WeiZhong94 opened a new pull request #9370: [FLINK-13594][python] Improve the 'from_element' method of flink python api to apply to blink planner URL: https://github.com/apache/flink/pull/9370 ## What is the purpose of the change *This pull request reimplement the 'from_element' method of flink python api to make it available when the TableEnvironment's planner is Blink.* ## Brief change log - *Add `PythonCollectionInputFormatTableSource` class instead of DataStream API and DataSet API to receive the python elements from python process.* - *Adjust the python type system to apply to blink planner.* - *Improve some type-checking logic to support LegacyTypeInfomationType.* ## Verifying this change This change is already covered by existing tests, such as *test_calc.py* and *test_table_environment_api.py*. ## 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 applicable)
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