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From Doug Meil <doug.m...@explorysmedical.com>
Subject Re: How can HBase return the metadata to the client?
Date Sat, 08 Oct 2011 13:10:26 GMT

Hi there-

There is a section in the book on this...

http://hbase.apache.org/book.html#arch.catalog






On 10/8/11 6:19 AM, "yonghu" <yongyong313@gmail.com> wrote:

>Hello,
>
>I read the blog
>http://www.larsgeorge.com/2009/10/hbase-architecture-101-storage.html and
>tried to understand the architecture of the HBase. There is one thing that
>makes me confusing. If I understand right, the client must connect the
>Zookeeper cluster to get the metadata of particular table information and
>then use this information to retrieve the table.
>My question is the node which hosts the  ".META. table" and "-ROOT-
>region"
>is the node which belongs to HBase cluster or Zookeeper cluster? If they
>belongs to the Zookeeper cluster, what is the functionality of the Master
>node in the HBase cluster, only assigning the work node when starting the
>HBase? In my point of view, the Master node will maintain the ".META.
>table"
>and "-ROOT- region" information.
>
>Thanks!
>
>Yong


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