I have created a Solr CoreAdminHandler extension with the goal to swap two cores and remove the old one.
My code looks like this: SolrCore core = coreContainer.create("newcore", coreProps) coreContainer.swap("newcore", "livecore") // the old livecore is now newcore, so unload it and remove all the related dirs coreContainer.unload("newcore", true, true, true) After the last statement get executed the Solr log starts printing the following messages forever 61424 INFO (pool-1-thread-1) [ x:newcore] o.a.s.c.SolrCore Core newcore is not yet closed, waiting 100 ms before checking again. I tried to call the close() method on the SolrCore instance before and after the unload but the result is the same. I opened an issue on the problem ( https://issues.apache.org/jira/browse/SOLR-8757) but the jira has not been acknowledged yet. I'd like to know if my code is wrong or is a Solr bug. In case of a bug it would be nice to have a workaround. Thanks