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From David Whitmore <>
Subject RE: Hadoop Backup and Archival Cluster
Date Wed, 10 Feb 2016 18:21:09 GMT
Yes, you can run a distcp to copy data from one cluster to another, also distcp has an option
to tell if it will delete files on the destination if they are NOT on the source.

From: Vivek Singh Raghuwanshi []
Sent: Wednesday, February 10, 2016 1:16 PM
Subject: Hadoop Backup and Archival Cluster

Hi Friends,

I am planning to setup a Hadoop Cluster (A) with Cluster replication (B). so that once data
is reached to Cluster A it will replicated to Cluster D. I am having one question if i delete
data from Cluster A on the basis of Time like one month old data is it also removed from Cluster
B. if yes how i can avoid this.

What i want to achieve.

1. Once data is reached to Cluster A it will automatically replicated to Cluster B.

2. After one year old data from Cluster A remove automatically but not from Cluster B.

3. If any one wants to run query on latest data Cluster A is available but for Older data
Cluster B is available.

ViVek Raghuwanshi
Mobile -+91-09595950504
Skype - vivek_raghuwanshi
IRC vivekraghuwanshi
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