DataStax Academy FAQ

DataStax Academy migrated to a new learning management system (LMS) in July 2020. We are also moving to a new Cassandra Certification process so there are changes to exam bookings, voucher system and issuing of certificates.

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question

john.xi_136199 avatar image
john.xi_136199 asked Erick Ramirez answered

Is it necessary to run nodetool repair in DS210: Exercise 01.04 Step 5 ?

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/*'

ds210
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1 Answer

Erick Ramirez avatar image
Erick Ramirez answered

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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