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@@ -65,6 +65,7 @@ Ambari Infra Solr uses Solr 7 from Ambari 2.7.0, therefore it is required migrat
- Upgrade Ambari server
- Make sure Solrs are up and running
- Do NOT restart Infra Solr after Ambari server upgrade (if you do, see [this](#if-solr-restarted))
- There will be a small time window between backup collections and deleting collections - Ranger plugins will operate during that time, that means you can loose data during that time period. If that means a big problem in order to avoid that, you can enable to auudit to HDFS for that time.