Hi,
I'm going to add a new data center DC3 to an existing cassandra cluster
which has already 2 data centers DC1 , DC2.
The thing I'm worried of is about tables in one keyspace which has QUORUM
reads and NOT LOCAL_QUORUM.
So while adding a new data centers with auto_bootstrap:false and 'nodetool
Yes, it will have issue during the time new nodes are building
So it is always advised to use LOCAL_QUORUM instead of QUORUM and LOCAL_ONE
instead of ONE
On 27 August 2016 at 09:45, laxmikanth sadula
wrote:
> Hi,
>
> I'm going to add a new data center DC3 to an existing cassandra cluster
> w
Reads at quorum in dc3 will involve dc1 and dc2 as they will require a
response from more than half the replicas throughout the Cluster.
If you're using RF=3 in each DC, each read will need at least 5 responses,
which DC3 cannot provide on its own.
You can have troubles if DC3 has more than half
ANDs in that statement. Be sure you hit ALL of them
or you may miss data on reads.
From: laxmikanth sadula
Reply-To: "user@cassandra.apache.org"
Date: Saturday, August 27, 2016 at 9:45 AM
To: "user@cassandra.apache.org"
Subject: New data center to an existing cass
Yes , RF=3 in existing datacenters DC1 & DC2 and going to be same RF in
new datacenter DC3 which I'm going to add.
On Sat, Aug 27, 2016 at 11:15 PM, Alexander DEJANOVSKI <
adejanov...@gmail.com> wrote:
> Reads at quorum in dc3 will involve dc1 and dc2 as they will require a
> response from more
