[SOLVED] Copying a file from Desktop to Hadoop File System HDFS

ubliat · 04-06-2019, 11:42 AM

Hello, I am trying to copy a file from my Desktop to Hadoop File System.

Code:

[root@localhost ~]# hdfs dfs -copyFromLocal 1987.csv /user/root

The terminal returns this output below. I trying to troubleshoot this error but I would appreciate help on this.

https://wiki.apache.org/hadoop/ConnectionRefused

Terminal Output

Code:

 WARN ipc.Client: Failed to connect to server: localhost/127.0.0.1:8020: try once and fail.
java.net.ConnectException: Connection refused
...
copyFromLocal: Call From localhost.localdomain/127.0.0.1 to localhost:8020 failed on connection exception: java.net.ConnectException: Connection refused; For more details see:  http://wiki.apache.org/hadoop/ConnectionRefused

scasey · 04-07-2019, 09:23 PM

The first line in the link you posted:

Quote:

You get a ConnectionRefused Exception when there is a machine at the address specified, but there is no program listening on the specific TCP port

That seems pretty clear...what do you need help with?

ubliat · 04-08-2019, 03:22 PM

I fixed this, my internet configuration was not specified when installing centos 7. I just did a new install and got it working.