why the tuple size of CombinerAggregator/ReducerAggregator in apache-storm is always 0

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隐瞒了意图╮
隐瞒了意图╮ 2020-12-13 06:12

I recently started using storm Trident, and while reading the storm documentation, I ran into a problem that was difficult to understand, Below is my code



        
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