Remove nodes/relationships from Neo4j Cluster

[Tiago Sequeira]

I am using the 1.9 M03 version of Neo4j and the neo4j.rb gem for jruby and I have Neo4j HA mode active with 3 machines configured: Instance 1 is responsible to create nodes/relationships through neo4j.rb gem for jruby load.rb machine_id = 1 Neo4j.config['enable_ha'] = true Neo4j.config['ha.server_id'] = machine_id Neo4j.config['ha.server'] = "localhost:600#{machine_id}" Neo4j.config['ha.pull_interval'] = '50ms' Neo4j.config['ha.discovery.enabled'] = false other_machines = [1,2,3].map{|id| "localhost:500#{id}"}.join(',') puts "ha.initial_hosts: #{other_machines}" Neo4j.config['ha.initial_hosts'] = other_machines Neo4j.config['ha.cluster_server'] = "localhost:500#{machine_id}" Neo4j.config[:storage_path] = "db/neo#{machine_id}" Neo4j.config['keep_logical_logs'] = true Neo4j::Transaction.run do #create nodes and relationships end Instance 2 is the web server, basically would be the front-end for Neo4j data. neo4j-server.properties org.neo4j.server.database.location=data/graph.db org.neo4j.server.webserver.address=127.0.0.1 org.neo4j.server.webserver.port=7474 org.neo4j.server.webserver.https.enabled=true org.neo4j.server.webserver.https.port=7473 org.neo4j.server.database.mode=HA neo4j.properties keep_logical_logs=true online_backup_enabled=true online_backup_port=6362 ha.server_id=2 ha.initial_hosts=localhost:5001,localhost:5002,localhost:5003 ha.server=localhost:6002 ha.cluster_server=:5002 ha.pull_interval=1 Instance 3 is responsible for nodes/relationships deletion through neo4j.rb gem for jruby. remove.rb machine_id = 3 Neo4j.config['enable_ha'] = true Neo4j.config['ha.server_id'] = machine_id Neo4j.config['ha.server'] = "localhost:600#{machine_id}" Neo4j.config['ha.pull_interval'] = '50ms' Neo4j.config['ha.discovery.enabled'] = false other_machines = [1,2,3].map{|id| "localhost:500#{id}"}.join(',') puts "ha.initial_hosts: #{other_machines}" Neo4j.config['ha.initial_hosts'] = other_machines Neo4j.config['ha.cluster_server'] = "localhost:500#{machine_id}" Neo4j.config[:storage_path] = "db/neo#{machine_id}" Neo4j.config['keep_logical_logs'] = true Neo4j::Transaction.run do Neo4j._query("START n = node(*) MATCH n-[r?]->() WHERE id(n) <> 0 DELETE n,r") end   The load process (nodes/relationships creation) seems fine but the big problem is that I am not able to remove the nodes and relations with the script remove.rb (but cypher query runs OK in Neo4j WebAdmin). It also seems that data synchronization is not being done well among the various local cluster machines, what am I doing wrong? Am I doing something wrong in the cluster configuration?

[Tiago Sequeira]

Hi guys, someone to give some hint about that?

Thanks in advance.

[Peter Neubauer]

Not totally sure but are you able to insert data so it is visible on all 3 instances? It might be that there are actually 2 clusters established?

Do you have the logs? Also, could you please upgrade to 1.9 GA?

/peter

Sent from mobile device.

On Jun 7, 2013 12:03 AM, "Tiago Sequeira" <tiagomanu...@gmail.com> wrote:

Hi guys, someone to give some hint about that?

Thanks in advance.

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