On 2017-07-20 13:23 (-0700), Roger Warner wrote:
> Hi
>
> Iâm a little dim on what multi datacenter implies in the 1 replica case.
> I know about replica recovery, how about ânode recoveryâ
>
> As I understand if there a node failure or disk crash with a
SimpleStrategy doesn’t take DC or rack into account at all. It simply places
replicas on subsequent tokens. You could end up with 3 copies in 1 DC and zero
in another.
/**
* This class returns the nodes responsible for a given
* key but does not respect rack awareness. Basically
*
> If using the SimpleStrategy replication class, it appears that
> replication_factor is the only option, which applies to the entire
> cluster, so only one node in both datacenters would have the data.
This runs counter to my understanding, or else I'm not reading your
statement correctly. When
Datacenter replication is defined in the keyspace schema, so I believe that
...
WITH replication = {'class': 'NetworkTopologyStrategy', 'DC1': 1,
'DC2': 1}
...
you ought to be able to repair DC1 from DC2, once you have the DC1 node
healthy again.
If using the SimpleStrategy replication
Hi
I’m a little dim on what multi datacenter implies in the 1 replica case. I
know about replica recovery, how about “node recovery”
As I understand if there a node failure or disk crash with a single node
cluster with replication factor 1 I lose data.Easy.
nodetool tells me each node