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https://issues.apache.org/jira/browse/SOLR-5501?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13930494#comment-13930494
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Noble Paul commented on SOLR-5501:
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Yes. I would like it to be possible from ADDREPLICA as well as MODIFYCOLLECTION.
By default all replicas are hot. We do not wish to change the default behavior
anyway
> Ability to work with cold replicas
> ----------------------------------
>
> Key: SOLR-5501
> URL: https://issues.apache.org/jira/browse/SOLR-5501
> Project: Solr
> Issue Type: Improvement
> Components: SolrCloud
> Affects Versions: 4.5.1
> Reporter: Manuel Lenormand
> Labels: performance
> Fix For: 4.7
>
>
> Following this conversation from the mailing list:
> http://lucene.472066.n3.nabble.com/Proposal-for-new-feature-cold-replicas-brainstorming-td4097501.html
> Should give the ability to use replicas mainly as backup cores and not for
> handling high qps rate.
> This way you would avoid using the caching ressources (solr and OS) used when
> routing a query to a replica.
> With many replicas it's harder hitting the solr cache (same query may hit
> another replica) and having many replicas on the same instance would cause a
> useless competition on the OS memory for caching.
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