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List:       cassandra-user
Subject:    changing replication strategy and effects on replica nodes
From:       Jonathan Colby <jonathan.colby () gmail ! com>
Date:       2011-03-31 15:04:20
Message-ID: D69E96B9-C039-42A2-8809-C103B463D8E6 () gmail ! com
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From my understanding of replica copies,  cassandra picks which nodes to replicate \
the data based on replication strategy, and those same "replica partner" nodes are \
always used according to token ring distribution.

If you change the replication strategy,  does cassandra pick new nodes to replicate \
to?   (for example if you went from simple strategy to a networkTopology strategy \
where copies are to be sent to another datacenter)

If so,  do you now have unused replica data on the "old" replica nodes that you need \
to clean up manually?


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