@deekshant To debug Namenode issue you need to check below - 1. Check active namenode[NN] logs [for time when it got reboot] 2. Check active NN zkfc logs [same time - if you see any issue] 3. Check for standby NN logs at same time if you see any error 4. Check for standby NN zkfc logs for any error at same timestamp 5. Check for Active NN .out file for any warnings/error 6. Check for system logs "/var/log/message" for any issue at particular moment of time. You will find error in one of the above file. accordingly you can go for RCA. Do revert if you need further help.
... View more
