Java sample code: http://dl.huangshiyang.com/hadoopUtilTools.zip import java.io.IOException; import java.util.*; import org.apache.hadoop.fs.Path; import org.apache.hadoop.conf.*; import org.apache.hadoop.io.*; import... Read More | Share it now!
Monthly Archives: January 2016
How to install a MapR(5.1, 5.0, 4.1) cluster on Centos VM
Operating System Support Matrix This matrix shows the operating systems and versions supported by each MapR release. MapR Version OS Version MapR 5.2.0 MapR 5.1.0 MapR 5.0.0 MapR 4.1.0 MapR 4.0.2 MapR 4.0.1 MapR 3.1.x MapR... Read More | Share it now!
Aggregation is not enabled. Try the nodemanager at IP:HOST
Question: Aggregation service start hadoop 2.2.0, I want to view Tracking UI,so I visit http://172.11.12.6:8088/cluster,then I click History of Completed Job,such as follows: MapReduce Job job_1392601388579_0001 Attempt Number Start Time Node Logs 1... Read More | Share it now!
Set up DgSecure after installing
ORANGE WORDS need to be changed on your OWN!!!!! Common setting: 1 set up host name of local machine and clusters: $ vi etc/hosts 192.168.5.1 cdh1.cluster 192.168.5.2 cdh2.cluster 192.168.5.3 cdh3.cluster 192.168.5.123 dgctrl localhost 2 copy... Read More | Share it now!
OPT申请出现的各种问题总结，希望以后办OPT的人少走弯路 作者 : 徐凡
作者 : 徐凡 因为我申请OPT的经历比较波折，历时五个月收到EAD卡(收到卡时已经开启了一个半月了！但也不想再argue了，收到就好。)，所以也总结了一些办 OPT经验。 5月10号寄到USCIS –... Read More | Share it now!
水浒传 -108单好汉绰号大全
摘要：洋洋百万言的《水浒传》，是我国第一部古典长篇白话小说，是享誉世界公认的中国古典四大名著之一，这部巨著光出场人物就有七百二十五人之多！水浒一百单八将，各有一个或数个绰号，施耐庵先生往往只用几个最精粹的字眼，便将他们的外貌、性格特点或轶事、个人遭遇、特长爱好等某一方面的概况表现出来。这些绰号大体可分为六大类：动物类、性格类、名人类、形象类、特长类、鬼神类。来聊聊一百单八将绰号的由来与内涵。第一类：动物 水浒英雄传 水浒英雄传 洋洋百万言的《水浒传》，是我国第一部古典长篇白话小说，是享誉世界公认的中国古典四大名著之一，这部巨著光出场人物就有七百二十五人之多！水浒一百单八将，各有一个或数个绰号，施耐庵先生往往只用几个最精粹的字眼，便将他们的外貌、性格特点或轶事、个人遭遇、特长爱好等某一方面的概况表现出来。这些绰号大体可分为六大类：动物类、性格类、名人类、形象类、特长类、鬼神类。来聊聊一百单八将绰号的由来与内涵。 第一类：动物类... Read More | Share it now!
Linux下MySQL忘记root用户密码
今天在接收一台MySQL服务器的时候发现忘记MySQL的root用户的密码，查找资料发了各种文档里面也没有root用户密码，因此需要修改root用户密码。 首先确认服务器出于安全的状态，也就是没有人能够任意地连接MySQL数据库。因为在重新设置MySQL的root密码的期间，MySQL数据库完全出于没有密码保护的状态下，其他的用户也可以任意地登录和修改MySQL的信息。最安全的状态是到服务器的Console上面操作，并且拔掉网线。 1、修改MySQL的登录设置： 在的段中加上的skip-grant-tables #... Read More | Share it now!
How to configure Kerberos on HDP and integrate with Active Directory
http://zh.hortonworks.com/blog/enabling-kerberos-hdp-active-directory-integration/ Hadoop is a business-critical data platform at many of the world’s largest enterprises. These corporations require a layered security model focusing on four aspects of... Read More | Share it now!
how to change postgresql listening port
Just change the setting in the file postgresql.conf (can be found in the data directory): …./Postgres/9.1/data/postgresql.conf port = 5433 # (change requires restart) Remote access can be given by changing pg_hba.conf, just add the... Read More | Share it now!
Download the MapR Converged Data Platform for Free!
The MapR Converged Data Platform is available in two editions – the Converged Community Edition, for free, unlimited production use, and the Converged Enterprise Edition, for critical deployments requiring business continuity. Click here... Read More | Share it now!