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https://issues.apache.org/jira/browse/SOLR-12356?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16477233#comment-16477233
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Jan Høydahl commented on SOLR-12356:
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Does not the auto scaling framework allow us to create the collection with
desired replicationFactor of 2, and some fancy rules will make sure that the
2nd replica is created whenever a new node is added? Can we similarly create a
rule preventing that replica to land on a node sharing the same IP address as
the leader, then all is good :) I don't see any problems with Overseer making
sure this collection exists, even if it is empty?
> Always auto-create ".system" collection when in SolrCloud mode
> --------------------------------------------------------------
>
> Key: SOLR-12356
> URL: https://issues.apache.org/jira/browse/SOLR-12356
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Andrzej Bialecki
> Priority: Major
>
> The {{.system}} collection is currently used for blobs, and in SolrCloud mode
> it's also used for autoscaling history and as a metrics history store
> (SOLR-11779). It should be automatically created on Overseer start if it's
> missing.
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