[GitHub] [lucene-solr] gus-asf commented on a change in pull request #1716: SOLR-14706: Fix support for default autoscaling policy

[GitBox <gi...@apache.org>]

gus-asf commented on a change in pull request #1716:
URL: https://github.com/apache/lucene-solr/pull/1716#discussion_r465461582



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File path: solr/solr-ref-guide/src/solr-upgrade-notes.adoc
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@@ -34,17 +34,24 @@ Detailed steps for upgrading a Solr cluster are in the section <<upgrading-a-sol
 
 If you are upgrading from 7.x, see the section <<Upgrading from 7.x Releases>> below.
 
-=== Solr 8.6.1
+=== Solr 8.6.1 (Upgrading from 8.6.0 only)
 
 *Autoscaling*
 
 * As mentioned in the 8.6 upgrade notes, a default autoscaling policy was provided starting in 8.6.0.
 This default autoscaling policy resulted in increasingly slow collection creation calls in large clusters (50+ collections).
 +
 In 8.6.1 the default autoscaling policy has been removed, and clouds will not use autoscaling unless a policy has explicitly been created.
-In order to fix the performance degradations introduced in 8.6.0, merely upgrade to 8.6.1.
+If your cloud has been upgraded to 8.6.0 and you wish to fix this performance degredations, upgrade to 8.6.1 and remove the default cluster policy via the following command.
+Replace `localhost:8983` with your Solr endpoint.
++
+```
+curl -X POST -H 'Content-type:application/json'  -d '{set-cluster-policy : []}' http://localhost:8983/api/cluster/autoscaling

Review comment:
       The other caveat is probably that they shouldn't run this command if they have been actively using autoscaling before they upgraded to 8.6.0




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