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OK, I repeated the experiment and got "0 1" again, so I expand on what I did.
I use the janusgraph-0.6.2 full binary distribution and start cassandra and elasticsearch with:
$ bin/janusgraph.sh start
I leave the running Janusgraph Server unused and start a JanusGraph instance in the gremlin console with:
graph = JanusGraphFactory.open('conf/janusgraph-cql-es.properties')
Note that your code lines show a private properties file.
Best wishes, Marc