Can't create directory with Hadoop command?

Question

I've been starting NameNode and DataNode, but when I try to use HDFS command to make a directory(in any place), it doesn't work.

Here is my command:

./hdfs dfs  -mkdir -p /usr/master/datas

and I also trying to change the format of my path:

./hdfs dfs  -mkdir -p "/usr/master/datas"

but I get same result.

I'm just starting to learn big-data. Can anyone tell me how to fix this issue and how debug the issue?

An error message would help. Did you look at the namenode logs too? — tk421
– tk421, Commented May 9, 2018 at 18:03

OneCricketeer · Accepted Answer · 2018-05-09 23:59:08Z

1

/usr doesn't exist on HDFS. That's a Unix directory.

The user directory in HDFS is /user.

Plus, you need to be an HDFS superuser to create HDFS folders under the root path, or at least folders not owned by the current user.

answered May 9, 2018 at 23:59

OneCricketeer

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1 Comment

I checked, I can see the directory in HDFS web page, Thank you.