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From Kun Ren <ren.h...@gmail.com>
Subject Re: HDFS Federation
Date Thu, 28 Apr 2016 13:48:06 GMT
Thanks a lot, Akira.

When the Federation is disabled, I can view the namenode from
http://localhost:50070

Do you know where is the 50070 come form or where to set it? If I configure
the Federation in one node, I probably will change this, right?

Thanks a lot.

On Thu, Apr 28, 2016 at 1:55 AM, Akira AJISAKA <ajisakaa@oss.nttdata.co.jp>
wrote:

> Hi Kun,
>
> (1) ViewFileSystem is related.
>
> https://hadoop.apache.org/docs/r2.7.2/hadoop-project-dist/hadoop-hdfs/ViewFs.html
>
> (2) Yes, NameNode Federation is disabled by default.
> I suppose it is possible to configure NameNode Federation in one node by
> setting different HTTP/RPC port and fsimage/edits directory for each
> NameNode. I haven't tried this, so perhaps it is not possible.
>
> Regards,
> Akira
>
> On 4/28/16 09:30, Kun Ren wrote:
>
>> Hi Genius,
>>
>> I have two questions about the HDFS Federation:
>> (1) Since there are multiple namenodes,  there should be some code that
>> analysis the client request and transfer  the request to the appropriate
>> namenode, could you please point to me where I can find the related code?
>>
>> (2) .Also just confirm that the Hadoop 2.7.2 support HDFS Federation,
>> but in default there is only 1 namenode, is this correct? Meanwhile, do
>> you think it is possible to configure the HDFS Fderation in the pseudo
>> distributed mode in one node?
>>
>> Thanks so much in advance.
>>
>> Best,
>> Kun Ren
>>
>
>
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