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The current strategy of Flink to deploy tasks sometimes leads some TMs have more tasks while others have fewer tasks, resulting in excessive resource utilization at some TMs that contain more tasks and becoming a bottleneck for the entire job processing. Developing strategies to achieve task load balancing for TMs and reducing job bottlenecks becomes very meaningful.

The raw design doc with discussion is recorded in [1].

1.1 Current strategy

1.1.1 Rule of slot sharing strategy when generating the mapping task to slot.

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