<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[Jackson_Father的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/Jackson_Father</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; Jackson_Father]]></copyright><item><title><![CDATA[Linux vim命令]]></title><link>https://blog.youkuaiyun.com/Jackson_Father/article/details/133894044</link><guid>https://blog.youkuaiyun.com/Jackson_Father/article/details/133894044</guid><author>Jackson_Father</author><pubDate>Wed, 18 Oct 2023 09:19:04 +0800</pubDate><description><![CDATA[vim 命令]]></description><category></category></item><item><title><![CDATA[常用遥感数据集]]></title><link>https://blog.youkuaiyun.com/Jackson_Father/article/details/131310923</link><guid>https://blog.youkuaiyun.com/Jackson_Father/article/details/131310923</guid><author>Jackson_Father</author><pubDate>Tue, 20 Jun 2023 17:07:53 +0800</pubDate><description><![CDATA[图像像素大小为256*256，总包含21类场景图像，每一类有100张，共2100张。下载地址：http://weegee.vision.ucmerced.edu/datasets/landuse.html。]]></description><category></category></item><item><title><![CDATA[Mysql基础操作]]></title><link>https://blog.youkuaiyun.com/Jackson_Father/article/details/128864415</link><guid>https://blog.youkuaiyun.com/Jackson_Father/article/details/128864415</guid><author>Jackson_Father</author><pubDate>Fri, 03 Feb 2023 12:57:44 +0800</pubDate><description><![CDATA[【代码】Mysql基础操作。]]></description><category></category></item><item><title><![CDATA[JAVA注解和反射]]></title><link>https://blog.youkuaiyun.com/Jackson_Father/article/details/128803819</link><guid>https://blog.youkuaiyun.com/Jackson_Father/article/details/128803819</guid><author>Jackson_Father</author><pubDate>Mon, 30 Jan 2023 16:53:26 +0800</pubDate><description><![CDATA[使用@interface自定义注解，自动继承java.lang.anntation.Annotation接口格式public @interface 注解名{ 内容 }内容中方法即为注解的参数，格式**参数类型 参数名()**]]></description><category></category></item><item><title><![CDATA[beeline登录hive]]></title><link>https://blog.youkuaiyun.com/Jackson_Father/article/details/123099045</link><guid>https://blog.youkuaiyun.com/Jackson_Father/article/details/123099045</guid><author>Jackson_Father</author><pubDate>Wed, 23 Feb 2022 20:51:30 +0800</pubDate><description><![CDATA[beeline -u jdbc:hive2://hadoop102:10000 -n jackson

]]></description><category></category></item><item><title><![CDATA[hadoop核心文件配置]]></title><link>https://blog.youkuaiyun.com/Jackson_Father/article/details/122475360</link><guid>https://blog.youkuaiyun.com/Jackson_Father/article/details/122475360</guid><author>Jackson_Father</author><pubDate>Fri, 14 Jan 2022 09:14:10 +0800</pubDate><description><![CDATA[（1）核心配置文件
配置core-site.xml
]]></description><category></category></item><item><title><![CDATA[HADOOP集群时间同步配置]]></title><link>https://blog.youkuaiyun.com/Jackson_Father/article/details/122474775</link><guid>https://blog.youkuaiyun.com/Jackson_Father/article/details/122474775</guid><author>Jackson_Father</author><pubDate>Thu, 13 Jan 2022 15:34:45 +0800</pubDate><description><![CDATA[集群时间同不，如果联网就不建议同步]]></description><category></category></item><item><title><![CDATA[集群hdfs启动]]></title><link>https://blog.youkuaiyun.com/Jackson_Father/article/details/122474254</link><guid>https://blog.youkuaiyun.com/Jackson_Father/article/details/122474254</guid><author>Jackson_Father</author><pubDate>Thu, 13 Jan 2022 15:06:04 +0800</pubDate><description><![CDATA[单点启动 节点和 整体启动]]></description><category></category></item><item><title><![CDATA[hadoop日志聚集功能配置]]></title><link>https://blog.youkuaiyun.com/Jackson_Father/article/details/122474083</link><guid>https://blog.youkuaiyun.com/Jackson_Father/article/details/122474083</guid><author>Jackson_Father</author><pubDate>Thu, 13 Jan 2022 15:01:59 +0800</pubDate><description><![CDATA[注意：开启日志聚集功能，需要重新启动NodeManager 、ResourceManager和HistoryServer。
配置yarn-site.xml
增加配置
&lt;!-- 开启日志聚集功能 --&gt;
&lt;property&gt;
    &lt;name&gt;yarn.log-aggregation-enable&lt;/name&gt;
    &lt;value&gt;true&lt;/value&gt;
&lt;/property&gt;
&lt;!-- 设置日志聚集服务器地址 -]]></description><category></category></item><item><title><![CDATA[配置历史服务器]]></title><link>https://blog.youkuaiyun.com/Jackson_Father/article/details/122471263</link><guid>https://blog.youkuaiyun.com/Jackson_Father/article/details/122471263</guid><author>Jackson_Father</author><pubDate>Thu, 13 Jan 2022 12:34:31 +0800</pubDate><description><![CDATA[目的：查看历史运行情况

mapred-site.xml

&lt;!-- 历史服务端地址 --&gt;
&lt;property&gt;
  &lt;name&gt;mapreduce.jobhistory.address&lt;/name&gt;
  &lt;value&gt;hadoop102:10020&lt;/value&gt;
  &lt;description&gt;MapReduce JobHistory Server IPC host:port&lt;/description&gt;
&l]]></description><category></category></item><item><title><![CDATA[hadoop笔记]]></title><link>https://blog.youkuaiyun.com/Jackson_Father/article/details/122471214</link><guid>https://blog.youkuaiyun.com/Jackson_Father/article/details/122471214</guid><author>Jackson_Father</author><pubDate>Thu, 13 Jan 2022 12:23:35 +0800</pubDate><description><![CDATA[一、Hadoop入门
1、常用端口号
hadoop3.x
HDFS NameNode 内部通常端口：8020/9000/9820
HDFS NameNode 对用户的查询端口：9870
Yarn查看任务运行情况的：8088
历史服务器：19888
hadoop2.x
HDFS NameNode 内部通常端口：8020/9000
HDFS NameNode 对用户的查询端口：50070
Yarn查看任务运行情况的：8088
历史服务器：19888
2、常用的配置文件
3.x core-site.xml  hd]]></description><category></category></item><item><title><![CDATA[hadoop集群异常奔溃处理方式]]></title><link>https://blog.youkuaiyun.com/Jackson_Father/article/details/122471186</link><guid>https://blog.youkuaiyun.com/Jackson_Father/article/details/122471186</guid><author>Jackson_Father</author><pubDate>Thu, 13 Jan 2022 12:22:24 +0800</pubDate><description><![CDATA[hadoop集群异常奔溃处理
1.先停止所有进程
	stop-dfs.sh


删除所有节点的 data、logs目录

	   rm -rf data
		rm -rf logs


重新格式化

hadoop fs namenode -format

启动集群
 start-dfs.sh


]]></description><category></category></item><item><title><![CDATA[hadoop2.7*]]></title><link>https://blog.youkuaiyun.com/Jackson_Father/article/details/122470984</link><guid>https://blog.youkuaiyun.com/Jackson_Father/article/details/122470984</guid><author>Jackson_Father</author><pubDate>Thu, 13 Jan 2022 12:01:43 +0800</pubDate><description><![CDATA[hadoop2.7端口参考]]></description><category></category></item><item><title><![CDATA[大数据集群安装教程及文件配置]]></title><link>https://blog.youkuaiyun.com/Jackson_Father/article/details/122470877</link><guid>https://blog.youkuaiyun.com/Jackson_Father/article/details/122470877</guid><author>Jackson_Father</author><pubDate>Thu, 13 Jan 2022 11:57:12 +0800</pubDate><description><![CDATA[hdfs集群搭建]]></description><category></category></item><item><title><![CDATA[hadoop3.X 和 Hadoop 2.X的web端口号访问]]></title><link>https://blog.youkuaiyun.com/Jackson_Father/article/details/122470853</link><guid>https://blog.youkuaiyun.com/Jackson_Father/article/details/122470853</guid><author>Jackson_Father</author><pubDate>Thu, 13 Jan 2022 11:53:53 +0800</pubDate><description><![CDATA[web端查看hdfs

HDFS===NameNode 9870
YARN===ResourceManager 8088


]]></description><category></category></item><item><title><![CDATA[hadoop3.1.3配置文件]]></title><link>https://blog.youkuaiyun.com/Jackson_Father/article/details/122469157</link><guid>https://blog.youkuaiyun.com/Jackson_Father/article/details/122469157</guid><author>Jackson_Father</author><pubDate>Thu, 13 Jan 2022 11:02:57 +0800</pubDate><description><![CDATA[1、core-site.xml
&lt;configuration&gt;
&lt;!-- 指定HDFS中NameNode的地址 --&gt;
&lt;property&gt;
        &lt;name&gt;fs.defaultFS&lt;/name&gt;
        &lt;value&gt;hdfs://hadoop102:8020&lt;/value&gt;
&lt;/property&gt;

&lt;!-- 指定Hadoop运行时产生文件的存储目录 --&gt;
&lt;prope]]></description><category></category></item><item><title><![CDATA[如何使用两个变量实现数字互换]]></title><link>https://blog.youkuaiyun.com/Jackson_Father/article/details/117320782</link><guid>https://blog.youkuaiyun.com/Jackson_Father/article/details/117320782</guid><author>Jackson_Father</author><pubDate>Thu, 27 May 2021 09:42:40 +0800</pubDate><description><![CDATA[如何使用两个变量实现数字互换
#include&lt;stdio.h&gt;
int main()
{
	int a,b;
	a=5,b=6;
	printf("互换前a= %d, b= %d",a,b);
	b = b -a;
	a = b + a;
	b = a -b;
	printf("互换后a= %d, b= %d",a,b);
return 0;
}

经过如此换算即可实现两个变量的互换。

...]]></description><category></category></item></channel></rss>