我的图形大约有2700万个关系和1500万个节点。当我尝试使用使用neo4j导入工具创建的Graph.db数据库启动Neo4J实例时，我会收到以下错误：
sudo service neo4j status
● neo4j.service - Neo4j Graph Database
Loaded: loaded (/lib/systemd/system/neo4j.service; disabled; vendor preset: enabled)
Active: inactive (dead)
Mai 29 17:14:55 ammer-XPS-15-9550 neo4j[21230]: at
org.neo4j.kernel.internal.StoreLocker.checkLock(StoreLocker.java:75)
Mai 29 17:14:55 ammer-XPS-15-9550 neo4j[21230]: ... 13 more
Mai 29 17:14:55 ammer-XPS-15-9550 neo4j[21230]: 2017-05-29
15:14:55.089+0000 INFO Neo4j Server shutdown initiated by request
Mai 29 17:14:55 ammer-XPS-15-9550 systemd[1]: neo4j.service: Main
exited, code=exited, status=1/FAILURE
Mai 29 17:14:55 ammer-XPS-15-9550 systemd[1]: neo4j.service: Unit entered failed state.
Mai 29 17:14:55 ammer-XPS-15-9550 systemd[1]: neo4j.service: Failed with result 'exit-code'.
Mai 29 17:14:55 ammer-XPS-15-9550 systemd[1]: neo4j.service: Service hold-off time over, scheduling restart.
Mai 29 17:14:55 ammer-XPS-15-9550 systemd[1]: Stopped Neo4j Graph Database.
Mai 29 17:14:55 ammer-XPS-15-9550 systemd[1]: neo4j.service: Start request repeated too quickly.
Mai 29 17:14:55 ammer-XPS-15-9550 systemd[1]: Failed to start Neo4j Graph Database.
尝试在neo4j.conf中删除此行，因为我认为Neo4J-Import-Tool尚未升级为支持3.2.x版本。
# Enable this to be able to upgrade a store from an older version.
#dbms.allow_format_migration=true