Yes, SWAP is enabled.
Filename Type Size Used Priority
/dev/sdb partition 524284 223716 -2
We only have a single node setup (which is of 16GB RAM and 320GB Disk) and we are writing data into it using 500 dgraph connections at a time. Earlier, the alpha was getting killed by OOM error very frequently. So, I reduced the lru_mb to 2048 and used --badger param. Even then alpha got killed by OOM. After that, I tried to restart the alpha and encountered this error.