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Comments for Document: Multi-Server Based Namespace Data Management of Resource Namespace Service
Author(s):L. Guo, X. Wang, M. Xu, W. Zhou
Type:INFO
Area:Data
Group:GFS-WG
Public Comment End:10 Oct, 2009

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Comments:


Posted by: merzky 2009-09-20 16:02:49various comments

Section 2 can go: this is not a specification, and the listed notational conventions are not used AFAICS.

Setting text alignment to 'Justified' helps readablitity

Otherwise, the document looks good, and informational, to me. I did not read it in full detail though.


Posted by: joyfulface 2009-10-09 20:51:41Good draft
Master node seems to be the single point of failure. Since master only acts as a load balance node, it's easy to deploy a multi-node based master nodes set, and the single point of failure seems not a big problem.

It's useful to me, and I'm eager to know whether the author has implemented this system.


Posted by: superhan 2009-10-09 20:55:15In case of one namenode data destroied,How to repair it.
Does it take long time ?
Will the service stop for long?


Posted by: guoleitao 2009-11-12 02:50:13
Actually, the namespace service can be built on 1 master and several slaves, there provides a fault-tolerant mechanism for slaves, but if master down, a master election policy will be carried out. A simple policy for election can be random, roundrobin or load-balanced. It's mature technologies, couldn't be a big problem


Posted by: sjn5 2009-11-14 00:42:49Simple Document
Nice simple document. Captures a very simple use of RNS.

Editorial:
Section 1. 'can not' --> cannot

Section 3. Master node section. 'Master node doesn't store' --> 'Master node The master node doesn't store'



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