Thank you all for your assistance. I has been very helpful. I have few more questions:
1. If we change the write/delete consistency level to ALL, do we eliminate the data inconsistency among nodes (since the delete operations will apply to ALL replicas)? 2. My understanding is that "Read Repair" doesn't handle tombstones. How about "Node Tool Repair" (do we still see inconsistent data among nodes after running "Node Tool Repair")? Thanks, Vram On Mon, Jan 10, 2011 at 2:22 PM, Peter Schuller <peter.schul...@infidyne.com> wrote: >> Short version: Once GCGraceSeconds expires, the tombstone is no longer >> relevant as will not be included in RR (otherwise, you could have >> nodes that haven't compacted yet, RR tombstones to other replicas that >> had removed it). Long version: see my last comment on >> https://issues.apache.org/jira/browse/CASSANDRA-1316. > > Subtle, indeed. > > I've attempted to document this here: > > http://wiki.apache.org/cassandra/Operations#Frequency_of_nodetool_repair > http://wiki.apache.org/cassandra/Operations#Dealing_with_the_consequences_of_nodetool_repair_not_running_within_GCGraceSeconds > > -- > / Peter Schuller >
