Elastic-Job-lite 版本，10个分片，单机每5秒执行一次，为何10个分片是分开执行，而不是同时执行

[weixin_38066592]

 开发四年只会写业务代码，分布式高并发都不会还做程序员？->>>    spring 配置如下： <job:simple  id="demoSimpleSpringJob5" class="com.coderxing.demo.MyElasticJob"  registry-center-ref="regCenter" cron="0/5 * * * * ?" sharding-total-count="10"  reconcile-interval-minutes="1" overwrite="true" /> 代码如下：  public class MyElasticJob implements SimpleJob { /** * shardingContext 包含作业的分片信息。 */ @Override public void execute(ShardingContext shardingContext) { System.out.println("========================="+new Date()); System.out.println(Thread.currentThread().getName() + ", id:" + shardingContext.getShardingItem() + ", total:" + shardingContext.getShardingTotalCount() + ", P:" + shardingContext.getShardingParameter()); } } 按照我的理解，一台机器上，应该是启动10个线程同时执行，但现象是每隔10秒，执行一个分片，执行结果如下： =========================Wed Aug 30 13:45:47 CST 2017 inner-job-demoSimpleSpringJob5-1, id:0, total:10, P:null =========================Wed Aug 30 13:45:52 CST 2017 inner-job-demoSimpleSpringJob5-2, id:1, total:10, P:null =========================Wed Aug 30 13:46:07 CST 2017 inner-job-demoSimpleSpringJob5-3, id:2, total:10, P:null =========================Wed Aug 30 13:46:12 CST 2017 inner-job-demoSimpleSpringJob5-4, id:3, total:10, P:null =========================Wed Aug 30 13:46:27 CST 2017 inner-job-demoSimpleSpringJob5-5, id:4, total:10, P:null =========================Wed Aug 30 13:46:32 CST 2017 inner-job-demoSimpleSpringJob5-6, id:5, total:10, P:null =========================Wed Aug 30 13:46:47 CST 2017 inner-job-demoSimpleSpringJob5-7, id:6, total:10, P:null =========================Wed Aug 30 13:46:52 CST 2017 inner-job-demoSimpleSpringJob5-8, id:7, total:10, P:null =========================Wed Aug 30 13:47:07 CST 2017 inner-job-demoSimpleSpringJob5-9, id:8, total:10, P:null  

[weixin_38067385]

分在同一运行实例的是多线程并行执行。在不同运行实例的，时钟也不可能完全一致，因此有先后

[weixin_38074583]

这是idea的锅，这个IDE多线程不能并发执行