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From Jonathan Ellis <jbel...@gmail.com>
Subject Re: data deleted came back after 9 days.
Date Wed, 18 Aug 2010 13:16:19 GMT
Corrected, thanks.  (Better would be to edit the wiki yourself, of course. :)

On Tue, Aug 17, 2010 at 2:58 PM, Jeremy Dunck <jdunck@gmail.com> wrote:
> On Tue, Aug 17, 2010 at 2:49 PM, Jonathan Ellis <jbellis@gmail.com> wrote:
>> It doesn't have to be disconnected more than GC grace seconds to cause
>> what you are seeing, it just has to be disconnected at all (thus
>> missing delete commands).
>>
>> Thus you need to be running repair more often than gcgrace, or
>> confident that read repair will handle it for you (which clearly is
>> not the case for you :).  see
>> http://wiki.apache.org/cassandra/Operations
>
> FWIW, the docs there say:
> "Remember though that if a node is down longer than your configured
> GCGraceSeconds (default: 10 days), it could have missed remove
> operations permanently"
>
> So that's probably a source of misunderstanding.
>



-- 
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of Riptano, the source for professional Cassandra support
http://riptano.com

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