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From Markus Jelsma <>
Subject Increased disk space usage 8.1.1 vs 7.7.1
Date Thu, 13 Jun 2019 10:19:28 GMT

We are upgrading to Solr 8. One of our reindexed collections takes a GB more than the production
uses which is on 7.7.1. Production also has deleted documents. This means Solr 8 somehow uses
more disk space. I have checked both Solr and Lucene's CHANGES but no ticket was immediately

Does anyone know what is going on?

Many thanks,

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