Spark java.lang StackOverFlow错误将Custom类Object转换为DataSet时

Question

public class OuterClass implements Serializable {
int id;
ArrayList<InnerClass> listofInner;

public int getId() {
    return id;
}

public void setId(int num) {
    this.id = num;
}

public ArrayList<InnerClass> getListofInner() {
    return listofInner;
}

public void setListofInner(ArrayList<InnerClass> list) {
    this.listofInner = list;
}

public static class InnerClass implements Serializable {
    String streetno;
    private List<InnerClass> children = new ArrayList<InnerClass>();

    public void setStreetno(String streetno) {
        this.streetno = streetno;
    }

    public String getStreetno() {
        return streetno;
    }

    public List<InnerClass> getChildren() {
        return children;
    }

    public void setChildren(List<InnerClass> children) {
        this.children = children;
    }
}

}

OuterClass us = new OuterClass();
    us.setId(111);
    //Inner
    OuterClass.InnerClass ic = new OuterClass.InnerClass();
    ic.setStreetno("My Street");

    ic.getChildren().add(new OuterClass.InnerClass());

ArrayList<OuterClass.InnerClass> ar = new ArrayList<OuterClass.InnerClass>();
    ar.add(ic);
    us.setListofInner(ar);


    //DF
    Encoder<OuterClass> outerClassEncoder = Encoders.bean(OuterClass.class);
    Dataset<OuterClass> ds = spark.createDataset(Collections.singletonList(us), outerClassEncoder);

在上面 InnerClass 类中有属性 List children = new ArrayList（）;这是一种 InnerClass 列表。因此，当我尝试将此自定义对象转换为数据集时。我收到错误

java.lang.StackOverflowError：null     at sun.reflect.generics.reflectiveObjects.TypeVariableImpl.equals（TypeVariableImpl.java:189）。

如果我从InnerClass中删除 children 属性。它工作正常。

所以任何人请帮助我.. :)