All shards failed

Question

I was working on elastic search and it was working perfectly. Today I just restarted my remote server (Ubuntu). Now I am searching in my indexes, it is giving me this error.

Answer 1

If you encounter this apparent index corruption in a running system, you can work around it by deleting all files called segments.gen. It is advisory only, and Lucene can recover correctly without it.

From ElasticSearch Blog