I am facing an issue in 0.8.7 cluster - - I have two clusters in two DCs (rather one cross dc cluster) and two keyspaces. But i have only configured one keyspace to replicate data to the other DC and the other keyspace to not replicate over to the other DC. Basically this is the way i ran the keyspace creation - create keyspace K1 with placement_strategy='org.apache.cassandra.locator.SimpleStrategy' and strategy_options = [{replication_factor:1}]; create keyspace K2 with placement_strategy='org.apache.cassandra.locator.NetworkTopologyStrategy' and strategy_options = [{DC1:2, DC2:2}];
I had to do this because i expect that K1 will get a large volume of data and i do not want this wired over to the other DC. I am writing the data at CL=ONE and reading the data at CL=ONE. I am seeing an issue where sometimes i get the data and other times i do not see the data. Does anyone know what could be going on here? A second larger question is - i am migrating from 0.7.4 to 0.8.7 , i can see that there are large changes in the yaml file, but a specific question i had was - how do i configure disk_access_mode like it used to be in 0.7.4? One observation i have made is that some nodes of the cross dc cluster are at different system times. This is something to fix but could this be why data is sometimes retrieved and other times not? Or is there some other thing to it? Would appreciate a quick response.