Hi guys, Currently I am running a 2 nodes cloud of Solr 7.5, I already have a collection named A and it worked fine with 20GB index Data, while I want to create a collection named B and want to copy index data from A. So in Solr5.5, I just copy index folder from A and renamed to B. restart solr cluster, collection B will be register successfully to solr, and related data will be pushed to zookeeper(leader info etc). In Solr7.5, I assume because of https://issues.apache.org/jira/browse/SOLR-12066, index folder B will be deleted since no state.json info about collection B can be found in zookeeper,
So my question is what should I do If I want B can register to solr cluster successfully other than folder be deleted? I have tried to set legacyCloud to true, and B can be registered to Solr cloud successfully. collection B status data will be pushed into /clusterstate.json <http://10.58.91.47:8081/search/admin/zookeeper?detail=true&path=%2Fclusterstate.json> , I have to call MIGRATESTATEFORMAT first then remove legacyCloud or set it to false. So if they is any other solutions for this case? Looking forward your response. Thanks, Lyle
