<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[qq_35487744的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/qq_35487744</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; qq_35487744]]></copyright><item><title><![CDATA[初识Hive-配置]]></title><link>https://blog.youkuaiyun.com/qq_35487744/article/details/79568951</link><guid>https://blog.youkuaiyun.com/qq_35487744/article/details/79568951</guid><author>qq_35487744</author><pubDate>Thu, 15 Mar 2018 15:53:49 +0800</pubDate><description><![CDATA[HIVE的配置：    在hive的conf目录下有个hive-site.xml文件来设置hive运行时可用的选项    命令行下:hive --config /user/hive/conf-dir/来重新定义配置文件的目录，也可以通过设置HIVE_CONF_DIR环境变量达到相同的目的    hive-site.xml适合存放hadoop文件系统(fs.default.name)和jobtrac...]]></description><category></category></item><item><title><![CDATA[初识HIVE-Hive基础操作]]></title><link>https://blog.youkuaiyun.com/qq_35487744/article/details/79568939</link><guid>https://blog.youkuaiyun.com/qq_35487744/article/details/79568939</guid><author>qq_35487744</author><pubDate>Thu, 15 Mar 2018 15:40:03 +0800</pubDate><description><![CDATA[一、初识HIVE在安装并配置好环境变量的环境中运行 hive命令进入shell程序交互模式show tables;展示所有表hive -f script.q(非交互模式下运行编写好的脚本)类似的hive -e 'select * from table';1.创建一个test表，有3列，在文件中每行数据的列是由逗号“,”分割的    create table test (field1 STRING,...]]></description><category></category></item><item><title><![CDATA[Spring boot 配置profiles激活域]]></title><link>https://blog.youkuaiyun.com/qq_35487744/article/details/79291737</link><guid>https://blog.youkuaiyun.com/qq_35487744/article/details/79291737</guid><author>qq_35487744</author><pubDate>Thu, 08 Feb 2018 17:26:00 +0800</pubDate><description><![CDATA[]]></description><category></category></item><item><title><![CDATA[Spring boot 获得属性配置的优先级顺序]]></title><link>https://blog.youkuaiyun.com/qq_35487744/article/details/79291238</link><guid>https://blog.youkuaiyun.com/qq_35487744/article/details/79291238</guid><author>qq_35487744</author><pubDate>Thu, 08 Feb 2018 16:35:29 +0800</pubDate><description><![CDATA[(1) 命令行参数(2) java:comp/env里的JNDI属性(3) JVM系统属性(4) 操作系统环境变量50 第 3 章 自定义配置(5) 随机生成的带random.*前缀的属性（在设置其他属性时，可以引用它们，比如${random.long}）(6) 应用程序以外的application.properties或者appliaction.yml文件(7) 打包在应用程序内的applica...]]></description><category></category></item><item><title><![CDATA[Spring boot条件化注解]]></title><link>https://blog.youkuaiyun.com/qq_35487744/article/details/79290624</link><guid>https://blog.youkuaiyun.com/qq_35487744/article/details/79290624</guid><author>qq_35487744</author><pubDate>Thu, 08 Feb 2018 16:00:38 +0800</pubDate><description><![CDATA[@Conditional(实现了Condition接口的类) 满足某个自定义条件时才创建有该注解的Bean@ConditionalOnBean 配置了某个特定Bean@ConditionalOnMissingBean 没有配置特定的Bean 例如： @Bean        @ConditionalOnMissingBean(Bean_B.class)  public Bean_A getBean...]]></description><category></category></item><item><title><![CDATA[java volatile-浅述]]></title><link>https://blog.youkuaiyun.com/qq_35487744/article/details/79246201</link><guid>https://blog.youkuaiyun.com/qq_35487744/article/details/79246201</guid><author>qq_35487744</author><pubDate>Sat, 03 Feb 2018 13:22:22 +0800</pubDate><description><![CDATA[在功能上锁更强大，在性能上volatile更好！
volatile 的单个读写（注意仅仅是对单个变量的赋值和取值而不是其他的复杂操作，例如运算等）能够实现与锁相同的运行效果，也就是能实现一种运行的先后顺序。这个类似锁的实现是通过线程间的通信来做到的
线程A写入变量之前通知线程B我正在写数据先别读取，A写入后再通知B我已经写完了，你不要用你之前的东西来，我把这个东西更新了快来拿！
hahaha]]></description><category></category></item><item><title><![CDATA[Linux find 常用命令语法]]></title><link>https://blog.youkuaiyun.com/qq_35487744/article/details/79185209</link><guid>https://blog.youkuaiyun.com/qq_35487744/article/details/79185209</guid><author>qq_35487744</author><pubDate>Sun, 28 Jan 2018 11:04:21 +0800</pubDate><description><![CDATA[1. 按照文件名查找文件 -name选项
 
find [待查找目录] -name "[匹配方式]" -print (可有可无，默认已经带有print参数)
2. 按照文件权限查找 -perm选项
 find

[待查找目录] -perm 755（权限8进制代码）
3. 所属用户 -user，所属组 -group
4. 文件的mtime(修改时间)、atime（访问时间）、ctim]]></description><category></category></item></channel></rss>