godfreyhe opened a new pull request #8288: [FLINK-12345] [table-planner-blink] Add support for generating optimized logical plan for stream window aggregate URL: https://github.com/apache/flink/pull/8288 ## What is the purpose of the change *Add support for generating optimized logical plan for stream window aggregate* ## Brief change log - *refactor batch window aggregate* - *add RelTimeIndicatorConverter to materialize rowtime/proctime type to timestamp type* - *add WindowAggregateReduceFunctionsRule to reduce complex aggregate function to simpler forms* - *add StreamExecGroupWindowAggregateRule to convert logical window aggregate to stream physical window aggregate* ## Verifying this change This change added tests and can be verified as follows: - *Added WindowAggregateTest that validates physical plan for window aggregate queries* - *Added RelTimeIndicatorConverterTest that validates plan after materialized* ## 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, Yarn/Mesos, ZooKeeper: (no) - The S3 file system connector: (no) ## Documentation - Does this pull request introduce a new feature? (no) - If yes, how is the feature documented? (not documented)
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