HBase mttr

[Serega Sheypak <se...@gmail.com>]

Hi, we are running HBase on super-low-cost HW :)
Sometimes random node goes down. And HBase needs a time to move regions
from failed RS.

What are the practices to:
1. minimize MTTR?
2. is there any possibility to gracefully handle situation when region is
not accessible for r/w?
I can just drop the data, but I can't wait seconds or minutes for response.
I would like to break request after 100ms and return empty result.

Re: HBase mttr

[Ted Yu <yu...@gmail.com>]

Have you read '9.3.4. Better Mean Time to Recover (MTTR)' under
http://hbase.apache.org/book.html#important_configurations ?

For #2, can you take a look at
https://issues.apache.org/jira/browse/HBASE-10070 ?

Cheers

On Thu, Feb 19, 2015 at 12:46 AM, Serega Sheypak <se...@gmail.com>
wrote:

> Hi, we are running HBase on super-low-cost HW :)
> Sometimes random node goes down. And HBase needs a time to move regions
> from failed RS.
>
> What are the practices to:
> 1. minimize MTTR?
> 2. is there any possibility to gracefully handle situation when region is
> not accessible for r/w?
> I can just drop the data, but I can't wait seconds or minutes for response.
> I would like to break request after 100ms and return empty result.
>