Andrew From created CASSANDRA-10898:
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Summary: Migrate Compaction Strategy Node by Node
Key: CASSANDRA-10898
URL: https://issues.apache.org/jira/browse/CASSANDRA-10898
Project: Cassandra
Issue Type: Wish
Components: Compaction, Tools
Reporter: Andrew From
It would be a great feature to be able to slowly change the compaction strategy
of a ColumnFamily node-by-node instead of cluster wide. Currently if you change
it cluster wide there's no good way to predict how long it will take. Thus the
process could run for days while you still need the live data, but the cluster
responds much more slowly due to the compaction strategy migration.
I stumbled across
http://blog.alteroot.org/articles/2015-04-20/change-cassandra-compaction-strategy-on-production-cluster.html
which gave me the idea. I was thinking this would be a nice feature to add to
NodeTool, provided that the strategy in the blog is sound I wouldn't mind going
ahead with the dev work to automate it. If not I would love to hear other ideas
on how to best make this happen.
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