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Posted to user@cassandra.apache.org by Matthew Allen <ma...@gmail.com> on 2014/03/19 04:42:05 UTC
Multi-site Active-Active replication - Maintenance Commands
Hi all,
We currently run a script that runs the following on our separate clusters
each night. The script operates on 3 nodes (out of 9) a night to minimize
impact to the cluster.
repair -pr
compact
cleanup
These separate clusters are going to start replicating between each other
within a few weeks.
I (may) have (mis)read that when using multiple data-centers, that a
"repair", instead of a "repair -pr" should be used. I'm reluctant to do
this, as when we initially used to run a "repair", we would suffer hung
repairs and an increased load on the hosts due to multiple ranges being
repaired at the same time.
So going forward to a multi-dc cluster, we intend to run the following
-local repair -pr
compact
cleanup
Is there a definitive answer for this ?
Thanks
Matt