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https://issues.apache.org/jira/browse/SOLR-11985?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Noble Paul reassigned SOLR-11985:
---------------------------------
Assignee: Noble Paul
> Allow percentage in replica attribute in policy
> -----------------------------------------------
>
> Key: SOLR-11985
> URL: https://issues.apache.org/jira/browse/SOLR-11985
> Project: Solr
> Issue Type: Sub-task
> Security Level: Public(Default Security Level. Issues are Public)
> Components: AutoScaling, SolrCloud
> Reporter: Shalin Shekhar Mangar
> Assignee: Noble Paul
> Priority: Major
> Fix For: 7.4, master (8.0)
>
>
> Today we can only specify an absolute number in the 'replica' attribute in
> the policy rules. It'd be useful to write a percentage value to make certain
> use-cases easier. For example:
> {code}
> // Keep a third of the the replicas of each shard in east region
> {"replica" : "<34%", "shard" : "#EACH", "sysprop:region": "east"}
> // Keep two thirds of the the replicas of each shard in west region
> {"replica" : "<67%", "shard" : "#EACH", "sysprop:region": "west"}
> {code}
> Today the above must be represented by different rules for each collection if
> they have different replication factors. Also if the replication factor
> changes later, the absolute value has to be changed in tandem. So expressing
> a percentage removes both of these restrictions.
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