use this val data = sc.textFile("/home/spark/data.txt") this should work and set master as local. Input path does not exist解决方法 spark-submit --master local 即可解决! 参考:https://stackoverflow.com/questions/41339127/how-to-load-local-file-using-sc-tex
http://blog.sina.com.cn/s/blog_62defbef0101opv0.html http://blog.163.com/donfang_jianping/blog/static/136473951201421392635119/ http://blog.163.com/donfang_jianping/blog/static/1364739512012119104823260/ 查看参数job_queue_processes是否设置正确.可用下面语句修改:alter s
public abstract class PoolEntry<T, C> { private final String id; private final T route; //路由 private final C conn; //http连接 private final long created; //创建时间 private final long validityDeadline; private long updated; private long expiry; private vo
1. 线程池可以节省创建多个线程带来的开销问题. 2. 线程池的参数如下: public ThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit, BlockingQueue<Runnable> workQueue) { this(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue, Execut
java5中新增了可变参数,这个可变参数和C语言中的用法是差不多,但实现起来却不一样. 下面我们一起来看看吧. 其实可变参数就是一个数组 class A{ public void func(int... argum){ for(int i = 0;i < argum.length;i++){ System.out.println(argum[i]); } } } 而且定义起来相当的简单,只需要在类型后面打上三个. 就行. 下面来看看具体使用 public class Main { public
