swift-ring-builder <builder_file> set_replicas <replicas>
Changes the replica count to the given <replicas>. <replicas> may
be a floating-point value, in which case some partitions will have
floor(<replicas>) replicas and some will have ceiling(<replicas>)
in the correct proportions.
A rebalance is needed to make the change take effect.
On Thu, Jun 30, 2016 at 9:53 AM, Alexandr Porunov <
[email protected]> wrote:
> Is it possible to change a replication factor from 2 to 3 or vice versa
> from 3 to 2 in a running cluster?
>
> Best regards,
> Alexandr
>
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