slightly off topic, but does anyone know off the top of their head what happens
if data is being written at LOCAL_QUORUM to a multi data center setup faster
than the inter data center link can handle… something has to block, throw an
exception, die, or have unbounded growth (memory, threads, on
>
> The picture shows a sample request, which is why the coordinator points to
> two specific nodes. What I was trying to convey that the coordinator node
> would ensure that 2 of the 3 nodes were written to before reporting success
> to the client.
>
This is my point. ANY 2 of 3. Your picture sho
On Tue, Feb 11, 2014 at 10:14 AM, Mullen, Robert
wrote:
> Thanks for the feedback.
>
> The picture shows a sample request, which is why the coordinator points to
> two specific nodes. What I was trying to convey that the coordinator node
> would ensure that 2 of the 3 nodes were written to before
Thanks for the feedback.
The picture shows a sample request, which is why the coordinator points to
two specific nodes. What I was trying to convey that the coordinator node
would ensure that 2 of the 3 nodes were written to before reporting success
to the client.
I found the article here, it sa
1. reply part is missing.
2. It is confusing a little bit. I would not use term "synchronous".
Everything is asynchronous here. Coordinator writes data to all local nodes
and waits for response from ANY two of them (in case of quorum). In your
picture it looks like the coordinator first makes deci
So is that picture incorrect, or just incomplete missing the piece on how
the nodes reply to the coordinator node.
On Tue, Feb 11, 2014 at 9:38 AM, sankalp kohli wrote:
> @Mullen,
> I think your diagram does not answer the question on responses.
> @Sameer
> All nodes in DC2 will replay back to t
@Mullen,
I think your diagram does not answer the question on responses.
@Sameer
All nodes in DC2 will replay back to the co-ordinator in DC1. So if you
have replication of DC1:3,DC2:3. A co-ordinator node will get 6 responses
back if it is not in the replica set.
Hope that answers your question.
Hi,
I was hoping someone could clarify a point about multi-DC replication.
Let's say I have 2 data centers configured with replication factor = 3 in
each DC.
My client app is sitting in DC 1 and is able to intelligently pick a
coordinator that will also be a replica partner.
So the client app s
