On Thu, Mar 19, 2015 at 10:32 AM, Ali Akhtar <ali.rac...@gmail.com> wrote:

> Just wondering - why do you have to trigger the repairs? Is that necessary
> in Cassandra?
>

Manual repair is the only mechanism in Cassandra which guarantees
consistency.

A repair must be run once per gc_grace_seconds in every column family that
does DELETE-like[1] operations.

=Rob
[1] including some forms of CQL UPDATE, etc.

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