Anti-entropy repair with a 4 node cluster replication factor 4

[Fred Al <fr...@gmail.com>]

Hello!
Running Cassandra 2.2.9 with a 4 node cluster with replication factor 4.
When running anti-entropy repair is it required to run repair on all 4
nodes or is it sufficient to run it on only one node?
Since all data is replicated on all nodes i.m.o. only one node would need
to be repaired to repair all data in the cluster.
If it's required to run on all nodes, please give an explanation as to why?

Regards
Fredrik

Re: Anti-entropy repair with a 4 node cluster replication factor 4

[manish khandelwal <ma...@gmail.com>]

If you run full repair  then it should be fine, since all the replicas are
present on all the nodes. If you are using -pr option then you need to run
on all the nodes.

On Tue, Oct 27, 2020 at 4:11 PM Fred Al <fr...@gmail.com> wrote:

> Hello!
> Running Cassandra 2.2.9 with a 4 node cluster with replication factor 4.
> When running anti-entropy repair is it required to run repair on all 4
> nodes or is it sufficient to run it on only one node?
> Since all data is replicated on all nodes i.m.o. only one node would need
> to be repaired to repair all data in the cluster.
> If it's required to run on all nodes, please give an explanation as to why?
>
> Regards
> Fredrik
>