link3280 opened a new pull request #6932: [Flink-10680][streaming] Fix IllegalArgumentException caused by negative offset in TumblingWindows URL: https://github.com/apache/flink/pull/6932 ## What is the purpose of the change By design, the offset could be either positive or negative to fit in different time zones, but there's a check that ensures the offset is greater than zero. This PR fixes the IllegalArguementException caused by negative offsets in TumblingEventTimeWindows and TumblingProcessingTimeWindows. ## Brief change log - Change the condition of the parameter checks in TumblingEventTimeWindows and TumblingProcessingTimeWindows from `0 <= offset < size` to `0 <= abs(offset) < size`. ## Verifying this change This change added tests and can be verified as follows: - Updated the tests for invalid parameters for time window assigners. - Added tests for negative offsets of time windows. ## 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)`: yes - 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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