<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[qq_44273296的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/qq_44273296</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; qq_44273296]]></copyright><item><title><![CDATA[根据员工序号给指定员工提薪]]></title><link>https://blog.youkuaiyun.com/qq_44273296/article/details/122189175</link><guid>https://blog.youkuaiyun.com/qq_44273296/article/details/122189175</guid><author>qq_44273296</author><pubDate>Tue, 28 Dec 2021 11:30:50 +0800</pubDate><description><![CDATA[/*输入本部门5位员工的薪资，并根据用户输入的序号为指定员工进行提薪。

若用户输入序号出现越界，则提示错误。
要求：薪资的涨幅不能超过原薪资的20%，若涨幅超过20%，则按照原薪资的20%进行提薪。

思路：
1:输入
2:数组[]    int[] salary;  【0-4】
3:  4 ===&gt; salary[3]
4:   0&lt;=num&lt;=4
5:temp=salary[i]*0.2
6:if(money&gt;temp)

 salay[i]=salary[i]+temp


]]></description><category></category></item><item><title><![CDATA[java基础–用方法来写简单计算器]]></title><link>https://blog.youkuaiyun.com/qq_44273296/article/details/121973920</link><guid>https://blog.youkuaiyun.com/qq_44273296/article/details/121973920</guid><author>qq_44273296</author><pubDate>Thu, 16 Dec 2021 14:33:29 +0800</pubDate><description><![CDATA[java基础–用方法来写简单计算器
简单计算器
package T9;
import java.util.Scanner;
public class Test {
	
	
	public int jia(int num1,int num2) {
		int sum;
		sum=num1+num2;
		return sum;
		
	}
	public void jian(int num1,int num2) {
		System.out.println(num1-num2);
	
	}
	public ]]></description><category></category></item><item><title><![CDATA[datanode启不起来，报错：org.apache.hadoop.hdfs.server.datanode.Datanode:Enk pool service for:Block pool ()Da]]></title><link>https://blog.youkuaiyun.com/qq_44273296/article/details/108059124</link><guid>https://blog.youkuaiyun.com/qq_44273296/article/details/108059124</guid><author>qq_44273296</author><pubDate>Mon, 17 Aug 2020 16:47:11 +0800</pubDate><description><![CDATA[datanode启不起来，报错：org.apache.hadoop.hdfs.server.datanode.Datanode:Enk pool service for:Block pool ()Datanode Uuid unassigned)…
百度了一下错误，这个问题一般是由于两次或两次以上的格式化NameNode造成的……
datanode和namenode不再默认路径，而是自己设置过的路径。根据设置的路径，进入datanode的dfs/datanode/data/dir的current目录，修改其]]></description><category></category></item><item><title><![CDATA[Hadoop集群安装配置]]></title><link>https://blog.youkuaiyun.com/qq_44273296/article/details/108020796</link><guid>https://blog.youkuaiyun.com/qq_44273296/article/details/108020796</guid><author>qq_44273296</author><pubDate>Sat, 15 Aug 2020 12:56:07 +0800</pubDate><description><![CDATA[hadoop集群安装配置
Title：  Hadoop集群安装配置
Author：liguangman
Email： 2990244047@qq.com
一：基础设置
创建用户：
useradd lgm -m

修改密码：
passwd lgm

进入创建好的用户：
su lgm

看此时的路径：

修改主机名：
Sudo vim /etc/hostname

把原机名改为master
e.g:

映射：
vim /etc/hosts


把安装包传进来：
1：从别的节点scp

2：从 xshell自带的]]></description><category></category></item><item><title><![CDATA[关闭hbase时报错，stopping hbasecat: /tmp/hbase-lgm-master.pid: No such a file。没有那个文件或目录]]></title><link>https://blog.youkuaiyun.com/qq_44273296/article/details/108020729</link><guid>https://blog.youkuaiyun.com/qq_44273296/article/details/108020729</guid><author>qq_44273296</author><pubDate>Sat, 15 Aug 2020 12:19:24 +0800</pubDate><description><![CDATA[关闭hbase时报错，stopping hbasecat: /tmp/hbase-lgm-master.pid: No such a file。没有那个文件或目录
解决方案：
修改hbase-env.sh 配置文件

自己设一个pids 目录，再在对应目录创一个pids,改一下权限
	chmod 777 pids


...]]></description><category></category></item><item><title><![CDATA[Reported time is too far out of sync with master. Time difference of 57422ms ＞ max allowed of 30000m]]></title><link>https://blog.youkuaiyun.com/qq_44273296/article/details/108020666</link><guid>https://blog.youkuaiyun.com/qq_44273296/article/details/108020666</guid><author>qq_44273296</author><pubDate>Sat, 15 Aug 2020 12:14:56 +0800</pubDate><description><![CDATA[在搭建hbase集群时，Hregion server启不起来，查看日志发现以下错误：
2020-08-11 17:34:04,137 FATAL [regionserver60020] regionserver.HRegionServer: ABORTING region server bionode1,60020,1508924043337: Unhandled: org.apache.hadoop.hbase.ClockOutOfSyncException: Server bionode1,60020,]]></description><category></category></item><item><title><![CDATA[kill -9 杀不掉的进程的解决方法]]></title><link>https://blog.youkuaiyun.com/qq_44273296/article/details/108015201</link><guid>https://blog.youkuaiyun.com/qq_44273296/article/details/108015201</guid><author>qq_44273296</author><pubDate>Sat, 15 Aug 2020 12:03:29 +0800</pubDate><description><![CDATA[kill -9 还杀不掉就是僵尸进程啦
我用的集群下有好多用户，别的用户起了Hmaster我这儿就起不起来，kill 啥的也关不掉。
找父进程
[root@westgis167 logs]# cat /proc/5636/status	


其中ppid就是父进程
再杀掉父进程就好啦


...]]></description><category></category></item><item><title><![CDATA[hive安装配置（单机版）]]></title><link>https://blog.youkuaiyun.com/qq_44273296/article/details/107991661</link><guid>https://blog.youkuaiyun.com/qq_44273296/article/details/107991661</guid><author>qq_44273296</author><pubDate>Thu, 13 Aug 2020 21:22:52 +0800</pubDate><description><![CDATA[hive安装配置
Title：  hive安装配置
Author：liguangman
Email： 2990244047@qq.com（qq邮箱一出现瞬间low到爆）
安装元数据服务(mysql)
rpm -qa | grep mariadb
rpm -e mariadb-libs-5.5.35-3.el7.x86_64 --nodeps

rpm -ivh mysql-community-common-5.7.18-1.el7.x86_64.rpm 
rpm -ivh mysql-community-l]]></description><category></category></item><item><title><![CDATA[hadoop单机版搭建最全教程，不会来问我]]></title><link>https://blog.youkuaiyun.com/qq_44273296/article/details/107946560</link><guid>https://blog.youkuaiyun.com/qq_44273296/article/details/107946560</guid><author>qq_44273296</author><pubDate>Tue, 11 Aug 2020 22:49:32 +0800</pubDate><description><![CDATA[hadoop单机版搭建
hadoop基础平台单击部署
author：lgm
EMAIL：2996244047@qq.com(qq邮箱一上来，瞬间low到起飞)
修改/etc/hosts
[root@westgis167~]# hostnamectl set-hostname hadoop
[root@westgis167~]# su -
[root@westgis167~]# vim  /etc/hosts
 10.103.104.167   westgis167
10.103.104.168  westg]]></description><category></category></item><item><title><![CDATA[mapreduce下的wordcount和terasort对比]]></title><link>https://blog.youkuaiyun.com/qq_44273296/article/details/97038803</link><guid>https://blog.youkuaiyun.com/qq_44273296/article/details/97038803</guid><author>qq_44273296</author><pubDate>Tue, 23 Jul 2019 22:13:34 +0800</pubDate><description><![CDATA[要求：
1，选取wordcount和sort两个程序，每个程序五个输入数据集
2，wordcount数据集(20M,100M,500M,1G,2G)
3，sort数据集(20M,100M,500M,1G,2G)
4，对每个程序分别对比程序执行时间
5，选几个重要的性能计数器(6个以上)，观察性能计数器的变化
6，画图表，总结分析
一、操作过程：
Wordcount操作
（1）使用dd命令产生5个文...]]></description><category></category></item><item><title><![CDATA[.java输出n行数字塔]]></title><link>https://blog.youkuaiyun.com/qq_44273296/article/details/88915570</link><guid>https://blog.youkuaiyun.com/qq_44273296/article/details/88915570</guid><author>qq_44273296</author><pubDate>Sat, 30 Mar 2019 17:18:30 +0800</pubDate><description><![CDATA[import java.util.*;
public class 输出n行数字塔 {
public static void main(String[] args)
{
Scanner sc =new Scanner(System.in);
System.out.println(“请输入一个数：”);
int n =sc.nextInt();
int x=1;
for(int i=1;i&lt;=n...]]></description><category></category></item><item><title><![CDATA[IAAS，PAAS，SAAS是什么]]></title><link>https://blog.youkuaiyun.com/qq_44273296/article/details/88915360</link><guid>https://blog.youkuaiyun.com/qq_44273296/article/details/88915360</guid><author>qq_44273296</author><pubDate>Sat, 30 Mar 2019 17:08:00 +0800</pubDate><description><![CDATA[IAAS（ Information as a service ） :基础平台服务(只是虚拟机+物理机，无软件)
PAAS（platform as a service） ：平台机服务（提供了软件但需要写程序 ）
SAAS（software as a service） ：软件机服务  （只需要使用就行）

...]]></description><category></category></item><item><title><![CDATA[日向雏田的Hadoop初学之Linux文件操作]]></title><link>https://blog.youkuaiyun.com/qq_44273296/article/details/88915073</link><guid>https://blog.youkuaiyun.com/qq_44273296/article/details/88915073</guid><author>qq_44273296</author><pubDate>Sat, 30 Mar 2019 16:54:43 +0800</pubDate><description><![CDATA[2019-3-3
（三）文件操作
1：cd 进入操作
2：创建文件和目录
mkdir /tmp/test01  //创建空文件夹
mkdir -p/data1/hadoop/hdfs/name   //递归创建文件夹
touch /tmp/test01/file.txt   //创建空文件夹
vi file.log  //创建空文件夹并进入编辑模式
echo&gt;file.txt  //创建fi...]]></description><category></category></item><item><title><![CDATA[元气少女赵本山和她的hadoop初学笔记打卡]]></title><link>https://blog.youkuaiyun.com/qq_44273296/article/details/87834354</link><guid>https://blog.youkuaiyun.com/qq_44273296/article/details/87834354</guid><author>qq_44273296</author><pubDate>Thu, 21 Feb 2019 00:06:11 +0800</pubDate><description><![CDATA[元气少女赵本山和她的hadoop初学笔记打卡
数据科学与大数据技术  下学期学Hadoop  提前复习一下Linux基本操作。新学期让我们不挂科。
（一）系统级别命令
1：查看当前Linux信息：
uname -a --显示系统及版本所有信息
uname -r 显示内核版本
uname -m 显示计算机是多少位系统
2：hostname:查看当前主机名
3：ifconfig eth0:查看网卡
4...]]></description><category></category></item></channel></rss>