Github user spmallette commented on the issue:
https://github.com/apache/tinkerpop/pull/922
It works with Java and GraphSON 2.0:
```text
gremlin> cluster = Cluster.build().serializer("GRAPHSON_V2D0").create()
==>localhost/127.0.0.1:8182
gremlin> client = cluster.connect()
==>org.apache.tinkerpop.gremlin.driver.Client$ClusteredClient@24a298a6
gremlin> client.submit("g.addV().property(c,k,v)",
[c:set,k:'name',v:123]).all().get()
==>result{object=v[4]
class=org.apache.tinkerpop.gremlin.structure.util.detached.DetachedVertex}
gremlin> client.submit("g.V().has('name',123).count()").all().get()
==>result{object=1 class=java.lang.Long}
```
So, i'm not sure what's wrong. If you want to commit/push what you have i
can try to test on my own to see what I (or maybe someone else) can figure out.
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