Shalin Shekhar Mangar created SOLR-12846:
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Summary: Policy rules do not support host variable
Key: SOLR-12846
URL: https://issues.apache.org/jira/browse/SOLR-12846
Project: Solr
Issue Type: Bug
Security Level: Public (Default Security Level. Issues are Public)
Components: AutoScaling
Affects Versions: 7.5
Reporter: Shalin Shekhar Mangar
Fix For: 7.6, master (8.0)
The policy documentation says that there is a host variable supported in policy
rules at
https://lucene.apache.org/solr/guide/7_5/solrcloud-autoscaling-policy-preferences.html#node-selection-attributes
But there is no mention of it in the code. Perhaps it got lost during
refactorings and there were no tests for it? In any case, we should add it
back. It'd be great if we can support #EACH for host so that one can write a
rule to distribute replicas across hosts and not just nodes. This would be very
useful when one runs multiple Solr JVMs in the same physical node.
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