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From Andrew Purtell <apurt...@apache.org>
Subject PROD/DR - Replication
Date Sat, 08 Dec 2012 01:58:40 GMT
Agree with what Ian says below except I'd say with work it's possible to do
cross DC quorum writes in a layer on top of HBase that persists into
HBase, like
when Google built Megastore on BigTable. At this year's VLDB if I recall
correctly there was a megastore-like system with an interesting variation built
on HBase presented in http://arxiv.org/abs/1208.0270 .

On Saturday, December 8, 2012, Ian Varley wrote:

> Juan,
> No; that would mean every single write to HBase has to wait for an ACK
> from a remote data center, which would decrease your cluster throughput
> dramatically. If you need that, consider other database solutions.
> Ian
> On Dec 7, 2012, at 12:14 PM, Juan P. wrote:
> I was reading up on HBase Replication and wanted to make sure I'm not
> missing something.
> Given that replication happens asynchronously the replication strategy has
> an "eventually consistent" policy.
> I was considering using this feature for Production / Disaster Recovery
> setup.
> Is there a way to enforce Consistency so that if my PROD environment should
> ever go down, I can 100% sure that DR will be completely up to date?
> Thank you,
> Juan

Best regards,

   - Andy

Problems worthy of attack prove their worth by hitting back. - Piet Hein
(via Tom White)

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