`hadoop dfs`和`hadoop fs`之间的区别 [英] Difference between `hadoop dfs` and `hadoop fs`

问题描述

我看到了 dfs 命令，然后去了文档，但我无法理解。

以我的观点 fs 和 dfs 工作类似。任何一个给出了完全不同的结果？

I saw the dfs command, then went to the documentation but I am unable to understand.
In my point of view fs and dfs working similar. Any one give exact difference?

推荐答案

您可以在$ HADOOP_HOME中看到两个命令（hadoop fs& hadoop dfs） / bin / hadoop

You can see definitions of the two commands (hadoop fs & hadoop dfs) in $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"
...

所以，它们完全一样。

这篇关于`hadoop dfs`和`hadoop fs`之间的区别的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！