Release notes (December 16, 2021) - Realtime Compute for Apache Flink

This topic describes the release notes for Realtime Compute for Apache Flink and provides links to relevant references. The release notes provide the major updates and bug fixes in Realtime Compute for Apache Flink in the version that was released on December 16, 2021.

Major updates on the platform

Change type	Feature	Description
New	Deployment exploration Note If you want to use this feature for a deployment, you must enable log archiving in the log template or turn on Allow Log Archives in the Logging section of the Configuration tab for the deployment.	The startup logs, operational logs, and historical logs of a Realtime Compute for Apache Flink deployment are displayed in the Realtime Compute for Apache Flink console. For more information, see View the logs of a historical job and View the startup logs and operational logs of a deployment. The performance of the JobManager and TaskManagers for deployments that are running can be analyzed. You can view the analysis results on the Flame Graph, Memory, and Threads tabs. For more information, see Monitor deployment performance.
	Creation of catalogs on the UI	Hive, Hologres, and MySQL catalogs can be created on the UI.
	Detection of state compatibility	If you select a historical state to restore a job, the system checks the state compatibility to determine the impact of the restoration on your business.
	Replacement of variables	General variables, such as an AccessKey pair, can be configured and referenced in SQL statements. For more information, see Manage variables and keys.
Optimized	Fine-grained SQL configurations	Results of fine-grained chain analysis can be displayed. Operator-level resource configurations are supported.
	Alert information	Deployment names are added to alert information to help you identify the deployments that are affected.
	UI	The UI on which catalogs are created is optimized.

Major updates in VVR 3.0.7 and VVR 4.0.11

Change type	Feature
VVR 3.0.7	The deployment exploration feature is supported.
VVR 3.0.7	Known issues of Apache Flink 1.12 are fixed.
VVR 4.0.11	The commercial features of Flink Change Data Capture (CDC) are released: Schema evolution is supported. Flink SQL semantics that is used for database synchronization is supported. For more information, see CREATE TABLE AS statement, CREATE DATABASE AS statement, and Ingest data into data warehouses in real time.
	The Gemini state backend can be used to store state data in Object Storage Service (OSS).
	The deployment resource management scheme is optimized.
	The DataStream connector is optimized. For more information, see MySQL CDC DataStream connector.
	The exception of the Gemini state backend is fixed.
	Known issues of Apache Flink 1.13 are fixed.