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Posted to dev@lucene.apache.org by "Noble Paul (JIRA)" <ji...@apache.org> on 2018/07/27 02:39:00 UTC
[jira] [Resolved] (SOLR-12536) Enhance autoscaling policy to
equally distribute replicas on the basis of arbitrary properties
[ https://issues.apache.org/jira/browse/SOLR-12536?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Noble Paul resolved SOLR-12536.
-------------------------------
Resolution: Fixed
Fix Version/s: 7.5
master (8.0)
> Enhance autoscaling policy to equally distribute replicas on the basis of arbitrary properties
> ----------------------------------------------------------------------------------------------
>
> Key: SOLR-12536
> URL: https://issues.apache.org/jira/browse/SOLR-12536
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Components: AutoScaling
> Reporter: Noble Paul
> Assignee: Noble Paul
> Priority: Major
> Fix For: master (8.0), 7.5
>
>
> *example:1*
> {code:java}
> {"replica" : "#EQUAL" , "shard" : "#EACH" , "port" : "#EACH" }
> //if the ports are "8983", "7574", "7575", the above rule is equivalent to
> {"replica" : "#EQUAL" , "shard" : "#EACH" , "port" : ["8983", "7574", "7575"]}{code}
> *case 1*: {{numShards =2, replicationFactor=3}} . In this case all the nodes are divided into 3 buckets each containing nodes in that port. Each bucket must contain {{3 * 2 /3 =2}} replicas
>
> *example : 2*
> {code:java}
> {"replica" : "#EQUAL" , "shard" : "#EACH" , "sysprop.zone" : "#EACH" }
> //if the zones are "east_1", "east_2", "west_1", the above rule is equivalent to
> {"replica" : "#EQUAL" , "shard" : "#EACH" , "sysprop.zone" : ["east_1", "east_2", "west_1"]}{code}
> The behavior is similar to example 1 , just that in this case we apply it to a system property
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