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https://issues.apache.org/jira/browse/SOLR-12845?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17165144#comment-17165144
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Varun Thacker commented on SOLR-12845:
--------------------------------------
Hi Houston,
Can you post the results of the test you ran with Ishan's script ? Like AB
mentioned on Slack, why was master faster below 80 collections . Wondering if
you also got similar results.
> Have we agreed to revert this commit on 8_6 and 8x?
AB also mentioned that we should remove these rules. I agree with that given
the fact that the autoscaling framework is going away ( SOLR-14656 )
> 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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