Depends. *nix systems have delete-on-close semantics, that is as long as there’s a single file handle open, the file will be still be available to the process using it. Only when the last file handle is closed will the file actually be deleted.
Solr (Lucene actually) has file handle open to every file in the index all the time. These files aren’t visible when you do a directory listing. So if you stop Solr, are the files gone? NOTE: When you start Solr again, if there are existing replicas that are healthy then the entire index should be copied from another replica…. Best, Erick > On Nov 9, 2020, at 3:30 AM, Amy Bai <a...@vmware.com> wrote: > > Hi community, > > I found that SolrCloud won't check the IO status if the SolrCloud process is > alive. > E.g. If I delete the SolrCloud data directory, there are no errors report, > and I can still log in to the SolrCloud Admin UI to create/query > collections. > Is this reasonable? > Can someone explain why SOLR handles it like this? > Thanks so much. > > > Regards, > Amy
