>From "Cassandra the definitive guide" - Basic Maintenance - Repair "Running nodetool repair causes Cassandra to execute a major compaction..... During a major compaction (see “Compaction” in the Glossary), the server initiates a TreeRequest/TreeReponse conversation to exchange Merkle trees with neighboring nodes."
So is this text from the book misleading ? On Fri, Jul 8, 2011 at 10:36 AM, Jonathan Ellis <jbel...@gmail.com> wrote: > that's an internal term meaning "background i/o," not sstable merging per se. > > On Fri, Jul 8, 2011 at 9:24 AM, A J <s5a...@gmail.com> wrote: >> I think node repair involves some compaction too. See the issue: >> https://issues.apache.org/jira/browse/CASSANDRA-2811 >> It talks of 'validation compaction' being triggered concurrently >> during node repair. >> >> On Thu, Jun 30, 2011 at 8:51 PM, Watanabe Maki <watanabe.m...@gmail.com> >> wrote: >>> Repair doesn't compact. Those are different processes already. >>> >>> maki >>> >>> >>> On 2011/07/01, at 7:21, A J <s5a...@gmail.com> wrote: >>> >>>> Thanks all ! >>>> In other words, I think it is safe to say that a node as a whole can >>>> be made consistent only on 'nodetool repair'. >>>> >>>> Has there been enough interest in providing anti-entropy without >>>> compaction as a separate operation (nodetool repair does both) ? >>>> >>>> >>>> On Thu, Jun 30, 2011 at 5:27 PM, Jonathan Ellis <jbel...@gmail.com> wrote: >>>>> On Thu, Jun 30, 2011 at 3:47 PM, Edward Capriolo <edlinuxg...@gmail.com> >>>>> wrote: >>>>>> Read repair does NOT repair tombstones. >>>>> >>>>> It does, but you can't rely on RR to repair _all_ tombstones, because >>>>> RR only happens if the row in question is requested by a client. >>>>> >>>>> -- >>>>> Jonathan Ellis >>>>> Project Chair, Apache Cassandra >>>>> co-founder of DataStax, the source for professional Cassandra support >>>>> http://www.datastax.com >>>>> >>> >> > > > > -- > Jonathan Ellis > Project Chair, Apache Cassandra > co-founder of DataStax, the source for professional Cassandra support > http://www.datastax.com >
