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    Realtime Compute for Apache Flink:March 29, 2026

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    Realtime Compute for Apache Flink:March 29, 2026

    Last Updated:Jun 22, 2026

    Learn about feature updates and bug fixes in the March 29, 2026 release of Realtime Compute for Apache Flink.

    Important

    This upgrade is rolled out in phases across all regions. For the detailed upgrade schedule, see the latest announcements on the right side of the console. If the new features are not yet available in your account, your account has not been included in the current rollout phase. To request an expedited upgrade, submit a ticket, and requests are handled on a case-by-case basis.

    Overview

    This release improves stability, security, and usability across four areas: expanded OpenAPI capabilities, better task orchestration, enhanced business stability, and stronger access control.

    Platform

    New capabilities

    • Maintenance windows:

      • Customization: Set a recurring maintenance window at the namespace level to define when resource changes are allowed, including version upgrades, hot configuration updates, and node migrations. Underlying service maintenance strictly adheres to this window to minimize business impact.

      • Maintenance event management: Define abnormal events, centrally view them during maintenance windows, and receive notifications to ensure critical alerts are not missed.

    • DNS resolution with private DNS integration: Integrate with private DNS services through the PrivateZone forwarding management feature. Workspace domain name management now validates Fully Qualified Domain Names (FQDNs) for custom domain names and IP addresses to support domain resolution in complex network environments.

    • High availability for hybrid billed workspaces: Enable high availability for namespaces that use the hybrid billing model. During a failure, jobs on fixed resources are migrated first, while elastic resources are handled on a best-effort basis at no extra charge.

    Enhancements

    • Optimized storage migration for cross-namespace cloning: Upgraded workspace storage architecture to improve complete migration of metadata and user files during cloning, ensuring data consistency and integrity across regions and instances.

    • Accelerated file uploads for regions outside the Chinese mainland: Enable an OSS (Object Storage Service) transfer acceleration domain name to improve cross-border upload performance for workspaces in regions outside the Chinese mainland.

    • Improved workflow task selection: Optimized job selector interaction logic for faster loading and more responsive search, making it easier to locate target nodes among many jobs.

    • Enhanced cron expression validation for Workflows: Real-time frontend validation of cron expressions now flags invalid formats immediately, reducing job submission failures caused by incorrect scheduling configurations.

    • Resizable "Job Name" column in the Workflows job list: Drag to adjust the width of the job name column to prevent long job names from being truncated.

    • Confirmation prompt for deleting UDF JAR packages: A confirmation dialog box now appears when you delete a UDF JAR package to prevent accidental deletions that could cause production jobs to fail.

    REST API

    New and improved REST API operations in this release:

    • Batch-operate on job instances by job ID to simplify centralized management of large-scale tasks.

    • Create, edit, delete, and run temporary SQL scripts through new data query OpenAPI operations, enabling API-driven automation of interactive analysis workflows.