dev/testenv/_conf/hdfs-site.xml

<?xml version="1.0"?>
<configuration>
  <property>
    <name>dfs.replication</name>
    <value>1</value>
  </property>
  <property>
      <name>dfs.namenode.name.dir</name>
      <value>file:///Volumes/Workspace/bigdata-workspace/_data/dfs-name</value>
  </property>
  <property>
      <name>dfs.datanode.data.dir</name>
      <value>file:///Volumes/Workspace/bigdata-workspace/_data/dfs-data</value>
  </property>
</configuration>