问题
I recently installed/configured hadoop and curently trying to run some tests. My problem is with copying local data to hdfs:
When I try to run
hdfs dfs -copyFromLocal /home/develop/test/ test
or any similar command, all i get is:
copyFromLocal: `test': No such file or directory
if I run ls, i get the same output:
develop@ubuntu:~$ hdfs dfs -ls
ls: `.': No such file or directory
I also tried to create the directory test with hdfs dfs -mkdir, but unsuccessful, what exactly am I missing ?
回答1:
Add slash in the HDFS path.
For example,
hdfs dfs -mkdir /test
hdfs dfs -copyFromLocal /home/develop/test/ /test
回答2:
If you want to copy a file from your local file system to HDFS, you need to first have that file in your local file system.
Create a file named test under /home/develop and then give the path of this file in the command.
You can even use this command too:
hdfs dfs -put /home/develop/test test
回答3:
After a fresh Hadoop installation ,you need to create user directory under /user on HDFS .
You are getting this error
develop@ubuntu:~$ hdfs dfs -ls
ls: `.': No such file or directory
because you do not have any directory /user/develop on HDFS.
You can create user directory with following commands :
$> sudo su - hdfs -C "hadoop fs -mkdir /user/develop"
$> sudo su - hdfs -C "hadoop fs -chown -R develop:hadoop /user/develop"
$> sudo su - hdfs -C "hadoop fs -chmod -R 750 /user/develop"
You will still need to create test directory but if you use you copyFromLocal command then you need to create test directory in you HDFS user directory .so absolute path for your test dir will be /user/develop/test .
来源：https://stackoverflow.com/questions/32738837/copy-local-data-to-hadoop-hdfs-error