Anubhav Kale created CASSANDRA-10936:
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Summary: Provide option to repair from a data center in "nodetool
repair"
Key: CASSANDRA-10936
URL: https://issues.apache.org/jira/browse/CASSANDRA-10936
Project: Cassandra
Issue Type: Improvement
Components: Tools
Environment: PROD
Reporter: Anubhav Kale
Priority: Minor
Sometimes, its known that the correct / latest data resides in a Data Center.
It would be useful if nodetool repair can provide a "Source DC" option to
source the data from. This will save a ton of traffic on the network.
There are some discussions around this in CASSANDRA-6552.
A case in point where this is handy: People may want to backup data from a
designated data center (so that only one copy of data is backed up) to remote
storage (azure / AWS). At restore time once the data is restored to this DC,
other data centers can "source" data from this through "nodetool repair --
source Foo".
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