Unable to upload file onto Hadoop FS using FS command

On Mon, Aug 20, 2012 at 4:20 PM, Debashis Ghosh wrote:
Hi,

I am using CDH4 on a single machine as both client and server node. Telnet
works perfectly fine. The DATANODE doesn't start.

I am unable to upload sample table for analysis onto Hadoop using the
command: hadoop fs -put <filename>
The following error appears:

12/08/21 01:46:50 INFO ipc.Client: Retrying connect to server:
localhost/127.0.0.1:8020. Already tried 0 time(s).
12/08/21 01:46:51 INFO ipc.Client: Retrying connect to server:
localhost/127.0.0.1:8020. Already tried 1 time(s).
12/08/21 01:46:52 INFO ipc.Client: Retrying connect to server:
localhost/127.0.0.1:8020. Already tried 2 time(s).
12/08/21 01:46:53 INFO ipc.Client: Retrying connect to server:
localhost/127.0.0.1:8020. Already tried 3 time(s).
12/08/21 01:46:54 INFO ipc.Client: Retrying connect to server:
localhost/127.0.0.1:8020. Already tried 4 time(s).
12/08/21 01:46:55 INFO ipc.Client: Retrying connect to server:
localhost/127.0.0.1:8020. Already tried 5 time(s).
12/08/21 01:46:56 INFO ipc.Client: Retrying connect to server:
localhost/127.0.0.1:8020. Already tried 6 time(s).
12/08/21 01:46:57 INFO ipc.Client: Retrying connect to server:
localhost/127.0.0.1:8020. Already tried 7 time(s).
12/08/21 01:46:58 INFO ipc.Client: Retrying connect to server:
localhost/127.0.0.1:8020. Already tried 8 time(s).
12/08/21 01:46:59 INFO ipc.Client: Retrying connect to server:
localhost/127.0.0.1:8020. Already tried 9 time(s).
put: Call From <myhostname>/127.0.1.1 to localhost:8020 failed on connection
exception: java.net.ConnectException: Connection refused; For more details
see: http://wiki.apache.org/hadoop/ConnectionRefused

Please help.

On Mon, Aug 20, 2012 at 4:47 PM, Debashis Ghosh wrote:
I checked the /etc/hosts file, Joey.
It has the following entries:

127.0.0.1 localhost
127.0.1.1 <myhostname>

So, it doesnt seem to be an issue with the hosts file.




--
Thanks and regards,
Debashis

On Monday, August 20, 2012 1:53:26 PM UTC-7, Joey Echeverria wrote:

That is the problem.

Your namenode is almost certainly listening on <myhostname>:8020
rather than localhost:8020.

I'm assuming that this machine has no external network connectivity?
If I'm right, than I"d configure /etc/hosts like this:

127.0.0.1 <myhostname> localhost

if you do have an external network, then I'd do it like this:

127.0.0.1 localhost
<external ip> <myhostname>.<my fully qualified domain name> <myhostname>

and I'd make sure that <myhostname>.<my fully qualified domain name>
was used everywhere in the config files.

-Joey


--
Joey Echeverria
Principal Solutions Architect
Cloudera, Inc.

On Wed, May 15, 2013 at 1:47 PM, Ram Srinivasan wrote:
Joey:

I have a similar problem and need help. On an Amazon EC2 Ubuntu machine, I
was installing CDH4 and trying MRV1 test from this link.
http://www.cloudera.com/content/cloudera-content/cloudera-docs/CDH4/4.2.0/CDH4-Quick-Start/cdh4qs_topic_3_2.html

My error is a ConnectException on localhost:8080. My hosts file on the
machine looks like this
http://screencast.com/t/V9ebSewnEP

The error from running the example Hadoop job is here
http://screencast.com/t/kpx6aoNHG

What is wrong? Is the hosts file looking right?

Thank you.

On Tuesday, 21 August 2012 01:50:27 UTC+5:30, Debashis Ghosh wrote:

Hi,

I am using CDH4 on a single machine as both client and server node. Telnet
works perfectly fine. The DATANODE doesn't start.

I am unable to upload sample table for analysis onto Hadoop using the
command: hadoop fs -put <filename>
The following error appears:

12/08/21 01:46:50 INFO ipc.Client: Retrying connect to server: localhost/
127.0.0.1:8020. Already tried 0 time(s).
12/08/21 01:46:51 INFO ipc.Client: Retrying connect to server: localhost/
127.0.0.1:8020. Already tried 1 time(s).
12/08/21 01:46:52 INFO ipc.Client: Retrying connect to server: localhost/
127.0.0.1:8020. Already tried 2 time(s).
12/08/21 01:46:53 INFO ipc.Client: Retrying connect to server: localhost/
127.0.0.1:8020. Already tried 3 time(s).
12/08/21 01:46:54 INFO ipc.Client: Retrying connect to server: localhost/
127.0.0.1:8020. Already tried 4 time(s).
12/08/21 01:46:55 INFO ipc.Client: Retrying connect to server: localhost/
127.0.0.1:8020. Already tried 5 time(s).
12/08/21 01:46:56 INFO ipc.Client: Retrying connect to server: localhost/
127.0.0.1:8020. Already tried 6 time(s).
12/08/21 01:46:57 INFO ipc.Client: Retrying connect to server: localhost/
127.0.0.1:8020. Already tried 7 time(s).
12/08/21 01:46:58 INFO ipc.Client: Retrying connect to server: localhost/
127.0.0.1:8020. Already tried 8 time(s).
12/08/21 01:46:59 INFO ipc.Client: Retrying connect to server: localhost/
127.0.0.1:8020. Already tried 9 time(s).
put: Call From <myhostname>/127.0.1.1 to localhost:8020 failed on
connection exception: java.net.ConnectException: Connection refused; For
more details see: http://wiki.apache.org/hadoop/ConnectionRefused

Please help.

Hi,

I am also getting similar problem.

When i try "hadoop fs -ls", getting below results.

ls: Call From cbr-srv-hp0725/172.23.63.78 to hadoop.rajindia.in:8020 failed
on connection exception: java.net.ConnectException: Connection refused; For
more details see: http://wiki.apache.org/hadoop/ConnectionRefused

Could anyone help me on this?

Regards,
Raj