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From Lars George <lars.geo...@gmail.com>
Subject Re: RegionServer Page
Date Thu, 02 Jun 2011 12:35:12 GMT
Oh, and while at it add a "Master" link, which can get that out of the
ZK details. Otherwise you have to use the browsers back button to
track back. Awkward.

On Thu, Jun 2, 2011 at 2:31 PM, Lars George <lars.george@gmail.com> wrote:
> Hi,
> We have
> <p>Region names are made of the containing table's name, a comma,
> the start key, a comma, and a randomly generated region id.  To illustrate,
> the region named
> <em>domains,apache.org,5464829424211263407</em> is party to the table
> <em>domains</em>, has an id of <em>5464829424211263407</em> and
the first key
> in the region is <em>apache.org</em>.  The <em>-ROOT-</em>
> and <em>.META.</em> 'tables' are internal sytem tables (or 'catalog'
> tables in db-speak).
> The -ROOT- keeps a list of all regions in the .META. table.  The .META. table
> keeps a list of all regions in the system. The empty key is used to denote
> table start and table end.  A region with an empty start key is the
> first region in a table.
> If region has both an empty start and an empty end key, its the only
> region in the table.  See
> <a href="http://hbase.org">HBase Home</a> for further explication.<p>
> this is *cough* slightly outdated. Need to updated for new style names, eg.
> usertable,user2023964814,1305724074865.9bd85e8e946817bd12233595eae5a4cf.
> Important is to note that the trailing dot is IMPORTANT (maybe not
> why, but we need to say that it needs to be included). Also fix typos
> in text along the way.
> Mkay?
> Lars

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