I have constructed a single-node Hadoop environment on CentOS using the Cloudera CDH repository. When I want to copy a local file to HDFS, I used the command:
sudo -u hdfs hadoop fs -put /root/MyHadoop/file1.txt /
But,the result depressed me:
put: '/root/MyHadoop/file1.txt': No such file or directory
I'm sure this file does exist.
Please help me,Thanks!
Answer
As user hdfs, do you have access rights to /root/ (in your local hdd)?. Usually you don't.
You must copy file1.txt to a place where local hdfs user has read rights before trying to copy it to HDFS.
Try:
cp /root/MyHadoop/file1.txt /tmp
chown hdfs:hdfs /tmp/file1.txt
# older versions of Hadoop
sudo -u hdfs hadoop fs -put /tmp/file1.txt /
# newer versions of Hadoop
sudo -u hdfs hdfs dfs -put /tmp/file1.txt /
--- edit:
Take a look at the cleaner roman-nikitchenko's answer bellow.