Github user DylanGuedes commented on the issue: https://github.com/apache/spark/pull/21045 @mgaido91 thank you, the suggestions were VERY enlightening! You are correct, I tried to return the expected output in `doGenCode`, according with others implementations I thougth that it was the expected thing to do. Great to know! And, I know that the PR is not the correct place to ask but, what UT means? And which debugger do you use/recommend? I'm currently using an editor and terminal. cheers
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