Noble Paul created SOLR-12536:
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Summary: Enhance autoscaling policy to equally distribute replicas
on the basis of arbitrary properties
Key: SOLR-12536
URL: https://issues.apache.org/jira/browse/SOLR-12536
Project: Solr
Issue Type: Sub-task
Security Level: Public (Default Security Level. Issues are Public)
Reporter: Noble Paul
Assignee: Noble Paul
{code:java}
{"replica" : "#EQUAL" , "shard" : "#EACH" , "port" : "#EACH" }
//if the ports are "8983", "7574", "7575", the above rule is equivalent to
{"replica" : "<2" , "shard" : "#EACH" , "port" : ["8983", "7574",
"7575"]}{code}
*case 1*: {{numShards =2, replicationFactor=3}} . In this case all the nodes
are divided into 3 buckets each containing nodes in that port. Each bucket must
contain {{3 * 2 /3 =2}} replicas
{"replica" : "#EQUAL" , "sysprop.zone" : "#EACH"}
{code}
*case 1*: numShards = 3, replicationFactor=1, zones are : {{east}}, {{west}}
(total = 2)
this means each zone must have equal replicas . {{total replicas = 3 * 1 = 3}},
{{total zones = 2}} , {{replicas per zone = 3/2 = 1.5}}
{code:java}
{"replica" : "#EQUAL" , "shard" : "#EACH" , "sysprop.zone" : "#EACH" }
//if the zones are "east_1", "east_2", "west_1", the above rule is equivalent to
{"replica" : "<2" , "shard" : "#EACH" , "port" : ["east_1", "east_2",
"west_1"]}{code}
The behavior is equivalent to the above
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