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From vedavyasa reddy <vedavyas.ved...@gmail.com>
Subject Re: Two hadoop nodes on same machine while a second machine not joining the cluster
Date Tue, 16 Jun 2015 14:37:18 GMT
hi,
check in slave node Hadoop_home/etc/hadoop/"core-site.xml"whether host name
of the master is given correctly or not. i.e., "hdfs://master-hostname:9000"

and if these is correct then check the "mapred-site.xml" whether "job
Tracker address" is given correct or not.

On Tue, Jun 16, 2015 at 6:23 PM, Arbi Akhina <arbi.akhina@gmail.com> wrote:

> Hi,
>
> I have a test cluster of two machines, on both of them hadoop is
> installed. I've configured the hadoop cluster but on admin UI (as in the
> below picture) I see that two nodes are running on the same master machine,
> and that the other machine has no Hadoop node.
>
> [image: enter image description here]
>
> On master machine following services are running:
>
> ~$ jps
> 26310 ResourceManager
> 27593 Jps
> 26216 DataNode
> 26135 NameNode
> 26557 NodeManager
> 26701 JobHistoryServer
>
> On the slave machine:
>
> ~$ jps
> 2614 DataNode
> 2920 Jps
> 2707 NodeManager
>
> I don't why the slave is not joining the cluster (It was before). I tried
> to shutdown all servers on both machines and format HDFS then restarting
> everything but that didn't help. Any help to figure what's causing that
> behavior is appreciated.
>

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