zoudan opened a new pull request, #23849: URL: https://github.com/apache/flink/pull/23849
## What is the purpose of the change Support plan cache for DQL in SQL Gateway, so that we could reuse the plan and save time on SQL parsing, validation, and optimization. ## Brief change log - Add a PlanCacheManager to save the cached plan. - Gateway may reuse the plan in PlanCacheManager when execute a DQL. ## Verifying this change This change added tests and can be verified as follows: - Add test cases in SqlGatewayServiceStatementITCase, and all these new DQL will execute for twice with plan cache enabled to ensure that plan cache works well. ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): (no) - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (no) - The serializers: (no) - The runtime per-record code paths (performance sensitive): (no) - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn, ZooKeeper: (no) - The S3 file system connector: (no) ## Documentation - Does this pull request introduce a new feature? (yes) - If yes, how is the feature documented? (JavaDocs) -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@flink.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org