title: DFS Used%: 100.00% Slave VMs down in Hadoop
body: <p>My slave VMs went down and I guess it's because DFS used is 100%. Can you please give a systematic approach as how to solve this problem? Is it a firewall problem? capacity problem or what could cause it and how can be fixed?</p>
  
  <pre><code>ubuntu@anmol-vm1-new:~$  hadoop dfsadmin -report
  DEPRECATED: Use of this script to execute hdfs command is deprecated.
  Instead use the hdfs command for it.
  
  15/12/13 22:25:49 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
  Configured Capacity: 845446217728 (787.38 GB)
  Present Capacity: 797579996211 (742.80 GB)
  DFS Remaining: 794296401920 (739.75 GB)
  DFS Used: 3283594291 (3.06 GB)
  DFS Used%: 0.41%
  Under replicated blocks: 1564
  Blocks with corrupt replicas: 0
  Missing blocks: 0
  
  -------------------------------------------------
  Datanodes available: 2 (4 total, 2 dead)
  
  Live datanodes:
  Name: 10.0.1.190:50010 (anmol-vm1-new)
  Hostname: anmol-vm1-new
  Decommission Status : Normal
  Configured Capacity: 422723108864 (393.69 GB)
  DFS Used: 1641142625 (1.53 GB)
  Non DFS Used: 25955075743 (24.17 GB)
  DFS Remaining: 395126890496 (367.99 GB)
  DFS Used%: 0.39%
  DFS Remaining%: 93.47%
  Configured Cache Capacity: 0 (0 B)
  Cache Used: 0 (0 B)
  Cache Remaining: 0 (0 B)
  Cache Used%: 100.00%
  Cache Remaining%: 0.00%
  Last contact: Sun Dec 13 22:25:51 UTC 2015
  
  
  Name: 10.0.1.193:50010 (anmol-vm4-new)
  Hostname: anmol-vm4-new
  Decommission Status : Normal
  Configured Capacity: 422723108864 (393.69 GB)
  DFS Used: 1642451666 (1.53 GB)
  Non DFS Used: 21911145774 (20.41 GB)
  DFS Remaining: 399169511424 (371.76 GB)
  DFS Used%: 0.39%
  DFS Remaining%: 94.43%
  Configured Cache Capacity: 0 (0 B)
  Cache Used: 0 (0 B)
  Cache Remaining: 0 (0 B)
  Cache Used%: 100.00%
  Cache Remaining%: 0.00%
  Last contact: Sun Dec 13 22:25:51 UTC 2015
  
  
  Dead datanodes:
  Name: 10.0.1.191:50010 (anmol-vm2-new)
  Hostname: anmol-vm2-new
  Decommission Status : Normal
  Configured Capacity: 0 (0 B)
  DFS Used: 0 (0 B)
  Non DFS Used: 0 (0 B)
  DFS Remaining: 0 (0 B)
  DFS Used%: 100.00%
  DFS Remaining%: 0.00%
  Configured Cache Capacity: 0 (0 B)
  Cache Used: 0 (0 B)
  Cache Remaining: 0 (0 B)
  Cache Used%: 100.00%
  Cache Remaining%: 0.00%
  Last contact: Sun Dec 13 21:20:12 UTC 2015
  
  
  Name: 10.0.1.192:50010 (anmol-vm3-new)
  Hostname: anmol-vm3-new
  Decommission Status : Normal
  Configured Capacity: 0 (0 B)
  DFS Used: 0 (0 B)
  Non DFS Used: 0 (0 B)
  DFS Remaining: 0 (0 B)
  DFS Used%: 100.00%
  DFS Remaining%: 0.00%
  Configured Cache Capacity: 0 (0 B)
  Cache Used: 0 (0 B)
  Cache Remaining: 0 (0 B)
  Cache Used%: 100.00%
  Cache Remaining%: 0.00%
  Last contact: Sun Dec 13 22:09:27 UTC 2015
  </code></pre>