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From daemeon reiydelle <daeme...@gmail.com>
Subject Re: Seed nodes as part of cluster
Date Mon, 01 May 2017 21:11:51 GMT
Caps below for emphasis, not shouting ;{)

Seed nodes are IDENTICAL to all other node hdfs nodes or you will wish
otherwise. Folks get confused because of terminoligy. I refer to this stuff
as "the seed node service of a normal hdfs node". ANY HDFS NODE IS ABLE TO
ACT AS A SEED NODE BY DEFINITION. But ONLY the nodes listed as seeds in the
XML will be contacted, however.

The seed "function" is only used by new nodes when they FIRST join the
cluster for the FIRST time, then never used again (once an node joins the
cluster it is using different protocols, a separate list of nodes, etc.).




*.......*



*Daemeon C.M. ReiydelleUSA (+1) 415.501.0198London (+44) (0) 20 8144 9872*

On Mon, May 1, 2017 at 2:05 PM, Roman Naumenko <roman@sproutling.com> wrote:

> So they are like any other “data” node… but special?
>
> I’m so freaking confused by this seed nodes design.
>
> —
> Roman
>
> On May 1, 2017, at 1:37 PM, vasu gunja <vasu.nosql@gmail.com> wrote:
>
> Seed will contain meta data + actual data too
>
> On Mon, May 1, 2017 at 3:34 PM, Roman Naumenko <roman@sproutling.com>
> wrote:
>
>> Hi,
>>
>> I’d like to confirm that seed nodes doesn’t contain any data. Is it
>> correct?
>>
>> Can the instances for seed nodes be smaller size than for data nodes?
>>
>> Thank you
>> Roman
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>
>

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