It is possible that running the command to drop indexes could have deleted crawler and user data in Fess. When you drop an index, all the data stored in that index is permanently removed from Elasticsearch.
If your colleague dropped the index that contained the Fess crawler and user data, then that data would have been lost. However, if your colleague only dropped other indexes not related to Fess, then the crawler and user data should still be intact.
To check whether the crawler and user data is still available, you can log in to the Fess admin dashboard and look for any missing or incomplete information. If you find any issues with the data, you may need to restore it from a backup or try to recover it using Elasticsearch recovery tools.




