<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[vrtica的博客]]></title><description><![CDATA[成长中点滴 点滴中成长]]></description><link>https://blog.youkuaiyun.com/vrtica</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; vrtica]]></copyright><item><title><![CDATA[linux安装hadoop笔记]]></title><link>https://blog.youkuaiyun.com/vrtica/article/details/52149468</link><guid>https://blog.youkuaiyun.com/vrtica/article/details/52149468</guid><author>vrtica</author><pubDate>Wed, 17 Jan 2024 14:38:09 +0800</pubDate><description><![CDATA[从官方下载hadoop的src，然后重新打包编译成64位


打包编译过程，安装软件过程：
more BUILDING.txt



* Unix System
* JDK 1.7+
* Maven 3.0 or later
* Findbugs 1.3.9 (if running findbugs)
* ProtocolBuffer 2.5.0
* CMake 2.6]]></description><category></category></item><item><title><![CDATA[线程池调度原理图-注意]]></title><link>https://blog.youkuaiyun.com/vrtica/article/details/134827011</link><guid>https://blog.youkuaiyun.com/vrtica/article/details/134827011</guid><author>vrtica</author><pubDate>Wed, 06 Dec 2023 11:23:47 +0800</pubDate><description><![CDATA[线程池 参数设置]]></description><category></category></item><item><title><![CDATA[OpcEnum不能设置交互式用户问题]]></title><link>https://blog.youkuaiyun.com/vrtica/article/details/129840904</link><guid>https://blog.youkuaiyun.com/vrtica/article/details/129840904</guid><author>vrtica</author><pubDate>Wed, 06 Dec 2023 11:13:57 +0800</pubDate><description><![CDATA[版权声明：本文为博主原创文章，遵循。文章知识点与官方知识档案匹配，可进一步学习相关知识。于 2021-03-24 17:37:20 发布。版权协议，转载请附上原文出处链接和本声明。2.网上说的原因是opcenum没有注册。]]></description><category></category></item><item><title><![CDATA[Centos 在线安装 谷歌浏览器]]></title><link>https://blog.youkuaiyun.com/vrtica/article/details/130247398</link><guid>https://blog.youkuaiyun.com/vrtica/article/details/130247398</guid><author>vrtica</author><pubDate>Wed, 19 Apr 2023 16:52:50 +0800</pubDate><description><![CDATA[Centos在线安装谷歌浏览器，并在桌面打开]]></description><category></category></item><item><title><![CDATA[Mac 远程连接SSH Host key verification failed解决方法]]></title><link>https://blog.youkuaiyun.com/vrtica/article/details/129427296</link><guid>https://blog.youkuaiyun.com/vrtica/article/details/129427296</guid><author>vrtica</author><pubDate>Thu, 09 Mar 2023 17:36:16 +0800</pubDate><description><![CDATA[Mac远程连接SSH Host key verification failed解决方法]]></description><category></category></item><item><title><![CDATA[【转载】IEC104规约调试]]></title><link>https://blog.youkuaiyun.com/vrtica/article/details/129424614</link><guid>https://blog.youkuaiyun.com/vrtica/article/details/129424614</guid><author>vrtica</author><pubDate>Thu, 09 Mar 2023 15:57:23 +0800</pubDate><description><![CDATA[IEC104规约调试]]></description><category></category></item><item><title><![CDATA[iostat命令说明]]></title><link>https://blog.youkuaiyun.com/vrtica/article/details/128013819</link><guid>https://blog.youkuaiyun.com/vrtica/article/details/128013819</guid><author>vrtica</author><pubDate>Thu, 24 Nov 2022 10:49:13 +0800</pubDate><description><![CDATA[iostat 命令]]></description><category></category></item><item><title><![CDATA[mysql explain]]></title><link>https://blog.youkuaiyun.com/vrtica/article/details/122045682</link><guid>https://blog.youkuaiyun.com/vrtica/article/details/122045682</guid><author>vrtica</author><pubDate>Mon, 20 Dec 2021 17:08:56 +0800</pubDate><description><![CDATA[MySQL Explain详解
在日常工作中，我们会有时会开慢查询去记录一些执行时间比较久的SQL语句，找出这些SQL语句并不意味着完事了，些时我们常常用到explain这个命令来查看一个这些SQL语句的执行计划，查看该SQL语句有没有使用上了索引，有没有做全表扫描，这都可以通过explain命令来查看。所以我们深入了解MySQL的基于开销的优化器，还可以获得很多可能被优化器考虑到的访问策略的细节，以及当运行SQL语句时哪种策略预计会被优化器采用。
– 实际SQL，查找用户名为Jefabc的员工
selec]]></description><category></category></item><item><title><![CDATA[Mac 下 配置 各软件运行环境多版本管理 node多版本管理 java jdk多版本 python多版本]]></title><link>https://blog.youkuaiyun.com/vrtica/article/details/121931686</link><guid>https://blog.youkuaiyun.com/vrtica/article/details/121931686</guid><author>vrtica</author><pubDate>Tue, 14 Dec 2021 17:23:36 +0800</pubDate><description><![CDATA[mac 环境变量 多版本配置]]></description><category></category></item><item><title><![CDATA[mac下IDEA设置自动清除 无用import类]]></title><link>https://blog.youkuaiyun.com/vrtica/article/details/121695195</link><guid>https://blog.youkuaiyun.com/vrtica/article/details/121695195</guid><author>vrtica</author><pubDate>Fri, 03 Dec 2021 11:38:11 +0800</pubDate><description><![CDATA[mac下IDEA设置自动清除无用import类]]></description><category></category></item><item><title><![CDATA[elasticsearch 索引创建 基本查询语句 分词设计建议]]></title><link>https://blog.youkuaiyun.com/vrtica/article/details/121608527</link><guid>https://blog.youkuaiyun.com/vrtica/article/details/121608527</guid><author>vrtica</author><pubDate>Mon, 29 Nov 2021 14:08:37 +0800</pubDate><description><![CDATA[elasticsearch 索引创建
put data_index
{
    "mappings":{
    "data_index":{
        "properties": {
            "docId": {
              "type": "text"
            },
            "taskId": {
              "type": "text",
              "fielddata" : true
      ]]></description><category></category></item><item><title><![CDATA[Java中的多线程]]></title><link>https://blog.youkuaiyun.com/vrtica/article/details/74529245</link><guid>https://blog.youkuaiyun.com/vrtica/article/details/74529245</guid><author>vrtica</author><pubDate>Thu, 06 Jul 2017 10:57:45 +0800</pubDate><description><![CDATA[如果对什么是线程、什么是进程仍存有疑惑，请先Google之，因为这两个概念不在本文的范围之内。

用多线程只有一个目的，那就是更好的利用cpu的资源，因为所有的多线程代码都可以用单线程来实现。说这个话其实只有一半对，因为反应“多角色”的程序代码，最起码每个角色要给他一个线程吧，否则连实际场景都无法模拟，当然也没法说能用单线程来实现：比如最常见的“生产者，消费者模型”。

很多人都对其中的一]]></description><category></category></item><item><title><![CDATA[Java - 集合框架完全解析]]></title><link>https://blog.youkuaiyun.com/vrtica/article/details/73558382</link><guid>https://blog.youkuaiyun.com/vrtica/article/details/73558382</guid><author>vrtica</author><pubDate>Thu, 22 Jun 2017 09:32:40 +0800</pubDate><description><![CDATA[数据结构是以某种形式将数据组织在一起的集合，它不仅存储数据，还支持访问和处理数据的操作。Java提供了几个能有效地组织和操作数据的数据结构，这些数据结构通常称为Java集合框架。在平常的学习开发中，灵活熟练地使用这些集合框架，可以很明显地提高我们的开发效率，当然仅仅会用还是不够的，理解其中的设计思想与原理才能更好地提高我们的开发水平。下面是自己对Java集合框架方面的学习总结。
一、概述
二、C]]></description><category></category></item><item><title><![CDATA[Spring 相关资源]]></title><link>https://blog.youkuaiyun.com/vrtica/article/details/51499660</link><guid>https://blog.youkuaiyun.com/vrtica/article/details/51499660</guid><author>vrtica</author><pubDate>Wed, 25 May 2016 16:41:34 +0800</pubDate><description><![CDATA[spring
 framework 各版本源码下载地址

https://github.com/spring-projects/spring-framework/tags]]></description><category></category></item><item><title><![CDATA[学习小记  bootstrap datetimepicker]]></title><link>https://blog.youkuaiyun.com/vrtica/article/details/51442513</link><guid>https://blog.youkuaiyun.com/vrtica/article/details/51442513</guid><author>vrtica</author><pubDate>Wed, 18 May 2016 11:20:02 +0800</pubDate><description><![CDATA[时间标签：


datetimepicker：

1、时间控件默认显示中文：
var dates = $.fn.datepicker.dates = {

....,
 cn: {
      days: ["周日", "周一", "周二", "周三", "周四", "周五", "周六", "周日"],
      daysShort: ["日", "一", "二", "三"]]></description><category></category></item></channel></rss>