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Therefore, we propose to support only full window processing on DataStream. This feature is designed to work only in batch mode when RuntimeExecutionMode=BATCH and does not support checkpointing. If user specifies the stream mode RuntimeExecutionMode=STREAMING, the job will be failed to submit. Given this premise, the underlying implementation can avoid the aforementioned conflict issues by not relying on keyed state for window processing.

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The PartitionWindowedStream class will be annotated by @PublicEnvolving @PublicEnvolving as more APIs may be added in the future.

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