ubuntu@onlinelabs-15ae7c187615497fa4d5dc9f62332bae:~$ cat /etc/hadoop/conf/core-site.xml
<?xml version="1.0"?>
<configuration>
  <property>
    <name>hadoop.tmp.dir</name>
    <value>/usr/local/hadoop/data/cache/${user.name}</value>
  </property>
  <property>
    <name>io.file.buffer.size</name>
    <value>4096</value>
  </property>
  <property>
    <name>fs.default.name</name>
    <value>hdfs://10.1.8.95:9000</value>
  </property>
</configuration>