create_relationship causes batch to fail (returns nil)

[beverlycodes]

I'm unable to create relationships in a batch. The moment I add a :create_relationship call to a batch, @neo.batch returns nil and nothing is created in my graph.

The following fails:

[:create_unique_node, "person", "ssn", "000-00-0001", {:first_name=>"Jane", :last_name=>"Doe", :ssn=>"000-00-0001", :_type=>"Person", :created_at=>1335269478}],
[:add_node_to_index, "person_ssn", "ssn", "000-00-0001", "{0}"],
[:create_node, {:street1=>"94437 Kemmer Crossing", :street2=>"Apt. 333", :city=>"Abshireton", :state=>"AA", :zip=>"65820", :_type=>"Address", :created_at=>1335269478}],
[:create_relationship, "has", "{0}", "{2}", {}]

However, the nodes get created (without the relationship) if I just run:

[:create_unique_node, "person", "ssn", "000-00-0001", {:first_name=>"Jane", :last_name=>"Doe", :ssn=>"000-00-0001", :_type=>"Person", :created_at=>1335269478}],
[:add_node_to_index, "person_ssn", "ssn", "000-00-0001", "{0}"],
[:create_node, {:street1=>"94437 Kemmer Crossing", :street2=>"Apt. 333", :city=>"Abshireton", :state=>"AA", :zip=>"65820", :_type=>"Address", :created_at=>1335269478}]

I've tried [:create_relationship, "has", "{0}", "{2}"] instead with the same failing result. Since there is no error raised when my batch fails, I've been unable to track down exactly what is going wrong.

[maxdemarzi]

This may be a Neo4j problem.

I tried it both ways on version 1.7 (create unique node first, or create regular node first) all fails.
Tried it on 1.8, creating a regular node first works, but then the relationship is pointing the wrong way. If I try reversing the numbers {2} {0} I get an error.

I think => https://github.com/neo4j/community/issues/302 is part of the problem.

[maxdemarzi]

I went ahead and opened a new ticket. https://github.com/neo4j/community/issues/465
It seems to work the first time, and fail everytime afterwards.