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MapReduce >> mail # user >> Datanode doesn't connect to Namenode


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Re: Datanode doesn't connect to Namenode
Disable the firewall on data node and namenode machines..
Regards,
Som Shekhar Sharma
+91-8197243810
On Wed, Aug 7, 2013 at 11:33 PM, Jitendra Yadav
<[EMAIL PROTECTED]>wrote:

> Your hdfs name entry should be same on master and databnodes
>
> * <name>fs.default.name</name>*
> *<value>hdfs://cloud6:54310</value>*
>
> Thanks
> On Wed, Aug 7, 2013 at 11:05 PM, Felipe Gutierrez <
> [EMAIL PROTECTED]> wrote:
>
>> on my slave the process is running:
>> hduser@cloud15:/usr/local/hadoop$ jps
>> 19025 DataNode
>> 19092 Jps
>>
>>
>> On Wed, Aug 7, 2013 at 2:26 PM, Jitendra Yadav <
>> [EMAIL PROTECTED]> wrote:
>>
>>> Hi,
>>>
>>> Your logs showing that the process is creating IPC call not for
>>> namenode, it is hitting datanode itself.
>>>
>>> Check you please check you datanode processes status?.
>>>
>>> Regards
>>> Jitendra
>>>
>>> On Wed, Aug 7, 2013 at 10:29 PM, Felipe Gutierrez <
>>> [EMAIL PROTECTED]> wrote:
>>>
>>>> Hi everyone,
>>>>
>>>> My slave machine (cloud15) the datanode shows this log. It doesn't
>>>> connect to the master (cloud6).
>>>>
>>>>  2013-08-07 13:44:03,110 INFO org.apache.hadoop.ipc.Client: Retrying
>>>> connect to server: cloud15/192.168.188.15:54310. Already tried 9
>>>> time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10,
>>>> sleepTime=1 SECONDS)
>>>> 2013-08-07 13:44:03,110 INFO org.apache.hadoop.ipc.RPC: Server at
>>>> cloud15/192.168.188.15:54310 not available yet, Zzzzz...
>>>>
>>>> But when I type jps command on slave machine DataNode is running. This
>>>> is my file core-site.xml in slave machine (cloud15):
>>>>  <configuration>
>>>> <property>
>>>>   <name>hadoop.tmp.dir</name>
>>>>   <value>/app/hadoop/tmp</value>
>>>>   <description>A base for other temporary directories.</description>
>>>> </property>
>>>>
>>>> <property>
>>>>   <name>fs.default.name</name>
>>>>   <value>hdfs://cloud15:54310</value>
>>>>   <description>The name of the default file system.  A URI whose
>>>>   scheme and authority determine the FileSystem implementation.  The
>>>>   uri's scheme determines the config property (fs.SCHEME.impl) naming
>>>>   the FileSystem implementation class.  The uri's authority is used to
>>>>   determine the host, port, etc. for a filesystem.</description>
>>>> </property>
>>>> </configuration>
>>>>
>>>> In the master machine I just swap cloud15 to cloud6.
>>>> In the file /etc/host I have (192.168.188.15  cloud15) and
>>>> (192.168.188.6   cloud6) lines, and both machines access through ssh with
>>>> out password.
>>>>
>>>> Am I missing anything?
>>>>
>>>> Thanks in advance!
>>>> Felipe
>>>>
>>>>
>>>> --
>>>> *--
>>>> -- Felipe Oliveira Gutierrez
>>>> -- [EMAIL PROTECTED]
>>>> -- https://sites.google.com/site/lipe82/Home/diaadia*
>>>>
>>>
>>>
>>
>>
>> --
>> *--
>> -- Felipe Oliveira Gutierrez
>> -- [EMAIL PROTECTED]
>> -- https://sites.google.com/site/lipe82/Home/diaadia*
>>
>
>