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Molisa
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使用Cloudera Manager部署安装的CDH和Impala,Hive中新增加的表,impala中查询不到,其原因是/etc/impala/conf下面没有hadoop和hive相关的配置文件: 将hadooop-core.xml,hdfs-site.xml,hive-site.xml拷贝到conf下,重启服务即可。
使用Pentaho Report Designer要使数据同步,可手动选择Data菜单选择Clear Cache Data,然后刷新报表 不使用缓存且使发布到Bi Server中的报表也能与数据库中的数据同步 在右侧的Structure下,选择master report 将Atrributes中的data-cache(query)属性设置为false
1. vim /etc/selinux to disable the selinux 2. chkconfig iptables off 3. vim /etc/sysconfig/network    NETWORK=yes    HOSTNAME=n0.example.com    GATEWAY=192.168.123.2 4.vim ifcfg-eth0    DEVICE=eth0    BOOTPROTO=static    IPADDR=192.18.XXXX    NETMASK=255.255.255.0 5. vim /etc/resolve.cnf nameserver ...

Cloudera Hue Issues

在使用Cloudera Hue时遇到一问题: 1. 使用Sqoop导入功能时,由于配置错误,使得“保存运行”后Job并不能正常提交,且界面上没有相关提示: 使用Hue的Sqoop shell -》 start job --jid * 提交会出现一些错误提示 然后再去/var/log/sqoop/里面 ...

java类的生命周期

    博客分类:
  • Java
http://www.cnblogs.com/rongxh7/archive/2010/04/11/1709334.html
1. Build the product concept. Make it better and better 2. Cheer up everyone to create a great product as similar as possible     as the perfect product concept has build in everyone's mind

A joke about C++

    博客分类:
  • Java
Of course, while it is true that the ++ operator gives the C++ language its name, it also led to the first joke about the language. C++ haters point out that even the name of the language contains a bug: “After all, it should really be called ++C, because we only want to use a language after it has b ...
http://stblog.baidu-tech.com/?p=310

源码分析

Mapreduce:http://langyu.iteye.com/blog/909170 HDFS:http://langyu.iteye.com/blog/909170 Zookeeper: http://blog.csdn.net/xhh198781/article/category/841157 HBase: http://blog.csdn.net/column/details/hbase.html

Collection

    博客分类:
  • Java
http://blog.sina.com.cn/s/blog_4e90b73e01008qfn.html

Hascode, equals and ==

    博客分类:
  • Java
http://blog.sina.com.cn/s/blog_4e90b73e01008pzz.html
有许多人相信最好的想法因它本身的优秀而胜出,这种精英式看法没有看到其它可能:交易、领导力和公司政治   我们可能都遇到过这样的人,他(她)相信客观、可衡量的事实,认为最好的东西会因它本身的优秀而胜出,通 ...

启动脚本分析

http://blog.csdn.net/wanweiaiaqiang/article/details/7092293 http://weixiaolu.iteye.com/blog/1397519 http://www.linuxidc.com/Linux/2012-03/56929.htm http://www.hadoopor.com/thread-1709-1-1.html

JVM Memory Structure

    博客分类:
  • JVM
http://www.yourkit.com/docs/kb/sizes.jsp
Google and IBM Announce University Initiative to Address Internet-Scale Computing Challenges http://www.google.com/intl/en/press/pressrel/20071008_ibm_univ.html Google Code Universityhttp://code.google.com/intl/zh-CN/edu/parallel/
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