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https://issues.apache.org/jira/browse/SOLR-13427?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrzej Bialecki updated SOLR-13427:
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Attachment: SOLR-13427.patch
> Support simulating the execution of autoscaling suggestion
> ----------------------------------------------------------
>
> Key: SOLR-13427
> URL: https://issues.apache.org/jira/browse/SOLR-13427
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Components: AutoScaling
> Reporter: Andrzej Bialecki
> Assignee: Andrzej Bialecki
> Priority: Major
> Fix For: master (9.0)
>
> Attachments: SOLR-13427.patch
>
>
> It's not always clear what would be the final state of the cluster after
> applying the suggested changes (obtained from {{/autoscaling/suggestions}}),
> especially on a large and busy cluster where several autoscaling rules have
> to be considered.
> This issue proposes to use the simulation framework for simulating the
> effects of the suggestions.
> First, the simulator would be initialized from the current state of a real
> cluster. Then it would run several rounds of simulated execution of
> suggestions until there were either no more suggestions (the cluster would be
> perfectly balanced) or the iteration count limit was reached.
> This simulation could be executed using either the deployed autoscaling
> config or one provided by the user, which would make it easier to test the
> effects of various configurations on the cluster layout.
> Support for this functionality would be integrated into the existing
> {{SolrCLI autoscaling}} tool.
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