I am working with Titan Server (using Cassandra) v0.3.1 on Windows 7 and seeing some inconsistent behavior around writes to the graph. For some reason, new nodes seem to "disappear" after committing a transaction. I'm thinking there is some sort of cache/delayed write involved, but am not sure what Titan is doing under the hood.
Do you have any ideas as to why nodes seem to disappear on commit?
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Here is a sequence of commands run in the Gremlin shell:
gremlin> g = TitanFactory.open("cassandra.local")
==>titangraph[cassandrathrift:127.0.0.1]
Shows the two nodes I have added to the graph so far:
gremlin> g.V
==>v[280096]
==>v[280100]
Now add a node:
gremlin> g.addVertex()
==>v[360004]
New node appears in graph:
gremlin> g.V
==>v[280096]
==>v[280100]
==>v[360004]
Now, commit transaction:
gremlin> g.commit()
==>null
...and the new node is gone:
gremlin> g.V
==>v[280096]
==>v[280100]
