Hadoop: What is the difference between `hadoop dfs` and `hadoop fs`?

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I see the usage of fs and dfs and find them both same. I tried to find their definitions in doc but couldnt find them. Where do I find the difference on how it works?
Nov 6, 2018 in Big Data Hadoop by slayer
• 29,050 points
263 views

1 answer to this question.

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You can find the definition here:

$HADOOP_HOME/bin/hadoop

...
elif [ "$COMMAND" = "datanode" ] ; then
  CLASS='org.apache.hadoop.hdfs.server.datanode.DataNode'
  HADOOP_OPTS="$HADOOP_OPTS $HADOOP_DATANODE_OPTS"
elif [ "$COMMAND" = "fs" ] ; then
  CLASS=org.apache.hadoop.fs.FsShell
  HADOOP_OPTS="$HADOOP_OPTS $HADOOP_CLIENT_OPTS"
elif [ "$COMMAND" = "dfs" ] ; then
  CLASS=org.apache.hadoop.fs.FsShell
  HADOOP_OPTS="$HADOOP_OPTS $HADOOP_CLIENT_OPTS"
elif [ "$COMMAND" = "dfsadmin" ] ; then
  CLASS=org.apache.hadoop.hdfs.tools.DFSAdmin
  HADOOP_OPTS="$HADOOP_OPTS $HADOOP_CLIENT_OPTS"
...

And as you can see in the definition, they are exactly the same.

answered Nov 6, 2018 by Omkar
• 67,480 points

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