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

["Shalin Shekhar Mangar (JIRA)" <ji...@apache.org>]

Shalin Shekhar Mangar created SOLR-12845:
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             Summary: Add a default cluster policy
                 Key: SOLR-12845
                 URL: https://issues.apache.org/jira/browse/SOLR-12845
             Project: Solr
          Issue Type: Improvement
      Security Level: Public (Default Security Level. Issues are Public)
            Reporter: Shalin Shekhar Mangar


[~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 collections replicas should be equally distributed amongst nodes
{"replica": "#EQUAL", "node": "#ANY"} 
# All cores should be equally distributed amongst nodes
{"cores": "#EQUAL", "node": "#ANY"}
# Each shard cannot have more than one replica on the same node if possible
{"replica": "<2", "shard": "#EACH", "node": "#ANY", "strict":false}
{code}



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