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Increasing the number of replicas on an already live cluster

If you used Solr before the release of the 4.0 version, you are probably familiar with replication. The way deployments usually worked is that there was a single master server and multiple slave servers that were pulling the index from the master server. In Solr 4.0, we don't have to worry about replication and pulling interval – it's done automatically. We can also set up our instances in a way to achieve a similar setup as that of multiple replicas of a single shard where data is stored. This recipe will show you how to do it.

Getting ready

If you are not familiar with setting up a SolrCloud cluster, please refer to the Creating a new SolrCloud cluster recipe in this chapter.

How to ...

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