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From Ted Yu <yuzhih...@gmail.com>
Subject Re: Region server failover
Date Thu, 13 Mar 2014 20:51:44 GMT
Take a look at HBASE-10070:
HBase read high-availability using eventually consistent region replicas


On Thu, Mar 13, 2014 at 1:49 PM, Jeff Storey <storey.jeff@gmail.com> wrote:

> I'm still somewhat new to HBase and I'm trying to understand possibilities
> for region server failover. If I have a region server that goes down, it
> looks like I won't have any access to that region's data until a backup
> server comes online. I read that I can reduce the zookeeper timeout to
> minimize that time down, but in a system that is meant to be highly
> available, it seems like this could be cause for concern since a portion of
> the data will be entirely inaccessible.
> Is there a way to have a secondary read-only region server that becomes the
> new primary region server in the event of a failure? This way that data
> will always be accessible unless all of the region server backups fail? Or
> are there other ways to replicate region data to avoid loss of access for
> possibly several minutes to that data if the server goes down?
> Thanks,
> Jeff

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