godfreyhe opened a new pull request #8499: [FLINK-12575] [table-planner-blink] Introduce planner rules to remove redundant shuffle and collation URL: https://github.com/apache/flink/pull/8499 ## What is the purpose of the change *Introduce planner rules to remove redundant shuffle and collation* ## Brief change log - *Added WindowGroupReorderRule that makes the over window groups which have the same shuffle keys and order keys together* - *Implements satisfyTraitsByInput methods for batch operator to reduce shuffle and sort* - *Added RemoveRedundantLocalHashAggRule, RemoveRedundantLocalSortAggRule and RemoveRedundantLocalRankRule to remove redundant local operator after the exchange between local operator and global operator is removed* ## Verifying this change This change added tests and can be verified as follows: - *Added WindowGroupReorderRuleTest that validates the result after WindowGroupReorderRule is applied* - *Added RemoveShuffleTest that validates the result after redundant shuffle is removed* - *Added RemoveCollationTest that validates the result after redundant sort is removed* - *Added RemoveRedundantLocalHashAggRuleTest, RemoveRedundantLocalSortAggRuleTest and RemoveRedundantLocalRankRuleTest that validates the result after redundant local operator is removed* ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): (yes / **no**) - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (yes / **no**) - The serializers: (yes / **no** / don't know) - The runtime per-record code paths (performance sensitive): (yes / **no** / don't know) - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (yes / **no** / don't know) - The S3 file system connector: (yes / **no** / don't know) ## Documentation - Does this pull request introduce a new feature? (yes / **no**) - If yes, how is the feature documented? (not applicable / docs / JavaDocs / **not documented**)
---------------------------------------------------------------- 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. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services
