Hey @jokk33, fix(allocator): bring in increased buffers for allocator from ristretto by NamanJain8 · Pull Request #7046 · dgraph-io/dgraph · GitHub should fix the issue.
See fix(allocator): increase number of buffers from 32 to 64 in allocator by NamanJain8 · Pull Request #234 · dgraph-io/ristretto · GitHub description as why it might have crashed even at around ~13GB of allocator size.
It would be best if it is possible for you to confirm that the issue is resolved.