Neo4j

Just few questions since I can not find any issue about them. The following is my query that can work in Neo4j server    CALL apoc.periodic.iterate("CALL apoc.load.csv('file:///import/data') YIELD map AS row  RETURN  row", 'CREATE (computer:Computer{...

I were trying to create index for node's property :      create index process_pid if not exists for (n:Process) on n.pid     It take about 10 minutes in 100 million nodes. However, in the case of 640 million nodes, it take 10 hours, what made so diff...

The following code   CALL apoc.periodic.iterate("MATCH(e:Process) MATCH (f:ParentProcess{pid:e.parentID})    RETURN  e,f", "CREATE(f)-[r:create_process_to]->(e)", {batchSize:5000, parallel: true}) YIELD batch   Showed the error message : The allocati...

The query is the following (there're 640 million process nodes)     CALL apoc.periodic.iterate("MATCH(e:Process) MATCH (f:Process{parentID:e.pid})    RETURN  e,f", "CREATE(e)-[r:create_process_to]->(f)", {batchSize:5000, parallel: true}) YIELD batch ...

There're two socket of cpu with each 8 core & 16 thread in my computer (i.e., total 2*8 core and 16*2 thread). When I was running  apoc.periodic.iterate with parallel = TRUE, for example,   CALL apoc.periodic.iterate( 'MATCH (n) RETURN id(n) AS id', ...