Is there a way in which regionservers can be made to automatically
restart when they crash/shutdown. We see several shutdowns every
day...just wondering if there is any mode in which the daemons can
"autorestart". BTW, I'd be happy to pursue the *cause* of the
crash/shutdown, but it just seems to be a fact of life when you are
running 10 regionservers and generating TB of data into HBase.

 

-g

My 100 region servers run happily almost all the time, so I think you
should definitely investigate!

We preferred to leave the restart to your favorite cluster management
tool, no need to reinvent the wheel.

J-D

On Tue, Mar 22, 2011 at 12:43 PM, Geoff Hendrey <[EMAIL PROTECTED]> wrote:
> Is there a way in which regionservers can be made to automatically
> restart when they crash/shutdown. We see several shutdowns every
> day...just wondering if there is any mode in which the daemons can
> "autorestart". BTW, I'd be happy to pursue the *cause* of the
> crash/shutdown, but it just seems to be a fact of life when you are
> running 10 regionservers and generating TB of data into HBase.
>
>
>
> -g
>
>

Geoff:

Tell us more.  Hardware, sizings, configs., versions, type of
failures.  How many TBs?  How many regions?

Thanks,
St.Ack

On Tue, Mar 22, 2011 at 12:43 PM, Geoff Hendrey <[EMAIL PROTECTED]> wrote:
> Is there a way in which regionservers can be made to automatically
> restart when they crash/shutdown. We see several shutdowns every
> day...just wondering if there is any mode in which the daemons can
> "autorestart". BTW, I'd be happy to pursue the *cause* of the
> crash/shutdown, but it just seems to be a fact of life when you are
> running 10 regionservers and generating TB of data into HBase.
>
>
>
> -g
>
>

Geoff,

In general it's not advisable to simply auto-restart regionservers without digging into the root cause. We had a case where we were doing that and the real problem got masked. Debugging it later took a lot more effort than it would have taken had we looked at it earlier on.

-Amandeep

On Mar 22, 2011, at 12:43 PM, Geoff Hendrey wrote:

> Is there a way in which regionservers can be made to automatically
> restart when they crash/shutdown. We see several shutdowns every
> day...just wondering if there is any mode in which the daemons can
> "autorestart". BTW, I'd be happy to pursue the *cause* of the
> crash/shutdown, but it just seems to be a fact of life when you are
> running 10 regionservers and generating TB of data into HBase.
>
>
>
> -g
>