> So if the cluster is up, then you can insert records in to HBase even though > you lost a RS that was handing a specific region.
What happens when the RS goes down? Writes to that region will be written to another region server? Another RS assumes the region "range" while the RS is down? What happens when the RS that was down goes up again? From: [email protected] Subject: Re: write availability I don’t know if I would say that… I read Marcelo’s question of “if the cluster is up, even though a RS may be down, can I still insert records in to HBase?” So if the cluster is up, then you can insert records in to HBase even though you lost a RS that was handing a specific region. But because he talked about syncing nodes… I could be misreading his initial question… > On Apr 7, 2015, at 9:02 AM, Serega Sheypak <[email protected]> wrote: > >> If I have an application that writes to a HBase cluster, can I count that > the cluster will always available to receive writes? > No, it's CP, not AP system. >> so everything get in sync when the other nodes get up again > There is no hinted backoff, It's not Cassandra. > > > > 2015-04-07 14:48 GMT+02:00 Marcelo Valle (BLOOMBERG/ LONDON) < > [email protected]>: > >> If I have an application that writes to a HBase cluster, can I count that >> the cluster will always available to receive writes? >> I might not be able to read if a region server which handles a range of >> keys is down, but will I be able to keep writing to other nodes, so >> everything get in sync when the other nodes get up again? >> Or I might get no write availability for a while? The opinions expressed here are mine, while they may reflect a cognitive thought, that is purely accidental. Use at your own risk. Michael Segel michael_segel (AT) hotmail.com
