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Posted to user@hbase.apache.org by ChingShen <ch...@gmail.com> on 2010/03/24 02:50:59 UTC

Why do we need the historian column family in .META. table?

Hi,

 I saw a historian column family in .META. table, but in what situation do
we need the column family? thanks.

Shen

Re: Why do we need the historian column family in .META. table?

Posted by Jean-Daniel Cryans <jd...@apache.org>.

That was a family used to keep track of region operations like open,
close, compact, etc. It proved to be more troublesome than handy so we
disabled this feature until coming up with a better solution. The
family stayed for backward compatibility.

J-D

On Tue, Mar 23, 2010 at 6:50 PM, ChingShen <ch...@gmail.com> wrote:
> Hi,
>
>  I saw a historian column family in .META. table, but in what situation do
> we need the column family? thanks.
>
> Shen
>