Re: Data migration between clusters

2012-11-01 Thread 張 睿
Hi Rob, Thank you for your reply. Our scenario is like this, we have 3 clusters, each has 1 or 2 keyspaces in it, and each cluster has 3 nodes. Now we're considering integrating these 3 clusters of 9 nodes to a single cluster of 9 nodes. This new cluster will contain all keyspaces and their da

Re: Data migration between clusters

2012-10-31 Thread Rob Coli
On Tue, Oct 30, 2012 at 4:18 AM, 張 睿 wrote: > Does anyone here know if there is an efficient way to migrate multiple > cassandra clusters' data > to a single cassandra cluster without any dataloss. Yes. 1) create schema which is superset of all columnfamilies and all keyspaces 2) if all source c

Data migration between clusters

2012-10-30 Thread 張 睿
Hi, We have several Cassandra clusters in our department, each for a single application. Now we're considering merge these clusters to a single one, and this single one will serve all applications using cassandra, each with a single keyspace. We tried unifying all cluster names to a same one, but