questions

# Tutorial
# https://docs.janusgraph.org/getting-started/basic-usage/#cohabitors-of-tartarus
gremlin> // pluto can't be his own cohabitant
gremlin> g.V(pluto).out('lives').in('lives').where(is(neq(pluto))).values('name')
==>cerberus

# My result
gremlin> g.V(pluto).out('lives').in('lives').where(is(neq(pluto))).values('name')
==>pluto

gremlin> g.V(pluto).as('x').out('lives').in('lives').where(neq('x')).values('name')
==>cerberus

var transaction = graph.buildTransaction().start(); // graph is a StandardJanusGraph
var g = transaction.traversal();
g.inject(1).addE(edgeLabel).from(V("ExistingVertexId")).to(V("MissingVertexId")).iterate();
transaction.commit();

gremlin> g.V("MissingVertexId").label()
==>vertex
gremlin> g.V("MissingVertexId").valueMap()
==>[]

Provided read marker is not compatible with existing read marker for previously registered readers

g.V().or(
  has('Name',textContainsPrefix("ProjectA")),
  has('Topic',textContainsPrefix("ProjectA"))
  has('Desc',textContainsPrefix("ProjectA"))
).order(score).by(name,topic,desc)

JanusGraphFactory.startTransactionRecovery(graph, Instant.ofEpochMilli(start_ms))

tx.log-tx = true
tx.max-commit-time = 10000
log.tx.ttl = 2d