Github user ifndef-SleePy commented on the issue: https://github.com/apache/flink/pull/3487 Thank you, Stephan and zentol. Good question and suggestion. I didn't consider it too much for batch jobs. Also I think it's a bad idea that naming the variable "numberOfKeyGroups" in TaskInfo. Keeping max-parallelism is better. It's more common and makes much more sense for other scenarios. I will make sure it can work with batch jobs, and update this PR later.
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