<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[qq_45909136的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/qq_45909136</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; qq_45909136]]></copyright><item><title><![CDATA[VMware Workstation cannot connect to the virtual machine.]]></title><link>https://blog.youkuaiyun.com/qq_45909136/article/details/130483675</link><guid>https://blog.youkuaiyun.com/qq_45909136/article/details/130483675</guid><author>qq_45909136</author><pubDate>Thu, 04 May 2023 11:34:05 +0800</pubDate><description><![CDATA[VMware Workstation cannot connect to the virtual machine. Make sure you have rights to run the program, access all directories the program uses, and access all directories for temporary files.]]></description><category></category></item><item><title><![CDATA[Method XXX should have no parameters]]></title><link>https://blog.youkuaiyun.com/qq_45909136/article/details/130353678</link><guid>https://blog.youkuaiyun.com/qq_45909136/article/details/130353678</guid><author>qq_45909136</author><pubDate>Mon, 24 Apr 2023 22:23:37 +0800</pubDate><description><![CDATA[今天在测试HBase过滤器代码的时候，一直报错 Method filterStuAndPrint should have no parameters。T搜了一下才发现，原来是用Junit的@test不能有返回值和参数，把相应代码块的@Test删掉即可。]]></description><category></category></item><item><title><![CDATA[解决Maven导入依赖resolving maven dependencies问题]]></title><link>https://blog.youkuaiyun.com/qq_45909136/article/details/130315232</link><guid>https://blog.youkuaiyun.com/qq_45909136/article/details/130315232</guid><author>qq_45909136</author><pubDate>Sun, 23 Apr 2023 10:04:00 +0800</pubDate><description><![CDATA[我们查阅官方文档可以发现 这貌似是修改下载速度的，于是我们直接拉满（参考其他博主的）]]></description><category></category></item><item><title><![CDATA[Hadoop的优化]]></title><link>https://blog.youkuaiyun.com/qq_45909136/article/details/130253146</link><guid>https://blog.youkuaiyun.com/qq_45909136/article/details/130253146</guid><author>qq_45909136</author><pubDate>Wed, 19 Apr 2023 21:17:22 +0800</pubDate><description><![CDATA[随机生成温度代码​​​//创建日期格式​​i < 10000;i++) {//随机生成时间2000-2023//随机生成一个温度//打印生成的结果​​需求：查询某一年，某一月的最高的温度。]]></description><category></category></item><item><title><![CDATA[count(*)、count(1) 、count(‘字段名‘) 区别]]></title><link>https://blog.youkuaiyun.com/qq_45909136/article/details/130230838</link><guid>https://blog.youkuaiyun.com/qq_45909136/article/details/130230838</guid><author>qq_45909136</author><pubDate>Tue, 18 Apr 2023 20:45:07 +0800</pubDate><description><![CDATA[SQL中count(*)、count(1) 、count('字段名') 区别]]></description><category></category></item><item><title><![CDATA[Hadoop集群搭建（完全分布式版本）]]></title><link>https://blog.youkuaiyun.com/qq_45909136/article/details/129937550</link><guid>https://blog.youkuaiyun.com/qq_45909136/article/details/129937550</guid><author>qq_45909136</author><pubDate>Tue, 18 Apr 2023 20:43:25 +0800</pubDate><description><![CDATA[8、访问HDFS的WEB界面9、访问YARN的WEB界面Hadoop中的常见的shell命令​1、如何将linux本地的数据上传到HDFS中呢？hadoop fs -put 本地的文件 HDFS中的目录hdfs dfs -put 本地的文件 HDFS中的目录​2、如何创建HDFS中的文件夹呢？需求：想创建/shujia/bigdata17​3、查看当前HDFS目录下的文件和文件夹​4、将HDFS的文件下载到Linux本地中。]]></description><category></category></item><item><title><![CDATA[初识Hadoop]]></title><link>https://blog.youkuaiyun.com/qq_45909136/article/details/129937490</link><guid>https://blog.youkuaiyun.com/qq_45909136/article/details/129937490</guid><author>qq_45909136</author><pubDate>Mon, 03 Apr 2023 19:38:12 +0800</pubDate><description><![CDATA[注意：课程中的hadoop版本以CDH版本为准，稳定且主流，目前国内主流的是2.x，如果面试的时候说你用的是3.x可能会有些不一样。。。。并且2.x的变化都不大Hadoop Common：基础型功能Hadoop Distributed File System (HDFS™)：一种分布式文件系统，可提供对应用程序数据的高吞吐量访问。负责存放数据Hadoop YARN：作业调度和集群资源管理的框架。负责资源的调配Hadoop MapReduce：基于 YARN 的系统，用于并行处理大型数据集。大数据的计算框架H]]></description><category></category></item><item><title><![CDATA[MySQL之JDBC]]></title><link>https://blog.youkuaiyun.com/qq_45909136/article/details/129846779</link><guid>https://blog.youkuaiyun.com/qq_45909136/article/details/129846779</guid><author>qq_45909136</author><pubDate>Thu, 30 Mar 2023 21:57:03 +0800</pubDate><description><![CDATA[Java DataBase Connectivity（Java语言连接数据库）]]></description><category></category></item><item><title><![CDATA[Maven的安装以及简单使用]]></title><link>https://blog.youkuaiyun.com/qq_45909136/article/details/129846156</link><guid>https://blog.youkuaiyun.com/qq_45909136/article/details/129846156</guid><author>qq_45909136</author><pubDate>Wed, 29 Mar 2023 22:08:53 +0800</pubDate><description><![CDATA[Maven字面意思：专家、内行Maven是一款自动化构建工具，专注服务于Java平台的项目构建和依赖管理。依赖管理：jar之间的依赖关系，jar包管理问题统称为依赖管理项目构建：项目构建不等同于项目创建项目构建是一个过程【7步骤组成】，项目创建是瞬间完成的清理：mvn clean编译：mvn compile测试：mvn test报告：打包：mvn package安装：mvn install。]]></description><category></category></item><item><title><![CDATA[Java面向对象]]></title><link>https://blog.youkuaiyun.com/qq_45909136/article/details/129803960</link><guid>https://blog.youkuaiyun.com/qq_45909136/article/details/129803960</guid><author>qq_45909136</author><pubDate>Mon, 27 Mar 2023 22:04:22 +0800</pubDate><description><![CDATA[我们学习编程语言最终目的是用程序去模拟现实生活中的事物，让事物与事物之间产生关系，然后模拟现实生活中的场景。属性：就是对事物的描述      -------成员变量行为：就是事物能够做什么事情 -------成员方法成员变量：在类中方法外定义的变量都叫成员变量语句定义格式：修饰符 数据类型 变量名;​成员方法：在类中定义定义的格式与我们在学习时规范的定义语法是一样：​修饰符 返回值类型 方法名(参数类型1 参数名1,....){方法体;注意：现在开始将static去掉！！！！]]></description><category></category></item><item><title><![CDATA[Java 方法、数组]]></title><link>https://blog.youkuaiyun.com/qq_45909136/article/details/129802322</link><guid>https://blog.youkuaiyun.com/qq_45909136/article/details/129802322</guid><author>qq_45909136</author><pubDate>Mon, 27 Mar 2023 20:44:05 +0800</pubDate><description><![CDATA[完成特定功能的代码块语句定义格式：修饰符 返回值类型 方法名(参数类型 参数名1,参数类型 参数名2...){函数体;return 返回值;名词解释：修饰符：对方法所施加的权限修饰，目前我们还没有讲到修饰符的概念，所以这两天只需要记住一种修饰写法：public static其余的修饰符写法，我们说到面向对象的时候细讲返回值类型：分为两类，一类是有返回值，一类是无返回值，类型是由方法中是否有return决定的。]]></description><category></category></item><item><title><![CDATA[Java中的变量、数据类型、运算符、键盘录入、流程控制语句]]></title><link>https://blog.youkuaiyun.com/qq_45909136/article/details/129801681</link><guid>https://blog.youkuaiyun.com/qq_45909136/article/details/129801681</guid><author>qq_45909136</author><pubDate>Mon, 27 Mar 2023 19:46:29 +0800</pubDate><description><![CDATA[定义：在程序执行的过程中，在某个范围内其值可以发生改变的量​变量定义方式 ：数据类型 变量名 = 初始化值;]]></description><category></category></item><item><title><![CDATA[初识Java]]></title><link>https://blog.youkuaiyun.com/qq_45909136/article/details/129800037</link><guid>https://blog.youkuaiyun.com/qq_45909136/article/details/129800037</guid><author>qq_45909136</author><pubDate>Mon, 27 Mar 2023 19:11:10 +0800</pubDate><description><![CDATA[记录一些平时学习Java时的东西]]></description><category></category></item></channel></rss>