Is all meta data aways in memory when hbase are running?

[Zhou Shuaifeng <zh...@huawei.com>]

Is all regions info aways in memory whatever the region is busy or not?

 

Zhou Shuaifeng(Frank)




----------------------------------------------------------------------------
---------------------------------------------------------
This e-mail and its attachments contain confidential information from
HUAWEI, which 
is intended only for the person or entity whose address is listed above. Any
use of the 
information contained herein in any way (including, but not limited to,
total or partial 
disclosure, reproduction, or dissemination) by persons other than the
intended 
recipient(s) is prohibited. If you receive this e-mail in error, please
notify the sender by 
phone or email immediately and delete it!

 

Re: Is all meta data aways in memory when hbase are running?

[Mingjie Lai <mj...@gmail.com>]

HBase clients caches _accessed_ region location information in heap. In 
addition, whenever it locates a new region, it will perform a region 
location prefetch for the adjacent regions, and the default number of 
prefetched region location info is configurable (10 by default).

It's what you wanted to ask, right?

-mingjie

On 02/17/2011 10:49 AM, Zhou Shuaifeng wrote:
> Is all regions info aways in memory whatever the region is busy or not?
>
>
>
> Zhou Shuaifeng(Frank)
>
>
>
>
> ----------------------------------------------------------------------------
> ---------------------------------------------------------
> This e-mail and its attachments contain confidential information from
> HUAWEI, which
> is intended only for the person or entity whose address is listed above. Any
> use of the
> information contained herein in any way (including, but not limited to,
> total or partial
> disclosure, reproduction, or dissemination) by persons other than the
> intended
> recipient(s) is prohibited. If you receive this e-mail in error, please
> notify the sender by
> phone or email immediately and delete it!
>
>
>
>