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From Jae Joo <jaejo...@gmail.com>
Subject Re: Basic questions
Date Thu, 16 Apr 2009 23:38:04 GMT
I have read and foind that the master node is SPOF and 0.20 will have
failover system for master node. Any update or any solution to avio
SPOF?
Jae

On 4/16/09, Billy Pearson <sales@pearsonwholesale.com> wrote:
> hbase and hadoop both have a single node (namenode & master) that tell the
> clients where stuff is that's all they do is keep up with
> where stuff is they do not handle the getting of the data the client api
> will go to the node with the data they tell it to find the data and get the
> data.
>
> as for adding new nodes to hadoop to balance the cluster you can use
> bin/start-balancer.sh -threshold 5
> Where 5 is the % you want the nodes to be with in each other in terms of
> used %
>
> Billy
>
>
> "Jae Joo" <jaejoo08@gmail.com> wrote in
> message news:3eb24ef50904161430we261882v12600704f5218d3@mail.gmail.com...
>> Hi,
>>
>> We are doing some feasibility study of HBase and have questions.
>> 1. Once we have build tables on certain number node and decide to add more
>> nodes, how it is working? I know that it is not hbase, but hadoop
>> questions.
>> Will it automatically redistribute the files or start utilizing the new
>> node
>> for new inserted records?
>>
>> 2. Is there any way to have multile master nodes? Should all traffis (or
>> requests) be going to SIngle Master node to access the data from hbase?
>>
>>
>> Thanks,
>>
>> Jae
>>
>
>
>

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