I wish to have a Hadoop cluster with DR (Disaster Recovery), for which I need to have the data backup at a geographically different location. (if there's an eqrthquake or tsunami that hits one location).
I was thinking along these lines - Make Hadoop rack-aware, set a replication factor of 4, and have geographically separated nodes under a single Hadoop namespace, and make sure that atleast one replica gets copied to the other data centre. Basically, I want to have an Active-Active kind of a setup. Is this a feasible idea? If not, why? Assume that bandwidth is not a limitation - I can have unlimited bandwidth - DR is the primary concern - data just cannot be lost. If this idea is not good, what is the best way to have an Active-Active DR Hadoop setup? This question may not be PIG related, but I thought folks here can suggest some good ideas. I am posting the same question on the Hadoop General mailing list also. Please do not print this email unless it is absolutely necessary. The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments. WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. www.wipro.com
