hdfs - ls: Failed on local exception: com.google.protobuf.InvalidProtocolBufferException:

Question

I am trying to use the below to list my dirs in hdfs:

ubuntu@ubuntu:~$ hadoop fs -ls hdfs://127.0.0.1:50075/ 
ls: Failed on local exception: com.google.protobuf.InvalidProtocolBufferException: 
Protocol    message end-group tag did not match expected tag.; 
Host Details : local host is: "ubuntu/127.0.0.1"; destination host is: "ubuntu":50075; 

Here is my /etc/hosts file

127.0.0.1       ubuntu localhost
#127.0.1.1      ubuntu

# The following lines are desirable for IPv6 capable hosts
::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters

How do I properly use hdfs:// to list my dirs?

I am using couldera 4.3 on ubuntu 12.04

Answer 1

HDFS is not running at 50075. To check your hdfs port use the following command in linux

hdfs getconf -confKey fs.default.name

You will get the output something like

hdfs://hmaster:54310

And correct your URL accordingly

Answer 2

On your cloudera manager, check on the Name node for configuration item "NameNode Service RPC Port" OR "dfs.namenode.servicerpc-address". Add the same port number from there on the URL. And it should work fine.