本文介绍安装spark单机环境的方法,可用于测试及开发.主要分成以下4部分: (1)环境准备 (2)安装scala (3)安装spark (4)验证安装情况 1.环境准备 (1)配套软件版本要求:Spark runs on Java 6+ and Python 2.6+. For the Scala API, Spark 1.3.1 uses Scala 2.10. You will need to use a compatible Scala version (2.10.x). (2)安装好l…
IIS上在主站点下搭建虚拟目录后,子站点中的<system.web>节点与主站点的<system.web>冲突解决方法: 在主站点的<system.web>上一级添加父节点: <location path="." allowOverride="false" inheritInChildApplications="false">     <system.web>         <!…
since LTE came out, with thin client cloud computing  and broadband communication clouding 不攻自破了.but just only a part. 版权声明:本文为博主原创文章,未经博主允许不得转载.…
1.       问题 C++如何实现不能被继承的类,即终结类.Java中有final关键字修饰,C#中有sealed关键字修饰,而C++目前还没有类似的关键字来修饰类实现终结类,需编程人员手动实现.   2.       解决方法 基本思路:由于任何派生类的对象在创建的时候,都必需在派生类的构造函数中调用父类的构造函数.所以,只要类的构造函数在子类中无法被访问,那么就阻止了该类被继承,实现终结类. 如果将一个类的构造函数声明为私有(private),可以阻止该类进一步派生,但是该类也无法直接实…
Dungeon Master Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 20995 Accepted: 8150 Description You are trapped in a 3D dungeon and need to find the quickest way out! The dungeon is composed of unit cubes which may or may not be filled wit…
Mad scientist Mike has constructed a rooted tree, which consists of n vertices. Each vertex is a reservoir which can be either empty or filled with water. The vertices of the tree are numbered from 1 to n with the root at vertex 1. For each vertex, t…
Beautiful People Time Limit: 10000/5000MS (Java/Others) Memory Limit: 128000/64000KB (Java/Others)     Special Judge SubmitStatus Problem Description The most prestigious sports club in one city has exactly N members. Each of its members is strong an…
FatMouse' Trade Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 42953    Accepted Submission(s): 14336 Problem Description FatMouse prepared M pounds of cat food, ready to trade with the cats g…
搬家啦,上博客园关注我哦http://www.cnblogs.com/AsuraRoute 版权声明:本文为博主原创文章,未经博主允许不得转载.…
任务:把服务器1上的SQL数据库自动备份到服务器2上,命名格式=数据库名+年月日+小时. 说明: 服务器2=>192.168.0.22 数据库名=>Book 共享文件夹路径:192.168.0.22\Book 解决: 在服务器1新建一个作业,主要内容如下: exec master..xp_cmdshell 'net use Y: \\192.168.0.22\Book "数据库密码" /user:192.168.0.22\administartor' declare @sq…