[jira] [Commented] (SOLR-13155) CLI tool for testing autoscaling suggestions against a live cluster

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[jira] [Commented] (SOLR-13155) CLI tool for testing autoscaling suggestions against a live cluster

JIRA jira@apache.org

    [ https://issues.apache.org/jira/browse/SOLR-13155?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16765090#comment-16765090 ]

Andrzej Bialecki  commented on SOLR-13155:
------------------------------------------

This patch adds more options:
* dump the ClusterState
* dump the aggregated collection and node statistics.

If there are no objections I'm going to commit this, and I'll create a separate issue for hooking this up to the Windows script.

> CLI tool for testing autoscaling suggestions against a live cluster
> -------------------------------------------------------------------
>
>                 Key: SOLR-13155
>                 URL: https://issues.apache.org/jira/browse/SOLR-13155
>             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: 8.0, master (9.0)
>
>         Attachments: SOLR-13155.patch, SOLR-13155.patch, SOLR-13155.patch
>
>
> Solr already provides /autoscaling/diagnostics and /autoscaling/suggestions endpoints. In some situations it would be very helpful to be able to run "what if" scenarios using data about nodes and replicas taken from a production cluster but with a different autoscaling policy than the one that is deployed, without also worrying that the calculations would negatively impact a production cluster's Overseer leader.
> All necessary classes (including the Policy engine) are self-contained in the SolrJ component, so it's just a matter of packaging and writing a CLI tool + a wrapper script.



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