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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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Noble Paul updated SOLR-11990:
------------------------------
Description:
It is necessary to co-locate replicas of different collection together in a
node when cross-collection joins are performed.
while creating a collection specify the parameter
{{withCollection=other-collection-name}} . This ensure that Solr always ensure
that atleast one replica of {{other-cllection}} is present with this collection
replicas
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.
was:
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":">0", "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.
> 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: New Feature
> Security Level: Public(Default Security Level. Issues are Public)
> Components: AutoScaling, SolrCloud
> Reporter: Shalin Shekhar Mangar
> Assignee: Shalin Shekhar Mangar
> Priority: Major
> Fix For: master (8.0), 7.5
>
> Attachments: SOLR-11990.patch, SOLR-11990.patch, SOLR-11990.patch,
> SOLR-11990.patch, SOLR-11990.patch, SOLR-11990.patch
>
>
> It is necessary to co-locate replicas of different collection together in a
> node when cross-collection joins are performed.
> while creating a collection specify the parameter
> {{withCollection=other-collection-name}} . This ensure that Solr always
> ensure that atleast one replica of {{other-cllection}} is present with this
> collection replicas
> 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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