About Dgraph live transport is closing

My 2¢: I’m running Dgraph a local cluster, controlled by a Nomad job (1 zero, 4 alpha, 1 ratel). None of the alphas is really big (7 GB, with lru_mb=2389) I’m trying to load the 21 million movie database:

% docker exec -ti alpha-a6172fdf-d72a-d8c9-d3f0-7b8951442caf dgraph live -r /tmp/21million.rdf.gz --zero 192.168.168.158:28084 -c 1
I0409 09:45:54.970927 299 init.go:88]

Dgraph version : v1.0.13
Commit SHA-1 : 691b3b35
Commit timestamp : 2019-03-09 19:33:59 -0800
Branch : HEAD
Go version : go1.11.5

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Licensed variously under the Apache Public License 2.0 and Dgraph Community License.
Copyright 2015-2018 Dgraph Labs, Inc.

Creating temp client directory at /tmp/x295687544
badger 2019/04/09 09:45:54 INFO: All 0 tables opened in 0s

Processing /tmp/21million.rdf.gz
[ 2s] Txns: 31 RDFs: 31000 RDFs/sec: 15499 Aborts: 0
[ 4s] Txns: 73 RDFs: 73000 RDFs/sec: 18249 Aborts: 0

[ 2m58s] Txns: 1381 RDFs: 1381000 RDFs/sec: 7758 Aborts: 0
[ 3m0s] Txns: 1390 RDFs: 1390000 RDFs/sec: 7722 Aborts: 0
[ 3m2s] Txns: 1392 RDFs: 1392000 RDFs/sec: 7648 Aborts: 7
[ 3m4s] Txns: 1392 RDFs: 1392000 RDFs/sec: 7565 Aborts: 18
[ 3m6s] Txns: 1392 RDFs: 1392000 RDFs/sec: 7484 Aborts: 31
[ 3m8s] Txns: 1392 RDFs: 1392000 RDFs/sec: 7404 Aborts: 40
[ 3m10s] Txns: 1392 RDFs: 1392000 RDFs/sec: 7326 Aborts: 50
[ 3m12s] Txns: 1403 RDFs: 1403000 RDFs/sec: 7307 Aborts: 53
[ 3m14s] Txns: 1405 RDFs: 1405000 RDFs/sec: 7242 Aborts: 53
[ 3m16s] Txns: 1414 RDFs: 1414000 RDFs/sec: 7214 Aborts: 53
[ 3m18s] Txns: 1425 RDFs: 1425000 RDFs/sec: 7197 Aborts: 53
[ 3m20s] Txns: 1434 RDFs: 1434000 RDFs/sec: 7170 Aborts: 53
[ 3m22s] Txns: 1444 RDFs: 1444000 RDFs/sec: 7149 Aborts: 53
[ 3m24s] Txns: 1453 RDFs: 1453000 RDFs/sec: 7123 Aborts: 53
[ 3m26s] Txns: 1462 RDFs: 1462000 RDFs/sec: 7097 Aborts: 53
[ 3m28s] Txns: 1472 RDFs: 1472000 RDFs/sec: 7077 Aborts: 53
[ 3m30s] Txns: 1482 RDFs: 1482000 RDFs/sec: 7057 Aborts: 53
[ 3m32s] Txns: 1491 RDFs: 1491000 RDFs/sec: 7033 Aborts: 53
2019/04/09 09:49:27 transport is closing
github.com/dgraph-io/dgraph/x.Fatalf
/ext-go/1/src/github.com/dgraph-io/dgraph/x/error.go:115
github.com/dgraph-io/dgraph/dgraph/cmd/live.handleError
/ext-go/1/src/github.com/dgraph-io/dgraph/dgraph/cmd/live/batch.go:132
github.com/dgraph-io/dgraph/dgraph/cmd/live.(*loader).request
/ext-go/1/src/github.com/dgraph-io/dgraph/dgraph/cmd/live/batch.go:174
github.com/dgraph-io/dgraph/dgraph/cmd/live.(*loader).makeRequests
/ext-go/1/src/github.com/dgraph-io/dgraph/dgraph/cmd/live/batch.go:186
runtime.goexit
/usr/local/go/src/runtime/asm_amd64.s:1333

The end result is the same as @Valdanito 's but I don’t see any sign of the load-balancer having interrupted the connection (local cluster, very responsive, logs say nothing about it).

Any hints into what I should be looking for? Thanks in advance.

Update: I’ve just noticed that no nodes were inserted, and that the schema I provided just before attempting the import (21million.schema) has vanished as well.