12-node cluster mystery

Dear all, I've just fired up our production cluster : 12 nodes, RF=3 and I've run into something I don't understand at all. Our test cluster was 3 nodes, RF=3 Test cluster was AMD opteron CPUs (6x2.33) w/ 32GB RAM while the production cluster is core i5 (4x2.66) w/ 16 GB RAM. I'm running the same

Existing column(s) not readable

Hi, we are running a 3 node cassandra (0.7.6-2) cluster and some of our column families contain quite large rows (400k+ columns, 4-6GB row size). Replicaton factor is 3 for all keyspaces. The cluster is running fine for several months now and we never experienced any serious trouble. Some days ag

Re:invalid shard name encountered

i have a question about "commitlog_sync"

hi,all: i have a question about the option "commitlog_sync" in cassandra.yaml file.when its value is set to "batch",the ICommitLogExecutorService instance of CommitLog will be BatchCommitLogExecutorService in which there is a method named processWithSyncBatch.and in this method,there is a code