Hi,
the main issue that we are trying to connect a datanode from a remote
domain to the master node that is behind a firewall that does not have
8020 open. We change the port from the core-site xml to 8090 and restart.
But when we try to start hdfs, it seems that all services are started,
datanode is listed in the jps, however in the datanode logs we get the
following error:
2011-06-02 12:41:21,378 INFO org.apache.hadoop.ipc.Client: Retrying
connect to server: master/xxx.xxx.xxx.xxx:8090. Already tried 3
time(s).
and it finally gives up. Thanks for the link, it is very helpful to have
all this info concentrated.
BR,
George
On 6/2/2011 7:37 PM, Harsh J wrote:
George,
Could you additionally describe the issues you're facing right now w.r.t. ports?
If you need a fuller port number reference, we have a blog post here
you can get them from:
http://www.cloudera.com/blog/2009/08/hadoop-default-ports-quick-reference/
On Thu, Jun 2, 2011 at 8:18 PM, George Kousiouris<gkous...@mail.ntua.gr> wrote:
Hi,
thanks for the reply, we tried this with a definitely open (from a firewall
pov) port but still did not work. Maybe something else in addition is
needed?
Thanks,
George
On 6/2/2011 5:32 PM, John Armstrong wrote:
On Thu, 02 Jun 2011 17:23:08 +0300, George Kousiouris
<gkous...@mail.ntua.gr> wrote:
Are there anywhere instructions on how to change from the default ports
of Hadoop and HDFS? My main interest is in default port 8020.
I think this is part of fs.default.name. You would go into core-site.xml
and add (or change)
<property>
<name>fs.default.name</name>
<value>hdfs://[namenode]:[port]</value>
</property>
I'm sort of new to this myself, so if I'm wrong I hope someone will
correct me.
--
---------------------------
George Kousiouris
Electrical and Computer Engineer
Division of Communications,
Electronics and Information Engineering
School of Electrical and Computer Engineering
Tel: +30 210 772 2546
Mobile: +30 6939354121
Fax: +30 210 772 2569
Email: gkous...@mail.ntua.gr
National Technical University of Athens
9 Heroon Polytechniou str., 157 73 Zografou, Athens, Greece
--
---------------------------
George Kousiouris
Electrical and Computer Engineer
Division of Communications,
Electronics and Information Engineering
School of Electrical and Computer Engineering
Tel: +30 210 772 2546
Mobile: +30 6939354121
Fax: +30 210 772 2569
Email: gkous...@mail.ntua.gr
National Technical University of Athens
9 Heroon Polytechniou str., 157 73 Zografou, Athens, Greece
