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From "Cassandra Targett (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-12511) Support non integer values for replica in autoscaling rules
Date Mon, 01 Oct 2018 16:59:00 GMT

    [ https://issues.apache.org/jira/browse/SOLR-12511?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16634319#comment-16634319
] 

Cassandra Targett commented on SOLR-12511:
------------------------------------------

[~noble.paul], Shouldn't this be resolved and marked as fixed in 7.5?

> Support non integer values for replica in autoscaling rules
> -----------------------------------------------------------
>
>                 Key: SOLR-12511
>                 URL: https://issues.apache.org/jira/browse/SOLR-12511
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: AutoScaling
>            Reporter: Noble Paul
>            Assignee: Noble Paul
>            Priority: Major
>
> This means the user can configure a decimal value in replica
> example :
> {code:json}
> {"replica": 1.638, "node":"#ANY"}
> {code}
> This means a few things. The no:of of replicas in a node can be either 2 or 1. This also
means that violations are calculated as follows
>  * If the replica count is 1 or 2 there are no violations 
>  * If the replica count is 3, there is a violation and the delta is *{{3-1.638 = 1.362}}*
>  * if the replica count is 0, there is a violation and the delta is *{{1.638 - 0 = 1.638}}*
>  * This also means that the node with zero replicas has a *more serious* violation and
the system would try to rectify that first before it address the node with 3 replicas



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