While upgrading our QA solr 6.1 solrclouds to Solr 7.2.0 I discovered that some of our index folders for a replica had directory names like index.20170830071504690
These replicas also had a file index.properties which indicates which index directory is current. We don't see this configuration in our Dev solrclouds, nor Why would we have these folders in solrcloud indexes? What configuration controls this behavior? Is it normal for solrcloud? -- This message and any attachment are confidential and may be privileged or otherwise protected from disclosure. If you are not the intended recipient, you must not copy this message or attachment or disclose the contents to any other person. If you have received this transmission in error, please notify the sender immediately and delete the message and any attachment from your system. Merck KGaA, Darmstadt, Germany and any of its subsidiaries do not accept liability for any omissions or errors in this message which may arise as a result of E-Mail-transmission or for damages resulting from any unauthorized changes of the content of this message and any attachment thereto. Merck KGaA, Darmstadt, Germany and any of its subsidiaries do not guarantee that this message is free of viruses and does not accept liability for any damages caused by any virus transmitted therewith. Click http://www.emdgroup.com/disclaimer to access the German, French, Spanish and Portuguese versions of this disclaimer.