CODEWITHSUNDEEP
neo4jcypher
GoofyJames
GoofyJames

Reputation: 47

Loading edges to neo4j taking too much time

Hi I am trying to load edge files to neo4j of approximately 80000 records each. I am using:

USING PERIODIC COMMIT 500 LOAD CSV WITH HEADERS FROM 
"file:///EdgesWriterSong_wrote.csv" AS csvLine
MATCH (writer:Writer { id: toInt(csvLine.WriterId),(songs:Songs { SongId: toInt(csvLine.SongId)
CREATE (writer)-[r:Wrote]->(songs)

It is taking way too much time to load. Is there a quicker way pls?

Upvotes: 0

Views: 48

Answers (1)

cybersam
cybersam

Reputation: 67044

Your query has syntax errors, but I will assume your actual code looks like this:

USING PERIODIC COMMIT 500 LOAD CSV WITH HEADERS FROM "file:///EdgesWriterSong_wrote.csv" AS csvLine
MATCH (writer:Writer { id: toInt(csvLine.WriterId) }),
  (songs:Songs { SongId: toInt(csvLine.SongId) })
CREATE (writer)-[r:Wrote]->(songs);

The most obvious reason for slowness for such a simple query would be that you have not yet created indexes for :Writer(id) and Songs(SongId). Do that by running these 2 queries (one at a time):

CREATE INDEX ON :Writer(id);

CREATE INDEX ON :Songs(SongId);

Upvotes: 1

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