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How to carry out AppClient source code analysis in Driver, I believe that many inexperienced people are at a loss about this. Therefore, this paper summarizes the causes and solutions of the problem. Through this article, I hope you can solve this problem.

Let's start with the creation of the TaskScheduler instance in SparkContext:

It can be found that inside the concrete implementation of start, there is a backend.start method first.

The final concrete implementation class is:

ClientActor is started at this point:

After reading the above, have you mastered how to analyze the AppClient source code in Driver? If you want to learn more skills or want to know more about it, you are welcome to follow the industry information channel, thank you for reading!

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