node single-disk inode utilization, single-disk space utilization, single-disk IO utilization, all HBase HMasters standby, and all HDFS NameNodes standby.
  • 2022-04-22 Cluster Event
    Added diverse disk metrics for HDFS DataNodes.
  • Added a great variety of metrics such as block quantity, used disk capacity, free disk capacity, and reserved disk capacity.
  • 2022-04-22 HDFS Monitoring Metrics
    Added support for container-based EMR clusters. Added support for Spark deployment based on EKS in the Beijing, Shanghai, Guangzhou, and Nanjing regions. 2022-04-12 Overview

    March 2022

    Update Description Release Date Documentation
    Added the StarRocks cluster type. Added the StarRocks cluster type and integrated open-source StarRocks. 2022-03-11 StarRocks Development Guide
    Added support for adding nodes without assigning ApplicationMasters by default. Added support for adding nodes without assigning ApplicationMasters by default, ensuring that the running ApplicationMaster will not be terminated and the job can be performed normally. 2022-03-08 Automatically Adding Task Nodes Without Assigning ApplicationMasters
    Added load-based scaling metrics. Added load-based scaling metrics such as ContainerPending, AppPending, and AppRunning. 2022-03-08 Auto Scaling
    Added support for setting node labels for added host resources. Added support for setting YARN node labels for added host resources to increase the resource utilization efficiency. 2022-03-08 -

    January 2022

    Update Description Release Date Documentation
    Released a Doris cluster version—Doris v1.2.0. Released Doris 0.15. 2022-01-21 Component Version
    Added support for sharing component configurations. Added support for sharing the components of an existing cluster with other clusters without deploying such components again. This makes it easier to manage multiple clusters with the same component configurations. 2022-01-14 Component Configuration Sharing
    Added monitoring metrics. Added Kylin, Zeppelin, Oozie, Storm, Livy, and Kyuubi monitoring metrics.
    Added new CosRanger monitoring metrics.
    - Kylin Monitoring Metrics
    Zeppelin Monitoring Metrics
    Oozie Monitoring Metrics
    Storm Monitoring Metrics
    Livy Monitoring Metrics
    Kyuubi Monitoring Metrics
    COSRanger Monitoring Metrics
    Optimized log search. Added support for more components and global regions and optimized log search interactions. - Log Search

    December 2021

    Update Description Release Date Documentation
    Added four use cases for the Hadoop cluster type. Added the ZooKeeper, HBase, Presto, and Kudu use cases for the Hadoop cluster type to help you quickly create a cluster based on your business scenario. 2021-12-17 Node Type Description
    Launched a new purchase page. Optimized the existing cluster creation process to support the placement group node dimension for unified resource management. 2021-12-17 Creating EMR Cluster
    Added support for system disk selection. Added support for selecting the system disk type and size as needed. 2021-12-17 -
    Optimized the task center. Added support for viewing the details of all tasks of the current cluster inside the cluster, and optimized the interaction path of the task center for easier viewing and use. 2021-12-17 -
    Launched diversified component operation features. Added support for visually setting instruction-level operations of components such as HDFS and YARN. 2021-12-07 Service Operation
    Added monitoring metrics. Added Doris monitoring metrics.
    Adjusted the original HBase table load to HBase table-level monitoring.
    2021-12-07 Doris Monitoring Metrics
    HBase Table-Level Monitoring
    Upgraded the operating system. Upgraded the operating systems of all EMR versions of the Hadoop type to TencentOS Server to provide a more stable, secure, and high-performance cloud native runtime environment. If you encounter any security issues related to the operating system of an existing cluster, contact us for assistance. 2021-12-03 TencentOS Server Introduction

    September 2021

    Update Description Release Date Documentation
    Released a Hadoop cluster version—EMR v3.3.0. Added support for HBase v2.3.5, Phoenix v5.1.2, Kudu v1.15.0, Hue v4.10.0, Hudi v0.8.0, Tez v0.10.1, Livy v0.8.0, Ganglia v3.7.2, Kyuubi v1.1.0, and LDAP v2.4.44. 2021-09-28 Component Version
    Added monitoring metrics. Enriched Alluxio service monitoring metrics and added COSRanger monitoring metrics. 2021-09-15 Alluxio Monitoring Metrics
    COSRanger Monitoring Metrics
    Connected to Cloud Monitor's default alarms. Cloud Monitor supports default alarm policies for Elastic MapReduce metrics/events. 2021-09-15 -

    August 2021

    Update Description Release Date Documentation
    Added support for YARN resource scheduling. Added support for UI-based YARN resource scheduling configuration. 2021-08-31 YARN Resource Scheduling
    Added support for user management. Added support for visually managing Kerberos and Ranger users. 2021-08-31 Managing Users

    July 2021

    Update Description Release Date Documentation
    Released a Hadoop cluster version—EMR v2.6.0. Added support for Spark v3.0.2, Impala v3.4.0, GooseFS v1.0.0, OpenLDAP v2.4.44, Kyuubi v1.1.0, etc. 2021-07-15 Component Version

    June 2021

    Update Description Release Date Documentation
    Added support for YARN job query. Added detailed metric statistics for YARN jobs. 2021-06-24 YARN Job Query
    Added support for Impala query management. Added detailed metric statistics for Impala query jobs. 2021-06-24 Impala Query Management
    Added support for automatic scaling for the spot instance mode. Added support for automatically adding compute nodes of the spot instance mode. 2021-06-03 Auto Scaling
    Added support for graceful scale-in. When a scale-in action is triggered, nodes that are executing tasks will not be released immediately. Instead, they will be released after completing the tasks. 2021-06-03 Graceful Scale-In
    Added support for integrating Knox with Tez. Added support for viewing Tez tasks via UI. 2021-06-03 Integrating Knox with Tez
    Added availability zones. Added support for Singapore Zone 3 and Tokyo Zone 2. 2021-06-03 -
    Added regions. Added support for regions such as Moscow, Frankfurt, Virginia, Bangkok, Mumbai, Tokyo, Toronto, and Seoul. 2021-06-03 -

    May 2021

    Update Description Release Date Documentation
    Released a Kafka cluster version—Kafka v1.0.0. Added support for Kafka v1.1.1, KafkaManager v2.0.0.2, Knox v1.2.0, and ZooKeeper v3.6.1. 2021-05-13 Kafka Development Guide
    Released a Doris cluster version—Doris v1.0.0. Added support for Doris v0.13.0 and Knox v1.2.0. 2021-05-13 Doris Development Guide

    April 2021

    Update Description Release Date Documentation
    Released a Hadoop cluster version—EMR v3.2.0. Added support for Hadoop v3.2.2, Spark v3.0.2, Presto v350, Flink v1.12.1, Alluxio v2.5.0, Ranger v2.1.0, Iceberg v0.11.0, and Hudi v0.7.0. 2021-04-30 Component Version
    Added the **Start/Stop Services** feature. Added support for starting or stopping all services on a node. 2021-04-27 Starting/Stopping Services
    Released a Hadoop cluster version—EMR v2.5.1. Added support for Alluxio v2.5.0 and Hudi v0.5.1. Alluxio supports COS Transparent-URI. 2021-04-10 Support for COS Transparent-URI

    February 2021

    Update Description Release Date Documentation
    Released the EMR service in new regions on Tencent Cloud Chinese. Added support for the Bangkok, Seoul, Tokyo, Virginia, and Toronto regions on Tencent Cloud Chinese. 2021-02-02 -

    January 2021

    Update Description Release Date Documentation
    Added the cluster script feature. Added support for running a specified script on multiple nodes at a time for higher efficiency. 2021-01-26 Cluster Scripts
    Added support for cross-model configuration change. You can select other models to change the node configuration when the current model is sold out. 2021-01-26 Adjusting Configuration
    Added the auto scaling feature. The auto scaling feature automatically adds or removes task nodes, helping you save costs while meeting the requirement for cluster computing power. 2021-01-26 Auto Scaling
    Added monitoring metrics.
    1. Added new monitoring metrics for the HDFS, YARN, HBase, Hive, and Druid services.
    2. Added support for monitoring on the Kudu and Alluxio services.
    2021-01-13 Node Monitoring Metrics
    Released the EMR service in Singapore on the international version. Added support for Singapore Zone 1 and Singapore Zone 2 on the international version. 2021-01-13 -

    December 2020

    Update Description Release Date Documentation
    Released a Hadoop cluster version—EMR v3.1.0. Added support for Impala v3.4.0, Flink v1.10.0, HBase v2.3.3, Phoenix v5.0.0, Alluxio v2.3.0, Kudu v1.13.0, and ZooKeeper v3.6.1. 2020-12-14 Component Version

    November 2020

    Update Description Release Date Documentation
    Released the EMR TianQiong edition. Added support for Spark materialized views. 2020-11-27 Component Version
    EMR TianQiong Introduction
    Optimized monitoring and alarming.
  • Added support for setting alarms for disk monitoring metrics in Cloud Monitor (CM).
  • Added support for customizing EMR monitoring dashboard in CM dashboard.
  • Added support for subscribing to EMR event monitoring alarms in CM.
  • 2020-11-20 Dashboard

    October 2020

    Update Description Release Date Documentation
    Added support for Cloud Object Storage (COS) password-free access. Added support for authorizing access to COS through roles. Authorized users do not need to enter an authorization key and private key. 2020-10-26 -
    Added new service inspection items to the inspection system. Added the HDFS, YARN, HBase, Hive, and ZooKeeper service inspection items, enhancing the health check of metrics. 2020-10-13 Cluster Inspection
    Added support for customizing event policies. Added support for customizing event policies so you can identify cluster events more efficiently. 2020-10-13 Cluster Event

    September 2020

    Update Description Release Date Documentation
    Released a Hadoop cluster version—EMR v2.5.0. Upgraded the Alluxio component to the stable version 2.3.0, which delivers better performance in the use cases where compute and storage are separated. 2020-09-17 Component Version

    August 2020

    Update Description Release Date Documentation
    Released a Hadoop cluster version—EMR v2.4.0. Added the Kudu component and upgraded some existing components. 2020-08-27 Component Version
    Added support for data migration in ClickHouse clusters. Improved cluster resource utilization for data security.2020-08-17 ClickHouse Data Migration Guide

    July 2020

    Update Description Release Date Documentation
    Added support for custom configuration files. Added support for custom configuration files, which improves the flexibility of configuration management.2020-07-29 Configuration Management
    Optimized configuration item editing. Added descriptions for configuration items and support for restoring them to defaults. 2020-07-29 -

    June 2020

    Update Description Release Date Documentation
    Added support for Druid service monitoring and HBase Thrift role monitoring. Improved troubleshooting efficiency.2020-06-15 Druid Monitoring Metrics
    Released a Hadoop cluster version—EMR v2.3.0. Added support for the TensorFlow and Jupyter Notebook components. 2020-06-15 TensorFlow Overview
    Jupyter Notebook Overview
    Released ClickHouse v1.1.0 for ClickHouse clusters. Upgraded the ClickHouse component version to the LTS version, and added support for the Superset component.2020-06-15 -
    Added support for cluster events and cluster inspections. Added support for recording major change events and exception events in clusters in the console for improved efficiency of cluster troubleshooting. Added support for one-time inspections and periodical inspections, making it easier to keep track of the health of your clusters and to deal with exceptions and risks in time. 2020-06-04 Cluster Event
    Cluster Inspection

    May 2020

    Update Description Release Date Documentation
    Optimized console interactions, UI, and operation paths. Improved operation path hierarchy for easier service management.2020-05-15 -
    Added support for service monitoring for ClickHouse clusters. Made it easier to keep track of the operation status of ClickHouse clusters.2020-05-15 ClickHouse Monitoring Metrics
    Added support for monitoring status for role management. Made it easier to keep track of the real-time status of role processes. 2020-05-15 -

    April 2020

    Update Description Release Date Documentation
    Added new cluster types. Added support for the ClickHouse and Druid clusters to provide more real-time query solutions.2020-04-15 ClickHouse Overview
    Druid Overview
    Optimized bootstrap actions. Added support for the running occasions of bootstrap actions before a cluster starts. Added support for adjusting bootstrap actions after a cluster is created, so you can change your bootstrap actions based on business changes.2020-04-15 -
    Optimized service restart policies. Added support for setting service restart policies, so you can select a proper restart method and a policy for handling restart exceptions. 2020-04-15 -

    March 2020

    Update Description Release Date Documentation
    Optimized the cluster monitoring page. Optimized the cluster overview, service monitoring, and node monitoring pages for improved readability. Monitoring metrics now support customization and heat maps about nodes.2020-03 -
    Added support for log search. Added support for filtering by log file, node IP, and time range, and viewing cluster log content. (Currently, this feature is supported only in the Guangzhou region.)2020-03 Log Search
    Released EMR v2.2.0. Upgraded Hadoop to v2.8.5. Upgraded common components such as Spark, Hive, and HBase. Added the Hudi, Superset, Livy, Impala, Zeppelin, and Kylin components. 2020-03 Component Version

    February 2020

    Update Description Release Date Documentation
    Added support for sharing Hive metadatabase. Added support for associating an external Hive metadatabase to store the Hive metadata of a new cluster, so multiple Hive clusters can share metadata.2020-02 Hive Metadata Management
    Optimized cluster operation logs. Added display items for cluster operation logs to increase the readability of operation logs.2020-02 -
    Released the international version. Released the international version in the Beijing, Shanghai, Guangzhou, and Mumbai regions.2020-02 -

    January 2020

    Update Description Release Date Documentation
    Added support for cloud disk encryption. Added support for cloud disk encryption for Cloud Block Storage (CBS) users on the allowlist when creating an EMR cluster.2020-01 Cloud Disk Encryption
    Added support for mounting cloud disks to a task node. Added support for mounting cloud disks to a task node when creating or scaling out a cluster.2020-01 -
    Released EMR in the Nanjing region. Released EMR in the Nanjing region.2020-01 -

    December 2019

    Update Description Release Date Documentation
    Released the feature of delivering group configuration. Added support for delivering group configuration. If the configuration of a node is different from that of the configuration group to which the node belongs, the configuration of the configuration group can be delivered to the node.2019-12 -
    Released the feature of resource-level CAM authorization. Added support for CAM authorization at the resource level.2019-12 -
    Released the feature of associating CHDFS. Added support for associating CHDFS and reading/writing data on CHDFS.2019-12 Mounting CHDFS
    Released the AMD model. Released the AMD Standard SA2 model in the Beijing, Shanghai, and Guangzhou regions.2019-12 Instance Types
    Added the cluster monitoring overview page. Added the cluster monitoring overview page, which provides the views about the cluster, node, and service status.2019-12 Cluster Overview
    Added support for selecting metric display granularity as needed on the service monitoring page. Optimized the service monitoring page, so you can select a metric display granularity as needed.2019-12 -
    Added support for node service deployment and load status views on the node monitoring page. Optimized the node monitoring page, which provides the views about node service deployment and load status.2019-12 -

    November 2019

    Update Description Release Date Documentation
    Added support for node specification management. Added support for setting the default specification of nodes based on their billing mode. The default specification is pay-as-you-go.2019-11 Node Specification Management
    Added support for the configuration of the ZooKeeper, Alluxio, and Flink components. Added support for the configuration of the ZooKeeper, Alluxio, and Flink components.2019-11 -
    Released the feature of tagging clusters and nodes. Added support for tagging clusters and nodes.2019-11 Setting Tag
    Released new models in the Beijing, Shanghai, and Guangzhou regions. Released the S5, M5, C3, and CN3 models in the Beijing, Shanghai, and Guangzhou regions.2019-11 -

    October 2019

    Update Description Release Date Documentation
    Released EMR v3.0.0. Released EMR v3.0.0 with updated versions of major components.2019-10 Component Version

    September 2019

    Update Description Release Date Documentation
    Added full support for TencentCloud API 3.0. Added full support for TencentCloud API 3.0. Standardized the output/input parameters of certain existing v3.0 APIs. Added full support for v2.0 APIs in v3.0.2019-09 -
    Modified console configuration. Disused the escape feature for special characters.2019-09 -
    Added support for CM alarm policy configuration. Added support for configuring alarm policies in CM (in the Elastic MapReduce product category) for key metrics for node and service monitoring.2019-09 -

    August 2019

    Update Description Release Date Documentation
    Released the software configuration feature. Added support for software configuration, which enables you to create a cluster with custom component parameters. The feature of accessing external clusters was added as well.2019-08 Software Configuration
    Added support for configuring the remote login port when you purchase a cluster. Added support for enabling or disabling the remote login port when you purchase a cluster.2019-08 -
    Added support for mounting multiple cloud disks to a new cluster. Added support for mounting multiple cloud disks to a new cluster.2019-08 -
    Released the feature of scaling specified components. Added support for scaling specified components.2019-08 -
    Added monitoring metrics. Added new monitoring metrics for the Spark, Hive, Presto, and ZooKeeper components.2019-08 -

    July 2019

    Update Description Release Date Documentation
    Released the feature of HBase table-level monitoring. Added support for HBase table-level monitoring, which covers the number of read and write requests and storage of each table in HBase.2019-07 Service Status
    Released EMR in new regions. Added support for the Singapore, Mumbai, and Chengdu regions.2019-07 -
    Released new models. Released the Standard S4 and Standard Network-Optimized SN3ne models in the Beijing, Shanghai, and Guangzhou regions.2019-07 -
    Optimized the interactions of monitoring pages and added new monitoring metrics. Optimized the interactions of monitoring pages and added new monitoring metrics.2019-07 -
    Optimized WebUI proxy address. Optimized WebUI proxy address.2019-07 -

    June 2019

    Update Description Release Date Documentation
    Released the feature of accessing external clusters. Added support for accessing external clusters. 2019-06 -
    Released the feature of setting bootstrap actions. Added support for setting bootstrap actions. 2019-06 Bootstrap Actions
    Released the feature of delivering component parameter configuration to nodes. Added support for delivering component parameter configuration to nodes. 2019-06 -
    Released the feature of rolling back parameter configuration. Added support for rolling back parameter configuration. 2019-06 Configuration Rollback

    May 2019

    Update Description Release Date Documentation
    Released EMR v2.1.0. Released EMR v2.1.0 with updated versions of main components. 2019-05 Component Version
    Added support for Kerberos security clusters. Added support for creating security clusters. The open source components in clusters are launched in Kerberos security mode. In this security environment, only authenticated clients can access the services (such as HDFS) of the clusters. 2019-05 Kerberos Introduction
    Optimized monitoring metrics. Optimized the Node, HDFS, YARN, and HBase monitoring metrics. 2019-05 Node Monitoring Metrics
    Optimized the style of console. Improved the style of console for a better interactive experience. 2019-05 -
    Optimized CVM and TencentDB naming. Optimized CVM and TencentDB naming with the EMR cluster serial number for easier locating of cluster information. 2019-05 -
    Changed the setting of public IPs of master nodes to optional. Changed the setting of public IPs of master nodes to optional. 2019-05 -
    Released the feature of adjusting the number of common nodes. Added support for adjusting the number of common nodes as needed. 2019-05 -

    March 2019

    Update Description Release Date Documentation
    Released new models. Released the I3 model in the Beijing, Shanghai, and Guangzhou regions. This model is a CVM allowlist model, and you can purchase it only if you are in the I3 allowlist. 2019-03 -
    Released EMR in a new region. Made the purchase of EMR clusters available in the Silicon Valley region. 2019-03 -
    Added support for router nodes. Added support for router nodes, which are mainly used to relieve the load of master nodes and as task submitters. 2019-03 Node Type Description
    Released the feature of adjusting node configuration. Added support for adjusting node configuration. Nodes can be upgraded to a higher configuration. 2019-03 Adjusting Configuration

    January 2019

    Update Description Release Date Documentation
    Added new components to existing clusters. Added support for adding new components to existing clusters. 2019-01 Adding Components
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