Below link has the method u r looking for http://datascale.io/cloning-cassandra-clusters-fast-way/
On Sat, May 13, 2017 at 9:49 AM srinivasarao daruna <sree.srin...@gmail.com> wrote: > I am using vnodes. Is there a documenation that you can suggest to > understand how to assign same tokens in new cluster.? I will try it again. > > > On May 13, 2017 12:32 PM, "Nitan Kainth" <ni...@bamlabs.com> wrote: > > As Jonathan mentioned, if you are using vnodes , you should back up > nodetool output and assign same token to nodes and then copy corresponding > sstables. > > If using, initial token, then assign same value for subsequent node. > > Sstable loader should work independently, not sure why you are getting > wrong counts for that > > Sent from my iPhone > > On May 13, 2017, at 9:34 AM, Jonathan Haddad <j...@jonhaddad.com> wrote: > > Did you create the nodes with the same tokens? > > On Sat, May 13, 2017 at 8:44 AM srinivasarao daruna < > sree.srin...@gmail.com> wrote: > >> Hi, >> >> We have a cassandra cluster built on Apache Cassandra 3.9 with 6 nodes >> and RF = 3. As part of re-building the cluster, we are testing the backup >> and restore strategy. >> >> We took the snapshot and uploaded the files to S3 and data has been saved >> the data with folder names (backup_folder1 - 6 for nodes 1 - 6). >> Created a new cluster with the same number of nodes, and copied the data >> from S3 and created the schema. >> >> *Strategy 1: (using nodetool refresh)* >> 1) Copied back the data from S3 into one machine each based on the >> folders created (backup_folder1 - 6 to 6 nodes) >> 2) and performed nodetool refresh on the cluster. >> >> Ran the count: >> >> Count on previous cluster: 12125800 >> Count on new cluster: 10504780 >> >> *Strategy 2: using sstableloader* >> >> 1) Copied back the data from S3 into one machine each based on the >> folders created (backup_folder1 - 6 to 6 nodes) >> 2) and performed sstableloader on each node. >> >> Ran the count: >> >> Count on previous cluster: 12125800 >> Count on new cluster: 11705084 >> >> >> Looking at the results, i have bit disappointed that neither of the >> approach resulted 100% restore for me. >> If there is an error in taking the backup, it should have not given >> different counts. >> >> Any ideas on successful back-up and restore strategies.? and what could >> ve gone wrong in my process.? >> >> Thank You, >> Regards, >> Srini >> >> >> >> >> >> >> >> > > >
