[jira] [Created] (SOLR-12907) Define a well known system property called rack for autoscaling policies

["Varun Thacker (JIRA)" <ji...@apache.org>]

Varun Thacker created SOLR-12907:
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             Summary: Define a well known system property called rack for autoscaling policies
                 Key: SOLR-12907
                 URL: https://issues.apache.org/jira/browse/SOLR-12907
             Project: Solr
          Issue Type: Improvement
      Security Level: Public (Default Security Level. Issues are Public)
            Reporter: Varun Thacker


I want to setup a rule like to the effect of - Each shard should have their replicas distributed equally amongst availability zones

For achieveing this today I can create a rule like this
{code:java}
{"replica": "#EQUAL", "shard": "#EACH", "sysprop.az": “#EACH”}{code}
And then make sure that every solr jvm starts up with a system property called "az"

Another user might call the same property "availability_zone" and for some it's just a different "rack"

All of them want to achieve the same goal of redundancy

So if we have a well kown property called "rack" it would help standardize documentation , examples given out during talks etc.



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