Hadoop笔记

给目录授权
sudo -u hdfs hadoop fs -chmod -R 777 /user/

CDH4 maven仓库
http://www.cloudera.com/content/cloudera-content/cloudera-docs/CDH4/latest/CDH-Version-and-Packaging-Information/cdhvd_topic_8.html#concept_mht_1wh_fn_unique_3

maven打包

mvn package

CDH4.6 hadoop相关程序下载
http://www.cloudera.com/content/cloudera-content/cloudera-docs/CDH4/4.6.0/CDH-Version-and-Packaging-Information/cdhvd_topic_3.html

CDH4编写MR程序
http://blog.cloudera.com/blog/2013/02/how-to-run-a-mapreduce-job-in-cdh4-using-advanced-features/

异常
http://blog.csdn.net/larrylgq/article/details/7960582