This is link gives me 404, can you please give me the correct link? On Sat, May 13, 2017 at 10:51 AM, Surbhi Gupta <surbhi.gupt...@gmail.com> wrote:
> 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 >>> >>> >>> >>> >>> >>> >>> >>> >> >> >>
