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Superior Data Analytics is the antidote to Business Failure

Posts Tagged ‘Big Data Space Issue’

HDFS Free Space Command

Posted by sranka on March 17, 2014

Hi All

With increasing data  volume , in HDFS space could be continued challenge. While running into some space related issue, following command came very handy, hence thought of sharing with extended virtual community.

At times it gets challenging to know how much of actual space a directory or a file is using.  Having a command which can give you human readable format of size is always useful.  Below command shows how to get actual human readable file size on HDFS

hdfs dfs -du -h /

241.3 G  /app
9.8 G    /benchmarks
309.6 G  /hbase
0        /system
59.6 G   /tmp
20.0 G   /user
[sranka@devHadoopSrvr06 ~]$

 

hadoop dfsadmin -report

Post running the command, below is the result, it takes all the nodes in the cluster and gives the detail break-up based on the space availability and spaces used.


Configured Capacity: 13965170479105 (12.70 TB)
Present Capacity: 4208469598208 (3.83 TB)
DFS Remaining: 2120881930240 (1.93 TB)
DFS Used: 2087587667968 (1.90 TB)
DFS Used%: 49.60%
Under replicated blocks: 0
Blocks with corrupt replicas: 0
Missing blocks: 0

-------------------------------------------------
Datanodes available: 5 (5 total, 0 dead)

Live datanodes:
Name: 160.33.148.202:50010 (devHadoopSrvr08.ps.am.mycompany.com)
Hostname: devHadoopSrvr08.ps.am.mycompany.com
Rack: /default
Decommission Status : Normal
Configured Capacity: 2793034095821 (2.54 TB)
DFS Used: 381953257472 (355.72 GB)
Non DFS Used: 1986904386765 (1.81 TB)
DFS Remaining: 424176451584 (395.05 GB)
DFS Used%: 13.68%
DFS Remaining%: 15.19%
Last contact: Mon Mar 17 12:43:05 PDT 2014

Name: 160.33.148.204:50010 (devHadoopSrvr10.ps.am.mycompany.com)
Hostname: devHadoopSrvr10.ps.am.mycompany.com
Rack: /default
Decommission Status : Normal
Configured Capacity: 2793034095821 (2.54 TB)
DFS Used: 402465816576 (374.83 GB)
Non DFS Used: 1966391827661 (1.79 TB)
DFS Remaining: 424176451584 (395.05 GB)
DFS Used%: 14.41%
DFS Remaining%: 15.19%
Last contact: Mon Mar 17 12:43:05 PDT 2014

Name: 160.33.148.203:50010 (devHadoopSrvr09.ps.am.mycompany.com)
Hostname: devHadoopSrvr09.ps.am.mycompany.com
Rack: /default
Decommission Status : Normal
Configured Capacity: 2793034095821 (2.54 TB)
DFS Used: 391020421120 (364.17 GB)
Non DFS Used: 1977837223117 (1.80 TB)
DFS Remaining: 424176451584 (395.05 GB)
DFS Used%: 14.00%
DFS Remaining%: 15.19%
Last contact: Mon Mar 17 12:43:06 PDT 2014

Name: 160.33.148.201:50010 (devHadoopSrvr07.ps.am.mycompany.com)
Hostname: devHadoopSrvr07.ps.am.mycompany.com
Rack: /default
Decommission Status : Normal
Configured Capacity: 2793034095821 (2.54 TB)
DFS Used: 389182472192 (362.45 GB)
Non DFS Used: 1979675172045 (1.80 TB)
DFS Remaining: 424176451584 (395.05 GB)
DFS Used%: 13.93%
DFS Remaining%: 15.19%
Last contact: Mon Mar 17 12:43:04 PDT 2014

Name: 160.33.148.59:50010 (devHadoopSrvr06.ps.am.mycompany.com)
Hostname: devHadoopSrvr06.ps.am.mycompany.com
Rack: /default
Decommission Status : Normal
Configured Capacity: 2793034095821 (2.54 TB)
DFS Used: 522965700608 (487.05 GB)
Non DFS Used: 1845892140237 (1.68 TB)
DFS Remaining: 424176254976 (395.04 GB)
DFS Used%: 18.72%
DFS Remaining%: 15.19%
Last contact: Mon Mar 17 12:43:05 PDT 2014

Hope This Helps

Sunil S Ranka

“Superior BI is the antidote to Business Failure”

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