[jira] [Updated] (SOLR-12845) Add a default cluster policy

["Ishan Chattopadhyaya (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-12845?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ishan Chattopadhyaya updated SOLR-12845:
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    Attachment: Screenshot from 2020-07-18 21-07-34.png

> Add a default cluster policy
> ----------------------------
>
>                 Key: SOLR-12845
>                 URL: https://issues.apache.org/jira/browse/SOLR-12845
>             Project: Solr
>          Issue Type: Improvement
>          Components: AutoScaling
>            Reporter: Shalin Shekhar Mangar
>            Assignee: Andrzej Bialecki
>            Priority: Major
>             Fix For: 8.6
>
>         Attachments: SOLR-12845.patch, SOLR-12845.patch, Screenshot from 2020-07-18 21-07-34.png
>
>
> [~varunthacker] commented on SOLR-12739:
> bq. We should also ship with some default policies - "Don't allow more than one replica of a shard on the same JVM" , "Distribute cores across the cluster evenly" , "Distribute replicas per collection across the nodes"
> This issue is about adding these defaults. I propose the following as default cluster policy:
> {code}
> # Each shard cannot have more than one replica on the same node if possible
> {"replica": "<2", "shard": "#EACH", "node": "#ANY", "strict":false}
> # Each collections replicas should be equally distributed amongst nodes
> {"replica": "#EQUAL", "node": "#ANY", "strict":false} 
> # All cores should be equally distributed amongst nodes
> {"cores": "#EQUAL", "node": "#ANY", "strict":false}
> {code}



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