Database Reference
In-Depth Information
Under the
Summary
section, the first parameter is related to the security config-
uration of the cluster. If Kerberos (the authorization and authentication system
used in Hadoop) is configured, the parameter will show as
Security is on
. If Ker-
beros is not configured, the parameter will show as
Security is off
.
The next parameter displays information related to files and blocks in the cluster.
Along with this information, the heap and non-heap memory utilization is also
displayed. The other parameters displayed in the
Summary
section are as fol-
lows:
◦
Configured Capacity
: This displays the total capacity (storage space) of
HDFS.
◦
DFS Used
: This displays the total space used in HDFS.
◦
Non DFS Used
: This displays the amount of space used by other files
that are not part of HDFS. This is the space used by the operating system
and other files.
◦
DFS Remaining
: This displays the total space remaining in HDFS.
◦
DFS Used%
: This displays the total HDFS space utilization shown as
percentage.
