Whay会说“ -bash：cd：hadoop：不是目录”吗？

Question

I am trying to run "hadoop wordcount in python" by following this tutorial. As in the tutorial, when I run this command /usr/local/hadoop/bin/hadoop fs -put ~/count_of_monte_cristo.txt /input , it says -bash: cd: hadoop: Not a directory .

In tutorial it says that we need to put the text file by creating aa directory in HDFS. My question is if /bin/hadoop is not a accessible, where should I put the text file for analysis ? Are there any options ? Or, Am I doing something wrong here ?

Answer 1

鉴于您已经在/Users/JJ/hadoop-2.6.0安装了Hadoop，这是您的主目录，因此您应该在运行

/Users/JJ/hadoop-2.6.0/bin/hadoop fs -put ~/count_of_monte_cristo.txt /input

Answer 2

/bin/hadoop or wherever your hadoop executable is located, you should be able to run hadoop filesystem commands using it. put command doesn't put the file in /bin/hadoop directory it tries to put file in location you specified, in your example in /input which is a directory expected in hdfs

When you run any hadoop fs command you are accessing hadoop distributed filesystem (Hdfs) if you have set that up. Else it will run on the local filesystem if you haven't setup Hdfs.

I would suggest first verify your hadoop executable is working fine by running. Replace hadoop with full path of executable if you haven't added hadoop in your PATH

hadoop fs -ls

If it returns directories in hdfs you are good. Else you might not have setup cluster correctly