incubator-cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Jeremy Dunck <jdu...@gmail.com>
Subject Re: data deleted came back after 9 days.
Date Tue, 17 Aug 2010 19:58:28 GMT
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.

Mime
View raw message