Spark Java - 如何迭代数据帧数据集中的行<Row> , 并将一列的值添加到 Arraylist

Question

I have a Dataset<Row> containing 3 columns in Java . I want to iterate on its rows, then add the values of this column to an ArrayList . Could anyone help me?

Please take on consideration that I work in Java .

Thank you.

Answer 1

Thank you Ernest Kiwele.

it worked in this way :

List<Row> arrayList= new ArrayList<>();
arrayList=dataset.collectAsList();

Answer 2

你也可以使用 dataset.forEach( row ->syso(row));