我正在尝试使用批量导入模块将数据导入Neo4j 2.2.5，但速度非常慢。我做错了什么？
我有3个单独的CSV文件，这些文件是来自SQL数据库的转储。最大的有2M +行。这是我的导入脚本：
//Load the messages
create index on :Mail(id);
import-cypher -d"\t" -i file:c:/messagesheaders.csv -b 10000 -q with distinct {mid} as mid merge (e:Mail {id: {mid}, date: {date}, message_id: {message_id}});
//Load recipients
create index on :Person(Email);
import-cypher -d"\t" -i file:c:/recipientsheaders.csv -b 10000 -q create (e:Person {Email: {rvalue}});
//Load senders
create index on :Person(Email);
import-cypher -d"\t" -i file:c:/messagesheaders.csv -b 10000 -q with distinct {sender} as sender merge (e:Person {Email: {sender}});
//Relationships between senders and mails
import-cypher -d"\t" -i file:c:/messagesheaders.csv -b 10000 -q match (e:Person {Email: {sender}}), (c:Mail {id: {mid}}) create (e)-[:HAS_SENT]->(c);
//Relationships between recipients and mails
import-cypher -d"\t" -i file:c:/recipientsheaders.csv -b 10000 -q match (e:Person {Email: {rvalue}}), (d:Mail {id: {mid}}) create (e)-[:HAS_RECEIVED {rtype: {rtype}}]->(d);
我可以很好地导入节点但是1小时后Neo4j仍然停留在第一组关系上。我怎样才能加快速度？