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https://issues.apache.org/jira/browse/SOLR-11990?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shalin Shekhar Mangar updated SOLR-11990:
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Attachment: SOLR-11990.patch
> Make it possible to co-locate replicas of multiple collections together in a
> node using policy
> ----------------------------------------------------------------------------------------------
>
> Key: SOLR-11990
> URL: https://issues.apache.org/jira/browse/SOLR-11990
> Project: Solr
> Issue Type: Sub-task
> Security Level: Public(Default Security Level. Issues are Public)
> Components: AutoScaling, SolrCloud
> Reporter: Shalin Shekhar Mangar
> Assignee: Shalin Shekhar Mangar
> Priority: Major
> Fix For: 7.4, master (8.0)
>
> Attachments: SOLR-11990.patch
>
>
> It is necessary to co-locate replicas of different collection together in a
> node when cross-collection joins are performed. The policy rules framework
> should support this use-case.
> Example: Co-locate exactly 1 replica of collection A in each node where a
> replica of collection B is present.
> {code}
> {"replica":1, "collection":"A", "shard":"#EACH", "withCollection":"B"}
> {code}
> This requires changing create collection, create shard and add replica APIs
> as well because we want a replica of collection A to be created first before
> a replica of collection B is created so that join queries etc are always
> possible.
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