intersection
用来找到两个rdd的交集,注意,最终的new rdd的分区数量取决于两个rdd中的最大分区数量。
测试一下:
val data1 = sc.parallelize(1 to 20,1)
val data2 = sc.parallelize(1 to 5,2)
val data3 = data1.intersection(data2)
data3.partitions.length
data3.collect
输出结果是1,2,3,4,5
data3的分区数量是2
intersection的更多相关文章
- [LeetCode] Intersection of Two Arrays II 两个数组相交之二
Given two arrays, write a function to compute their intersection. Example:Given nums1 = [1, 2, 2, 1] ...
- [LeetCode] Intersection of Two Arrays 两个数组相交
Given two arrays, write a function to compute their intersection. Example:Given nums1 = [1, 2, 2, 1] ...
- [LeetCode] Intersection of Two Linked Lists 求两个链表的交点
Write a program to find the node at which the intersection of two singly linked lists begins. For ex ...
- 【leetcode】Intersection of Two Linked Lists
题目简述: Write a program to find the node at which the intersection of two singly linked lists begins. ...
- [LintCode] Intersection of Two Linked Lists 求两个链表的交点
Write a program to find the node at which the intersection of two singly linked lists begins. Notice ...
- LeetCode Intersection of Two Arrays
原题链接在这里:https://leetcode.com/problems/intersection-of-two-arrays/ 题目: Given two arrays, write a func ...
- Intersection of Two Linked Lists
Write a program to find the node at which the intersection of two singly linked lists begins. For ex ...
- LeetCode Intersection of Two Arrays II
原题链接在这里:https://leetcode.com/problems/intersection-of-two-arrays-ii/ 题目: Given two arrays, write a f ...
- LeetCode 350. Intersection of Two Arrays II
Given two arrays, write a function to compute their intersection. Example:Given nums1 = [1, 2, 2, 1] ...
- LeetCode 349. Intersection of Two Arrays
Given two arrays, write a function to compute their intersection. Example:Given nums1 = [1, 2, 2, 1] ...
随机推荐
- .net 的一个分词系统(jieba中文分词的.NET版本:jieba.NET)
简介 平时经常用Python写些小程序.在做文本分析相关的事情时免不了进行中文分词,于是就遇到了用Python实现的结巴中文分词.jieba使用起来非常简单,同时分词的结果也令人印象深刻,有兴趣的可以 ...
- svn切换用户
问题背景:你用一个用户更新了代码,此时想用另一个用户提交,这就涉及到一个svn切换用户的问题 1. 查看svn 的用户名,密码:找到用户名,密码文件,都是明文的,你可以看到例:linuxhjj@hjj ...
- 解决港版A1530 ios8 联通4G 电话打不进无法接通的问题,联通4G开关开启方法
GF的iPhone5s港版A1530联通4G老是出现无法接通的问题, 根本原因是没有4G开关.港行iPhone却只有3G开关.也就是说,当启动3G时,却搜到4G信号,但是关闭时却只能关闭3G和2G.让 ...
- Ubuntu上如何安装Java,Eclipse,Pydev,Python(自带,不用装),BeautifulSoup
如何安装Java,如果出于编程的需要安装Java,需要安装的是JDK,而不仅仅是JRE,下面说说如何在Ubuntu下如何安装JDK:只有两步,1.下载并解压,2.配置环境变量1.下载并解压:下载地址: ...
- jstl数字转日期
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %> <jsp: ...
- css form 表单组对齐
2014年7月1日 15:31:17 第一次写css,见谅 css: .form-box .form-group .form-label {text-align: right; width: 200p ...
- Java入门的程序汇总
Java入门的基础程序,虽然很简单,也要多练习,下面有重点的总结一下 1.HelloWorld这个不说了 2.常量与变量部分 基本数据类型使用 public class Javashujuleixin ...
- codeforces 478B Random Teams 解题报告
题目链接:http://codeforces.com/problemset/problem/478/B 题目意思:有 n 个人,需要将这班人分成 m 个 组,每个组至少含有一个人,同一个组里的人两两可 ...
- google maps js v3 api教程(2) -- 在地图上添加标记
原文链接 google maps javascript官方文档:https://developers.google.com/maps/documentation/javascript/ 我们在创建地图 ...
- VS 高亮显示不带后缀的C++头文件
工具-选项-文本编辑器-文件扩展名-勾选“将无扩展名文件映射到(M)” Microsoft Visual C++