HoustonPutman commented on a change in pull request #1716: URL: https://github.com/apache/lucene-solr/pull/1716#discussion_r466643442
########## File path: solr/solr-ref-guide/src/solr-upgrade-notes.adoc ########## @@ -34,17 +34,29 @@ 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) + +See the https://cwiki.apache.org/confluence/display/SOLR/ReleaseNote861[8.6.1 Release Notes^] +for an overview of the fixes included in Solr 8.6.1. + +When upgrading to 8.6.1 users should be aware of the following major changes from 8.6.0. *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 is running 8.6.0 and **not using an explicit autoscaling policy**, upgrade to 8.6.1 and remove the default cluster policy and preferences via the following command. +Replace `localhost:8983` with your Solr endpoint. ++ +``` +curl -X POST -H 'Content-type:application/json' -d '{set-cluster-policy : [], set-cluster-preferences : []}' http://localhost:8983/api/cluster/autoscaling Review comment: Hmmm, I'm a bit confused about that. So if I spin up a new cloud with 8.5, I don't see a `cluster-preferences`. It basically looks the same as a 8.6.1 cloud that has the above command run. So if we reverted the change of the defaulting patch, shouldn't a 8.5 cloud and 8.6.1 cloud with identical `autoscaling.json` ZNodes behave the same? ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org For additional commands, e-mail: issues-h...@lucene.apache.org
