How-to: deploy hadoop client with some special user based on acl enbaled cluster

This is to deploy a hadoop client with some user besides hadoop admin user to connect an acl(configure user access permission ) enabled hadoop.

At client node:

1. Useradd client user. Here client user will be "chenfangfang". Hadoop cluster admin user is "hadoop".
   
2. Edit client node /etc/hosts, to make sure this client could access existing hadoop cluster.
3. Copy hadoop package to client node as user "chenfangfang".
   
4. Configure environment variables:
   HADOOP_COMMON_HOME="/home/chenfangfang/hadoop"
   HADOOP_CONF_DIR="/home/chenfangfang/hadoop/etc/hadoop"
   HADOOP_HDFS_HOME="/home/chenfangfang/hadoop"
   HADOOP_HOME="/home/chenfangfang/hadoop"
   HADOOP_MAPRED_HOME="/home/chenfangfang/hadoop"
   

At hadoop cluster node:

1. Create user directory and grant:
   hdfs mkdir /user/chenfangfang
   hdfs dfs -setfacl -m user:chenfangfang:rwx /user/chenfangfang
   hdfs dfs -setfacl -m group:chenfangfang:rwx /user/chenfangfang  
   hdfs dfs -getfacl /user/chenfangfang
2. Grant log dir to users, this is to make sure client could launch jobs
   hdfs dfs -setfacl -m group:chenfangfang:rwx /tmp
   hdfs dfs -setfacl -m user:chenfangfang:rwx /tmp
   hdfs dfs -setfacl -m group:chenfangfang:rwx /tmp/hadoop-yarn
   hdfs dfs -setfacl -m user:chenfangfang:rwx /tmp/hadoop-yarn
   hdfs dfs -setfacl -m group:chenfangfang:rwx /tmp/hadoop-yarn/staging
   hdfs dfs -setfacl -m user:chenfangfang:rwx /tmp/hadoop-yarn/staging