Spark Note Book

package org.spark;public class app { public static void main(String[] args) { Convertor<Object> objConvertor = new Convertor<Object>(); String result = conver...

1. CyclicBarrier : 初始化count是固定的， 通常用于多个线程同时等待彼此，当所有线程到达某一点时，同时继续进行。例子： Int N = 3；final CyclicBarrier cb = new CyclicBarrier(N);for (int i = 0; i < N; i++) { new Thread(new Runnable(...