Hi We are seeing READ REPAIRs happening, and my understanding is this Setup 2 DCs with lots of Nodes, Replication Factor = 3
1. Data written (on INSERT/UPDATE) 2. Data replicated by Cassandra, but will not finish before (4) below 3. Wait 80 ms on average 4. Data read again with QUORUM i.e asking for atleast 2 out of 3 nodes for result, and now ONE replies with inaccurate data 5. (4) triggers a READ REPAIR 6. The READ REPAIR now synchs to ALL nodes also in DC2 So my question is: Is it really possible that Cassandra within 80 ms is not able to replicate to all 3 nodes in DC1 ? -Tobias
