My application vitess database is having more than 20M records in a single table. I have a cronJob which is scheduled every morning to take database backup to S3 from Vitess kubernetes pod.

But for smaller size database it is working perfectly and now my database size is increased and now it has more than 20M rows and database backup is failing everytime.

My vitess kubernetes pod showing error - "rpc error: code = Unavailable desc = transport is closing".

I have applied "grpc_keepalive_time" & "grpc_keepalive_timeout" but both didn't working.

Anyone facing same issue?