How are those drives partitioned? Is it possible that the directories pointed to by the dfs.datanode.data.dir property in hdfs-site.xml reside on partitions that are sized to only 100 GB? Running commands like df would be a good way to check this at the OS level, independently of Hadoop.
--Chris Nauroth From: MBA <[email protected]<mailto:[email protected]>> Reply-To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Date: Tuesday, November 3, 2015 at 11:16 AM To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Subject: Re: hadoop not using whole disk for HDFS Yeah. It has the current value of 1073741824 which is like 1.07 gig. B. From: Chris Nauroth<mailto:[email protected]> Sent: Tuesday, November 03, 2015 11:57 AM To: [email protected]<mailto:[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]<mailto:[email protected]>> Reply-To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Date: Tuesday, November 3, 2015 at 10:51 AM To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[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.
