Realtime Compute for Apache Flink:Limits

Browser: The Realtime Compute for Apache Flink console supports access only from browsers that use the Chrome kernel.

CUs: The number of CUs that you can purchase at a time must be less than or equal to 1,000 when you purchase a subscription workspace. If you want to purchase more than 1,000 CUs, submit a ticket.

Network: Realtime Compute for Apache Flink cannot access the Internet. For more information about how to access the Internet, see How does the fully managed Flink service access the Internet?

Performance: In simple streaming stress testing scenarios such as single-stream filtering and string conversion, one CU of Realtime Compute for Apache Flink can process 40,000 to 55,000 data records per second. In complex streaming stress testing scenarios such as JOIN, GROUP BY, and window functions, one CU of Realtime Compute for Apache Flink can process 5,000 to 10,000 data records per second. For more information, see Performance white paper (Nexmark performance testing).

Others:

• A maximum of 5,000 namespaces can be created by using an Alibaba Cloud account.

• A maximum of 200 user-defined functions (UDFs) or JAR packages can be uploaded in a workspace.

• A maximum of 100 folders can be created for a workspace. A maximum of five levels of folders are supported.

• A folder can contain a maximum of 500 files or directories.