If you’ve repaired at the point you alter keyspace to add the third DC, and you write with quorum, and your RF per DC is the same (for example, 3 in each DC), then you’ll likely get valid read requests, as long as none of the other nodes go down while you rebuild.
There are a lot of IFs and ANDs in that statement. Be sure you hit ALL of them or you may miss data on reads. From: laxmikanth sadula <laxmikanth...@gmail.com> Reply-To: "user@cassandra.apache.org" <user@cassandra.apache.org> Date: Saturday, August 27, 2016 at 9:45 AM To: "user@cassandra.apache.org" <user@cassandra.apache.org> Subject: New data center to an existing cassandra cluster 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 rebuild' , will the queries to tables in this keyspace will have any issue ? Thanks in advance. -- Regards, Laxmikanth
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