cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Ajay Garg <ajaygargn...@gmail.com>
Subject Re: Is replication possible with already existing data?
Date Sun, 11 Oct 2015 04:21:01 GMT
Thanks a ton Anuja for the help !!!

On Fri, Oct 9, 2015 at 12:38 PM, anuja jain <anujajain4@gmail.com> wrote:
> Hi Ajay,
>
>
> On Fri, Oct 9, 2015 at 9:00 AM, Ajay Garg <ajaygargnsit@gmail.com> wrote:
>>
> In this case, it will be the responsibility of APP1 to start connection to
> CAS12. On the other hand if your APP1 is connecting to cassandra using Java
> driver, you can add multiple contact points(CAS11 and CAS12 here) so that if
> CAS11 is down it will directly connect to CAS12.

Great .. Java-driver it will be :)




>>
> In such a case, CAS12 will store hints for the data to be stored on CAS11
> (the tokens of which lies within the range of tokens CAS11 holds)  and
> whenever CAS11 is up again, the hints will be transferred to it and the data
> will be distributed evenly.
>

Evenly?

Should not the data be """EXACTLY""" equal after CAS11 comes back up
and the sync/transfer/whatever happens?
After all, before CAS11 went down, CAS11 and CAS12 were replicating all data.


Once again, thanks for your help.
I will be even more grateful if you would help me clear the lingering
doubt to second point.


Thanks and Regards,
Ajay

Mime
View raw message