We recently have had a few occasions when cores for one specific collection were renamed (or more likely dropped and recreated, and thus ended up with a different core name).
Is this a known phenomenon? Is there any explanation? It may be relevant that we just recently started running this SolrCloud on version 8.5.2, although the collection was created under Solr7.4. Also, this collection seems to experience some heavy updates such that the non-Leader replica has trouble keeping up. One of these renames occurred at 4:33am, so I highly suspect that the rename (or drop and recreate) was done by some internal Solr thread rather than by any of my coworkers. One other potential clue is that I can see that /solr/admin/cores?action=REQUESTRECOVERY was usually run on the new core a moment after it was created. Does anyone have any insights?
