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From Arbi Akhina <arbi.akh...@gmail.com>
Subject Re: Two hadoop nodes on same machine while a second machine not joining the cluster
Date Tue, 16 Jun 2015 16:16:35 GMT
Fixed, the two machines had same hostname :(

On Tue, Jun 16, 2015 at 5:55 PM, Arbi Akhina <arbi.akhina@gmail.com> wrote:

> Here is the content of configuration files on both machines:
>
> Here is the content of *core-site.xml*
> <configuration>
>   <property>
>     <name>fs.default.name</name>
>     <value>hdfs://hadoop-server</value>
>   </property>
> </configuration>
>
> Here is the content of *mapred-site.xml*
> <configuration>
>   <property>
>     <name>mapreduce.framework.name</name>
>     <value>yarn</value>
>   </property>
> </configuration>
>
>
> On Tue, Jun 16, 2015 at 4:37 PM, vedavyasa reddy <
> vedavyas.veda92@gmail.com> wrote:
>
>> 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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