Updating Bucket Replicas from Zero to One

Couchbase Server
1

Hi Team,

Updating bucket replicas from zero to one requires running rebalance.

If we run rebalance outside business hours, will it affect applications performing DML operations on the bucket until rebalance completes, or can we run rebalance independently without issues?

Thanks,

Debasis

2

Refer to the documentation. Rebalance | Couchbase Docs
Rebalance can be done at anytime. If a vbucket has been moved from one node to another, and the SDK attempts to access a document on the node where it used to be - the node will return “Not My Vbucket”, the SDK will get the current vbucket map from the cluster and then access the correct node for the document.