Only if your clusters have the same number of nodes, with the same tokens. Trying to get too clever is not usually advisable.
On Thu, Jun 10, 2010 at 3:54 AM, xavier manach <x...@tekio.org> wrote: > Hi. > > I try to understand tricks that I can use with the SSTables, for > faster manipulation of datas in clusters. > > I learn I how copy a keyspaces from data directories to a new node and > change replicationfactor (thx Jonathan). > > If I understood, Each SSTable have 3 files : > ColumnFamily-ID-Datas.db > ColumnFamily-ID-Index.db > ColumnFamily-ID-Filter.db > > If I want merge datas from 2 clusters, with differents keys (each > key is only in one cluster) but with the same ColumnFamily. > Can I copy all the files from SSTables with the same methode ? >> 1. nodetool drain & stop original node >> 2. copy everything ***files sstables*** in data/ directories (but not >> system keyspace!) to new node >> 3. restart and autobootstrap=false [the default] > > Thx. > > > > On Tue, Jun 8, 2010 at 7:12 AM, xavier manach <x...@tekio.org> wrote: >> Hi. >> >> I have a cluster with only 1 node with a lot of datas (500 Go) . >> I want add a new node with the same datas (with a ReplicationFactor >> 2) >> >> The method normal is : >> stop node. >> add a node. >> change replication factor to 2. >> start nodes >> use nodetool repair >> >> But , I didn't know if this other method is valid, and if it's can >> be faster : >> stop nodes. >> copy all SSTables >> change replication factor. >> start nodes >> and >> use nodetool repair >> >> Have you an idea for the faster valid method ? >> >> Thx. >> > -- Jonathan Ellis Project Chair, Apache Cassandra co-founder of Riptano, the source for professional Cassandra support http://riptano.com
