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Exercise 01.04: Add and Remove a Node to and from the Cluster
Step 5: Re-introduce the New Node to the Cluster
5) Once the additional node is Up and Normal (i.e., UN), make certain the node has all the
data by running repair. In the ds210-node3 window, run:
nodetool repair
Is it necessary to run nodetool repair?
as the command below has been executed in 1), re-introducing the new node should be like adding a new node.
sudo sh -c 'rm -rf /var/lib/cassandra/*'
Under normal circumstances, no. It isn't necessary to run a repair after bootstrapping a node.
However, the exercise is not a normal procedure for changing the topology of a cluster. It was intended to illustrate a specific scenario. Cheers!
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