Why dont you use nodetool rebuild ? On 21 April 2016 at 09:16, Jan <cne...@yahoo.com> wrote:
> Jens; > > I am unsure that you need to enable Replication & also use the sstable > loader. > You could load the data into the new DC and susbsequently alter the > keyspace to replicate from the older DC. > > Cheers > Jan > > > -------------------------------------------- > On Thu, 4/21/16, Jens Rantil <jens.ran...@tink.se> wrote: > > Subject: Re: Alternative approach to setting up new DC > To: user@cassandra.apache.org > Date: Thursday, April 21, 2016, 9:00 AM > > Hi, > I never got > any response here, but just wanted to share that I went to a > Cassandra meet-up in Stockholm yesterday where I talked to > two knowledgable Cassandra people that verified that the > approach below should work. The most important thing is that > the backup must be fully imported before gc_grace_seconds > after when the backup is taken. > As of me, I managed to a get a more > stable VPN setup and did not have to go down this > path. > Cheers,Jens > > On Mon, Apr > 18, 2016 at 10:15 AM Jens Rantil <jens.ran...@tink.se> > wrote: > Hi, > I am > provisioning a new datacenter for an existing cluster. A > rather shaky VPN connection is hindering me from making a > "nodetool rebuild" bootstrap on the new DC. > Interestingly, I have a full fresh database snapshot/backup > at the same location as the new DC (transferred outside of > the VPN). I am now considering the following > approach:Make > sure my clients are using the old DC. > Provision the new nodes in new > DC. > ALTER the keyspace to enable > replicas on the new DC. This will start replicating all > writes from old DC to new DC. > Before > gc_grace_seconds after operation 3) above, use sstableloader > to stream my backup to the new nodes. > For > safety precaution, do a full repair. > Could you see any issues with > doing this? > Cheers,Jens-- > > > > > > > > > Jens Rantil > Backend Developer @ Tink > Tink AB, Wallingatan 5, 111 60 Stockholm, Sweden > For urgent matters you can reach me at > +46-708-84 18 > 32.-- > > > > > > > > > Jens Rantil > Backend Developer @ Tink > Tink AB, Wallingatan 5, 111 60 > Stockholm, Sweden > For urgent matters you can > reach me at +46-708-84 18 32. >
