Take a look at HBASE-10070: HBase read high-availability using eventually consistent region replicas
Cheers On Thu, Mar 13, 2014 at 1:49 PM, Jeff Storey <[email protected]> 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 >
