Java多线程处理千万级数据更新操作

//查询id
while(id<maxid){
Integer id = mapper.selectList().get(0);
List list = mapper.selectList(Wrappers.<order>lambdaQuery()
        .gt(order::getId,id)
        .last("limit 10000");
for(){
处理数据
update数据
}
id = list.get(10000).getId();
updateId();
}

private static List list;
//线程处理
public void run(){
    List dataList;
    while(true){
        synchronized(xx.class){
            if(list.size() == 0){
                list = getList();
            }
            //再判断一次，如果为空就是处理完了
            if(orderList == null || orderList.size() == 0) {
                return;
            }
            //取最后1千条
            dataList = new ArrayList<>(list.subList(list.size()-1000,list.size()));
            //减去最后一千条
            list = list.subList(0,list.size()-1000);
        }
        //处理dataList
        for(Order order:dataList){
        ...
        }
    }
}

public static void main(String[] args) {
    List<Integer> list = new ArrayList<>();
    for(int i=0;i<100;i++){
        list.add(i);
    }
    while(list.size() >=10){
        //取最后10条
        List<Integer> dataList = list.subList(list.size()-10,list.size());
        //List<Integer> dataList = list.stream().skip(Math.max(0, list.size() - 10)).collect(Collectors.toList()) ;
        ListThread listThread = new ListThread(dataList);
        listThread.start();
        //去掉最后10条数据
        list = list.subList(0,list.size()-10);
    }

    list.add(33333);
}


class ListThread extends Thread{
    private List<Integer> list;

    public ListThread(List list){
        this.list = list;
    }

    public void run(){
        try {
            Thread.sleep(5000);
        } catch (InterruptedException e) {
            throw new RuntimeException(e);
        }
        System.out.println(Thread.currentThread().getName()+"开始打印数据======");
        for(int i=0;i<list.size();i++){

            System.out.println(list.get(i));
        }
    }

}

List<Integer> dataList = new ArrayList<>(list.subList(list.size()-10,list.size()));
//或者使用stream流
List<Integer> dataList = list.stream().skip(Math.max(0, list.size() - 10)).collect(Collectors.toList()) ;