Anshum Gupta created SOLR-9735:
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             Summary: Umbrella JIRA for Cluster Management framework in 
SolrCloud
                 Key: SOLR-9735
                 URL: https://issues.apache.org/jira/browse/SOLR-9735
             Project: Solr
          Issue Type: New Feature
      Security Level: Public (Default Security Level. Issues are Public)
            Reporter: Anshum Gupta


As SolrCloud is now used at fairly large scale, most users end up writing their 
own cluster management tools. We should have a framework for cluster management 
in Solr.
In a discussion with [~noble.paul], we outlined the following steps w.r.t. the 
approach to having this implemented:
* *Basic API* calls for cluster management e.g. utilize added nodes, remove a 
node etc. These calls would need explicit invocation by the users to begin with.
* *Metrics* and stats tracking e.g. qps, etc. These would be required for any 
advanced cluster management tasks e.g. *maintain a qps of 'x'* by *auto-adding 
a replica* (using a recipe) etc. We would need collection/shard/node level 
views of metrics for this.
* *Recipes*: combination of multiple sequential/parallel API calls based on 
rules.
* *Event based triggers* that would not require explicit cluster management 
calls for end users.



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