Hi Solr Users, We recently upgraded Solr from 8.11.1 to 9.4.0 after which the restore from GCS functionality stopped working. Solr uses the GCSBackupRepository plugin to backup and restore Lucene segments. Prior to the upgrade both backup and restore operations were happening correctly. But post upgrade the backup happens to GCS but when we try to restore from the backup in GCS most of the shards get stuck after copying some files and after some time the solr container crashes. Interestingly the restore gets stuck after copying 129GB of files from GCS every time. Eventually solr logs show the following exception:
c.g.a.c.h.HttpTransport exception thrown while executing request java.net.UnknownHostException: oauth2.googleapis.com Solr 8 and Solr 9 restore code doesn't seem to change much. However, it looks that solr 8 was using google.cloud.storage 1.x and solr 9 moved to 2.x version of that library. Has anyone else run into this issue with solr backup and restore in GCP? Thanks, -- Shubhro Roy, Engineering Manager, Search & AI 900 Jefferson Ave Redwood City, CA 94063
