Yeah. It has the current value of 1073741824 which is like 1.07 gig.

B.
From: Chris Nauroth 
Sent: Tuesday, November 03, 2015 11:57 AM
To: [email protected] 
Subject: Re: hadoop not using whole disk for HDFS

Hi Bob,

Does the hdfs-site.xml configuration file contain the property 
dfs.datanode.du.reserved?  If this is defined, then the DataNode intentionally 
will not use this space for storage of replicas.

<property>
  <name>dfs.datanode.du.reserved</name>
  <value>0</value>
  <description>Reserved space in bytes per volume. Always leave this much space 
free for non dfs use.
  </description>
</property>

--Chris Nauroth

From: MBA <[email protected]>
Reply-To: "[email protected]" <[email protected]>
Date: Tuesday, November 3, 2015 at 10:51 AM
To: "[email protected]" <[email protected]>
Subject: hadoop not using whole disk for HDFS


I’ve got the Hortonworks distro running on a three node cluster. For some 
reason the disk available for HDFS is MUCH less than the total disk space. Both 
of my data nodes have 3TB hard drives. Only 100GB of that is being used for 
HDFS. Is it possible that I have a setting wrong somewhere? 
B.

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