Shalin Shekhar Mangar created SOLR-11989:

             Summary: Make it possible to place a replica of a collection on 
all nodes satisfying a given property
                 Key: SOLR-11989
             Project: Solr
          Issue Type: Sub-task
      Security Level: Public (Default Security Level. Issues are Public)
          Components: AutoScaling, SolrCloud
            Reporter: Shalin Shekhar Mangar
             Fix For: master (8.0), 7.3

Today replicas are placed according to policy rules but there is no way to 
drive the number of replicas based on policy e.g.

Example 1: Put a replica of each shard of collection A on each node in the 
{"replica":">0", "node", "#ANY", "shard" : "#EACH", "collection" : "A"}
Example 2: Put a replica of each shard of collection A on every nodes with 
{"replica":">0", "sysprop.region", "east", "shard" : "#EACH", "collection" : 

The above two rules can be used to compute the replication factor of collection 
A but today the replicationFactor parameter passed in collection/shard creation 
neither takes the rule into account nor does it prevent conflicts. In fact, the 
replicationFactor should be omitted while creating collection A if the above 
rules are present.

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